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Ibarra Vilar P, Jani JC, Cannie MM, Shelmerdine SC, Lecomte S, Verhoye M, Hutchinson CJ, Arthurs OJ, Carlin A, Kang X. Postmortem imaging of fetuses at early gestations: A comparison of microfocus computed tomography with postmortem magnetic resonance at 9.4 T and postmortem ultrasound. Prenat Diagn 2024; 44:572-579. [PMID: 38367004 DOI: 10.1002/pd.6532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 11/27/2023] [Accepted: 01/30/2024] [Indexed: 02/19/2024]
Abstract
OBJECTIVE To compare the diagnostic performance of postmortem ultrasound (PMUS), 9.4 T magnetic resonance imaging (MRI) and microfocus computed tomography (micro-CT) for the examination of early gestation fetuses. METHOD Eight unselected fetuses (10-15 weeks gestational age) underwent at least 2 of the 3 listed imaging examinations. Six fetuses underwent 9.4 T MRI, four underwent micro-CT and six underwent PMUS. All operators were blinded to clinical history. All imaging was reported according to a prespecified template assessing 36 anatomical structures, later grouped into five regions: brain, thorax, heart, abdomen and genito-urinary. RESULTS More anatomical structures were seen on 9.4 T MRI and micro-CT than with PMUS, with a combined frequency of identified structures of 91.9% and 69.7% versus 54.5% and 59.6 (p < 0.001; p < 0.05) respectively according to comparison groups. In comparison with 9.4 T MRI, more structures were seen on micro-CT (90.2% vs. 83.3%, p < 0.05). Anatomical structures were described as abnormal on PMUS in 2.7%, 9.4 T MRI in 6.1% and micro-CT 7.7% of all structures observed. However, the accuracy test could not be calculated because conventional autopsy was performed on 6 fetuses of that only one structure was abnormal. CONCLUSION Micro-CT appears to offer the greatest potential as an imaging adjunct or non-invasive alternative for conventional autopsies in early gestation fetuses.
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Affiliation(s)
- Patricia Ibarra Vilar
- Department of Obstetrics and Gynecology, University Hospital Brugmann, Université Libre de Bruxelles, Brussels, Belgium
| | - Jacques C Jani
- Department of Obstetrics and Gynecology, University Hospital Brugmann, Université Libre de Bruxelles, Brussels, Belgium
| | - Mieke M Cannie
- Department of Radiology, University Hospital Brugmann, Université Libre de Bruxelles, Brussels, Belgium
| | | | - Sophie Lecomte
- Department of Pathology, University Hospital Brugmann, Université Libre de Bruxelles, Brussels, Belgium
| | | | - Ciaran J Hutchinson
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
- NIHR Great Ormond Street Hospital Biomedical Research Centre, London, UK
| | - Owen J Arthurs
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
- NIHR Great Ormond Street Hospital Biomedical Research Centre, London, UK
| | - Andrew Carlin
- Department of Obstetrics and Gynecology, University Hospital Brugmann, Université Libre de Bruxelles, Brussels, Belgium
| | - Xin Kang
- Department of Obstetrics and Gynecology, University Hospital Brugmann, Université Libre de Bruxelles, Brussels, Belgium
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Lane AM, Christie J, Arthurs OJ, Goergen SK. In-utero post-mortem MRI, opportunistic imaging with diagnostic yield. Prenat Diagn 2024. [PMID: 38686965 DOI: 10.1002/pd.6582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Accepted: 04/17/2024] [Indexed: 05/02/2024]
Abstract
Key pointsWhat's already known about this topic?
The role of post‐mortem extra‐uterine MRI as part of a minimally invasive autopsy has been established.
Antenatal in‐utero MRI during life has shown similar diagnostic accuracy to post‐mortem extra‐uterine MRI
Post mortem in utero MRI prior to delivery has not yet been documented or fully evaluated.
What does this study add?
We illustrate the feasibility and potential diagnostic value of post‐mortem intrauterine MRI
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Affiliation(s)
- Annah M Lane
- Department of Medical Imaging, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
- Queensland Xray, Mater Adult Hospital, Brisbane, Queensland, Australia
| | - James Christie
- Department of Radiology, Children's Hospital Westmead, Sydney, New South Wales, Australia
| | - Owen J Arthurs
- Department of Radiology, Great Ormond Street Hospital for Children, NHS Foundation Trust, London, UK
- UCL Great Ormond Street Institute of Child Health, London, UK
| | - Stacy K Goergen
- Monash Imaging, Clayton, Victoria, Australia
- School of Clinical Sciences, Monash University, Clayton, Victoria, Australia
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Shelmerdine SC, Davendralingam N, Langan D, Palm L, Mangham C, Arthurs OJ. Post-mortem skeletal survey (PMSS) versus post-mortem computed tomography (PMCT) for the detection of corner metaphyseal lesions (CML) in children. Eur Radiol 2024:10.1007/s00330-024-10679-7. [PMID: 38459348 DOI: 10.1007/s00330-024-10679-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 02/02/2024] [Accepted: 02/13/2024] [Indexed: 03/10/2024]
Abstract
OBJECTIVES Corner metaphyseal lesions (CMLs) are specific for child abuse but challenging to detect on radiographs. The accuracy of CT for CML detection is unknown. Our aim was to compare diagnostic accuracy for CML detection on post-mortem skeletal surveys (PMSS, plain radiography) versus post-mortem CT (PMCT). METHODS A 10-year retrospective review was performed at a children's hospital for patients having PMSS, PMCT and histopathological correlation (reference standard) for suspected CMLs. Twenty-four radiologists independently reported the presence or absence of CMLs in all cases in a blinded randomised cross-over design across two rounds. Logistic regression models were used to compare accuracy between modalities. RESULTS Twenty CMLs were reviewed for each of the 10 subjects (200 metaphyses in all). Among them, 20 CMLs were confirmed by bone histopathology. Sensitivity for these CMLs was significantly higher for PMSS (69.6%, 95% CI 61.7 to 76.7) than PMCT (60.5%, 95% CI 51.9 to 68.6). Using PMSS for detection of CMLs would yield one extra correct diagnosis for every 11.1 (95% CI 6.6 to 37.0) fractured bones. In contrast, specificity was higher on PMCT (92.7%, 95% CI 90.3 to 94.5) than PMSS (90.5%, 95% CI 87.6 to 92.8) with an absolute difference of 2.2% (95% CI 1.0 to 3.4, p < 0.001). More fractures were reported collectively by readers on PMSS (785) than on PMCT (640). CONCLUSION PMSS remains preferable to PMCT for CML evaluation. Any investigation of suspected abuse or unexplained deaths should include radiographs of the limbs to exclude CMLs. CLINICAL RELEVANCE STATEMENT In order to avoid missing evidence that could indicate child abuse as a contributory cause for death in children, radiographs of the limbs should be performed to exclude CMLs, even if a PMCT is being acquired. KEY POINTS • Corner metaphyseal lesions (CMLs) are indicative for abuse, but challenging to detect. Skeletal surveys (i.e. radiographs) are standard practice; however, accuracy of CT is unknown. • Sensitivity for CML detection on radiographs is significantly higher than CT. • Investigation of unexplained paediatric deaths should include radiographs to exclude CMLs even if CT is also being performed.
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Affiliation(s)
- Susan Cheng Shelmerdine
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London, WC1H 3JH, UK.
- UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, WC1N 1EH, UK.
- NIHR Great Ormond Street Hospital Biomedical Research Centre, 30 Guilford Street, Bloomsbury, London, WC1N 1EH, UK.
- Department of Clinical Radiology, St George's Hospital, London, UK.
| | - Natasha Davendralingam
- Department of Clinical Radiology, Bedfordshire Hospitals NHS Foundation Trust, Bedford, UK
| | - Dean Langan
- UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, WC1N 1EH, UK
| | - Liina Palm
- Department of Histopathology, Great Ormond Street Hospital for Children, London, WC1H 3JH, UK
| | - Chas Mangham
- University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Owen J Arthurs
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London, WC1H 3JH, UK
- UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, WC1N 1EH, UK
- NIHR Great Ormond Street Hospital Biomedical Research Centre, 30 Guilford Street, Bloomsbury, London, WC1N 1EH, UK
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Pauling C, Kanber B, Arthurs OJ, Shelmerdine SC. Commercially available artificial intelligence tools for fracture detection: the evidence. BJR Open 2024; 6:tzad005. [PMID: 38352182 PMCID: PMC10860511 DOI: 10.1093/bjro/tzad005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 09/20/2023] [Accepted: 09/30/2023] [Indexed: 02/16/2024] Open
Abstract
Missed fractures are a costly healthcare issue, not only negatively impacting patient lives, leading to potential long-term disability and time off work, but also responsible for high medicolegal disbursements that could otherwise be used to improve other healthcare services. When fractures are overlooked in children, they are particularly concerning as opportunities for safeguarding may be missed. Assistance from artificial intelligence (AI) in interpreting medical images may offer a possible solution for improving patient care, and several commercial AI tools are now available for radiology workflow implementation. However, information regarding their development, evidence for performance and validation as well as the intended target population is not always clear, but vital when evaluating a potential AI solution for implementation. In this article, we review the range of available products utilizing AI for fracture detection (in both adults and children) and summarize the evidence, or lack thereof, behind their performance. This will allow others to make better informed decisions when deciding which product to procure for their specific clinical requirements.
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Affiliation(s)
- Cato Pauling
- UCL Great Ormond Street Institute of Child Health, University College London, London WC1E 6BT, United Kingdom
| | - Baris Kanber
- Queen Square Multiple Sclerosis Centre, Department of Neuroinflammation, University College London (UCL) Queen Square Institute of Neurology, Faculty of Brain Sciences, University College London, London WC1N 3BG, United Kingdom
- Department of Medical Physics and Biomedical Engineering, Centre for Medical Image Computing, University College London, London WC1E 6BT, United Kingdom
| | - Owen J Arthurs
- UCL Great Ormond Street Institute of Child Health, University College London, London WC1E 6BT, United Kingdom
- Department of Clinical Radiology, Great Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, United Kingdom
- NIHR Great Ormond Street Hospital Biomedical Research Centre, Bloomsbury, London WC1N 1EH, United Kingdom
| | - Susan C Shelmerdine
- UCL Great Ormond Street Institute of Child Health, University College London, London WC1E 6BT, United Kingdom
- Department of Clinical Radiology, Great Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, United Kingdom
- NIHR Great Ormond Street Hospital Biomedical Research Centre, Bloomsbury, London WC1N 1EH, United Kingdom
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Simcock IC, Shelmerdine SC, Hutchinson JC, Sebire NJ, Arthurs OJ. Body weight-based iodinated contrast immersion timing for human fetal postmortem microfocus computed tomography. BJR Open 2024; 6:tzad006. [PMID: 38352185 PMCID: PMC10860501 DOI: 10.1093/bjro/tzad006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 06/27/2023] [Accepted: 10/13/2023] [Indexed: 02/16/2024] Open
Abstract
Objectives The aim of this study was to evaluate the length of time required to achieve full iodination using potassium tri-iodide as a contrast agent, prior to human fetal postmortem microfocus computed tomography (micro-CT) imaging. Methods Prospective assessment of optimal contrast iodination was conducted across 157 human fetuses (postmortem weight range 2-298 g; gestational age range 12-37 weeks), following micro-CT imaging. Simple linear regression was conducted to analyse which fetal demographic factors could produce the most accurate estimate for optimal iodination time. Results Postmortem body weight (r2 = 0.6435) was better correlated with iodination time than gestational age (r2 = 0.1384), producing a line of best fit, y = [0.0304 × body weight (g)] - 2.2103. This can be simplified for clinical use whereby immersion time (days) = [0.03 × body weight (g)] - 2.2. Using this formula, for example, a 100-g fetus would take 5.2 days to reach optimal contrast enhancement. Conclusions The simplified equation can now be used to provide estimation times for fetal contrast preparation time prior to micro-CT imaging and can be used to manage service throughput and parental expectation for return of their fetus. Advances in knowledge A simple equation from empirical data can now be used to estimate preparation time for human fetal postmortem micro-CT imaging.
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Affiliation(s)
- Ian C Simcock
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London WC1N 3JH, United Kingdom
- UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London WC1N 1EH, United Kingdom
- NIHR Great Ormond Street Hospital Biomedical Research Centre, London WC1N 1EH, United Kingdom
| | - Susan C Shelmerdine
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London WC1N 3JH, United Kingdom
- UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London WC1N 1EH, United Kingdom
- NIHR Great Ormond Street Hospital Biomedical Research Centre, London WC1N 1EH, United Kingdom
| | - John Ciaran Hutchinson
- NIHR Great Ormond Street Hospital Biomedical Research Centre, London WC1N 1EH, United Kingdom
- Department of Histopathology, Great Ormond Street Hospital for Children, London WC1N 3JH, United Kingdom
| | - Neil J Sebire
- UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London WC1N 1EH, United Kingdom
- NIHR Great Ormond Street Hospital Biomedical Research Centre, London WC1N 1EH, United Kingdom
- Department of Histopathology, Great Ormond Street Hospital for Children, London WC1N 3JH, United Kingdom
| | - Owen J Arthurs
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London WC1N 3JH, United Kingdom
- UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London WC1N 1EH, United Kingdom
- NIHR Great Ormond Street Hospital Biomedical Research Centre, London WC1N 1EH, United Kingdom
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Wright J, Cheung M, Siddiqui A, Lucas J, Calder A, Argyropoulou MI, Arthurs OJ, Caro-Dominguez P, Thompson D, Severino M, D'Arco F. Recommendations for neuroradiological examinations in children living with achondroplasia: a European Society of Pediatric Radiology and European Society of Neuroradiology opinion paper. Pediatr Radiol 2023; 53:2323-2344. [PMID: 37674051 DOI: 10.1007/s00247-023-05728-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/18/2023] [Accepted: 07/19/2023] [Indexed: 09/08/2023]
Abstract
Children living with achondroplasia are at an increased risk of developing neurological complications, which may be associated with acute and life-altering events. To remediate this risk, the timely acquisition of effective neuroimaging that can help to guide clinical management is essential. We propose imaging protocols and follow-up strategies for evaluating the neuroanatomy of these children and to effectively identify potential neurological complications, including compression at the cervicomedullary junction secondary to foramen magnum stenosis, spinal deformity and spinal canal stenosis. When compiling these recommendations, emphasis has been placed on reducing scan times and avoiding unnecessary radiation exposure. Standardized imaging protocols are important to ensure that clinically useful neuroimaging is performed in children living with achondroplasia and to ensure reproducibility in future clinical trials. The members of the European Society of Pediatric Radiology (ESPR) Neuroradiology Taskforce and European Society of Neuroradiology pediatric subcommittee, together with clinicians and surgeons with specific expertise in achondroplasia, wrote this opinion paper. The research committee of the ESPR also endorsed the final draft. The rationale for these recommendations is based on currently available literature, supplemented by best practice opinion from radiologists and clinicians with subject-specific expertise.
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Affiliation(s)
- Jenny Wright
- Department of Radiology, Manchester University NHS Foundation Trust, Oxford Road, Manchester, M13 9WL, UK.
| | - Moira Cheung
- Department of Paediatric Endocrinology, Great Ormond Street Hospital for Children NHS Foundation Trust, Great Ormond Street, London, UK
| | - Ata Siddiqui
- Department of Neuroradiology, Guy's and Saint Thomas' NHS Foundation Trust, London, UK
| | - Jonathan Lucas
- Paediatric Spinal Surgery, Evelina London Children's Hospital, London, UK
| | - Alistair Calder
- Department of Radiology, Great Ormond Street Hospital for Children, NHS Foundation Trust, London, UK
- NIHR Great Ormond Street Hospital Biomedical Research Centre, London, UK
| | - Maria I Argyropoulou
- Department of Clinical Radiology and Imaging, Medical School, University of Ioannina, Ioannina, Greece
| | - Owen J Arthurs
- Department of Radiology, Great Ormond Street Hospital for Children, NHS Foundation Trust, London, UK
- NIHR Great Ormond Street Hospital Biomedical Research Centre, London, UK
| | - Pablo Caro-Dominguez
- Unidad de Radiologia Pediatrica, Servicio de Radiologia, Hospital Universitario Virgen del Rocio, Seville, Spain
| | - Dominic Thompson
- Department of Paediatric Neurosurgery, Great Ormond Street Hospital for Children NHS Foundation Trust, Great Ormond Street, London, UK
- NIHR Great Ormond Street Hospital Biomedical Research Centre, London, UK
| | | | - Felice D'Arco
- Department of Neuroradiology, Guy's and Saint Thomas' NHS Foundation Trust, London, UK
- Department of Radiology, Great Ormond Street Hospital for Children, NHS Foundation Trust, London, UK
- NIHR Great Ormond Street Hospital Biomedical Research Centre, London, UK
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Sadeghian SM, Arthurs OJ, Li X, Lewis CL, Shefelbine SJ. Neonatal Hip Loading in Developmental Dysplasia: Finite Element Simulation of Proximal Femur Growth and Treatment. HSS J 2023; 19:418-427. [PMID: 37937091 PMCID: PMC10626923 DOI: 10.1177/15563316231193426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Accepted: 06/16/2023] [Indexed: 11/09/2023]
Abstract
Background Abnormal prenatal hip joint loading can lead to compromised hip joint function. Early intervention is crucial for favorable outcomes. Purpose This study investigates the impact of treatment timing (initiation and duration) on cartilage growth and ossification in the proximal femur of infants with developmental dysplasia of the hip, a condition affecting newborns. Methods We used a mechanobiological model to simulate proximal femur growth during treatment durations of 3 months, 6 months, and a late-start treatment. Results The findings indicate that the timing of treatment initiation is crucial, while a longer treatment duration does not contribute to improved morphological development of the hip joint. Conclusions Mechanobiological models of growth can be used to develop treatments and therapies that correct loading conditions. Growing bone is particularly sensitive to loading conditions, and altered loading during growth can affect bone shape and functionality.
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Affiliation(s)
- S Mahsa Sadeghian
- Department of Mechanical and Industrial Engineering, Northeastern University, Boston, MA, USA
| | - Owen J Arthurs
- Department of Radiology, Great Ormond Street Hospital, London, UK
| | - Xinshan Li
- Department of Mechanical Engineering, Insigneo Institute for in silico Medicine, University of Sheffield, Sheffield, UK
| | - Cara L Lewis
- Department of Physical Therapy, College of Health & Rehabilitation Sciences: Sargent College, Boston University, Boston, MA, USA
| | - Sandra J Shefelbine
- Department of Mechanical and Industrial Engineering, Northeastern University, Boston, MA, USA
- Department of Bioengineering, Northeastern University, Boston, MA, USA
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Abstract
Post-mortem computed tomography (PMCT) imaging is gaining popularity and acceptance for use alongside forensic autopsies of children, predominantly to aid in the detection of traumatic injuries. Recent research on this topic has provided a breadth of new information regarding the appropriate usage, imaging guidance, and diagnostic accuracy for the identification of different paediatric pathologies. Additionally, advanced CT imaging techniques, such as PMCT angiography or ventilated PMCT, have been trialled, and post-mortem micro-CT is now being used in specialist centres for the assessment of subtle fractures in extracted bone specimens. Various image post-processing methods (e.g., three-dimensional printing from PMCT imaging data) are being used for the illustration of injuries in the medicolegal setting to a lay audience and provide another avenue for the future of forensic radiology research. In this review, the evidence-based principles and benefits of post-mortem imaging for forensic investigation in childhood deaths are presented, with a particular focus on PMCT and current practices. Variations in forensic imaging strategies around the world, published diagnostic accuracy rates, and expected normal post-mortem imaging findings are discussed, as well as potential future applications and research in this area.
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Affiliation(s)
- H Edwards
- Alder Hey Children's NHS Foundation Trust, Liverpool L12 2AP, UK
| | - S C Shelmerdine
- Great Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UK; UCL Great Ormond Street Institute of Child Health, London, UK; NIHR Great Ormond Street Hospital Biomedical Research Centre, UK
| | - O J Arthurs
- Great Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UK; UCL Great Ormond Street Institute of Child Health, London, UK; NIHR Great Ormond Street Hospital Biomedical Research Centre, UK.
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Tommasini F, Benoist T, Shibuya S, Woodall MNJ, Naldi E, Palor M, Orr JC, Giobbe GG, Maughan EF, Saleh T, Gjinovci A, Hutchinson JC, Arthurs OJ, Janes SM, Elvassore N, Hynds RE, Smith CM, Michielin F, Pellegata AF, De Coppi P. Lung viral infection modelling in a bioengineered whole-organ. Biomaterials 2023; 301:122203. [PMID: 37515903 PMCID: PMC10281738 DOI: 10.1016/j.biomaterials.2023.122203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 06/05/2023] [Accepted: 06/09/2023] [Indexed: 07/31/2023]
Abstract
Lung infections are one of the leading causes of death worldwide, and this situation has been exacerbated by the emergence of COVID-19. Pre-clinical modelling of viral infections has relied on cell cultures that lack 3D structure and the context of lung extracellular matrices. Here, we propose a bioreactor-based, whole-organ lung model of viral infection. The bioreactor takes advantage of an automated system to achieve efficient decellularization of a whole rat lung, and recellularization of the scaffold using primary human bronchial cells. Automatization allowed for the dynamic culture of airway epithelial cells in a breathing-mimicking setup that led to an even distribution of lung epithelial cells throughout the distal regions. In the sealed bioreactor system, we demonstrate proof-of-concept for viral infection within the epithelialized lung by infecting primary human airway epithelial cells and subsequently injecting neutrophils. Moreover, to assess the possibility of drug screening in this model, we demonstrate the efficacy of the broad-spectrum antiviral remdesivir. This whole-organ scale lung infection model represents a step towards modelling viral infection of human cells in a 3D context, providing a powerful tool to investigate the mechanisms of the early stages of pathogenic infections and the development of effective treatment strategies for respiratory diseases.
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Affiliation(s)
- Fabio Tommasini
- Stem Cells and Regenerative Medicine Section, Developmental Biology and Cancer Department, UCL Great Ormond Street Institute of Child Health, University College London, London, UK
| | - Thomas Benoist
- Stem Cells and Regenerative Medicine Section, Developmental Biology and Cancer Department, UCL Great Ormond Street Institute of Child Health, University College London, London, UK; NIHR Great Ormond Street Biomedical Research Centre, London, UK
| | - Soichi Shibuya
- Stem Cells and Regenerative Medicine Section, Developmental Biology and Cancer Department, UCL Great Ormond Street Institute of Child Health, University College London, London, UK
| | - Maximillian N J Woodall
- Infection, Immunity and Inflammation Section, UCL Great Ormond Street Institute of Child Health, University College London, London, UK
| | - Eleonora Naldi
- Stem Cells and Regenerative Medicine Section, Developmental Biology and Cancer Department, UCL Great Ormond Street Institute of Child Health, University College London, London, UK
| | - Machaela Palor
- Infection, Immunity and Inflammation Section, UCL Great Ormond Street Institute of Child Health, University College London, London, UK
| | - Jessica C Orr
- Lungs for Living Research Centre, UCL Respiratory, Division of Medicine, University College London, London, UK
| | - Giovanni Giuseppe Giobbe
- Stem Cells and Regenerative Medicine Section, Developmental Biology and Cancer Department, UCL Great Ormond Street Institute of Child Health, University College London, London, UK; NIHR Great Ormond Street Biomedical Research Centre, London, UK
| | - Elizabeth F Maughan
- Epithelial Cell Biology in ENT Research (EpiCENTR) Group, Developmental Biology and Cancer Department, UCL Great Ormond Street Institute of Child Health, University College London, London, UK
| | - Tarek Saleh
- Stem Cells and Regenerative Medicine Section, Developmental Biology and Cancer Department, UCL Great Ormond Street Institute of Child Health, University College London, London, UK
| | - Asllan Gjinovci
- Stem Cells and Regenerative Medicine Section, Developmental Biology and Cancer Department, UCL Great Ormond Street Institute of Child Health, University College London, London, UK
| | - J Ciaran Hutchinson
- Lungs for Living Research Centre, UCL Respiratory, Division of Medicine, University College London, London, UK
| | - Owen J Arthurs
- Stem Cells and Regenerative Medicine Section, Developmental Biology and Cancer Department, UCL Great Ormond Street Institute of Child Health, University College London, London, UK; Great Ormond Street Hospital (GOSH), London, UK; NIHR Great Ormond Street Biomedical Research Centre, London, UK
| | - Sam M Janes
- Lungs for Living Research Centre, UCL Respiratory, Division of Medicine, University College London, London, UK
| | - Nicola Elvassore
- Stem Cells and Regenerative Medicine Section, Developmental Biology and Cancer Department, UCL Great Ormond Street Institute of Child Health, University College London, London, UK
| | - Robert E Hynds
- Epithelial Cell Biology in ENT Research (EpiCENTR) Group, Developmental Biology and Cancer Department, UCL Great Ormond Street Institute of Child Health, University College London, London, UK
| | - Claire M Smith
- Infection, Immunity and Inflammation Section, UCL Great Ormond Street Institute of Child Health, University College London, London, UK
| | - Federica Michielin
- Stem Cells and Regenerative Medicine Section, Developmental Biology and Cancer Department, UCL Great Ormond Street Institute of Child Health, University College London, London, UK.
| | - Alessandro Filippo Pellegata
- Stem Cells and Regenerative Medicine Section, Developmental Biology and Cancer Department, UCL Great Ormond Street Institute of Child Health, University College London, London, UK.
| | - Paolo De Coppi
- Stem Cells and Regenerative Medicine Section, Developmental Biology and Cancer Department, UCL Great Ormond Street Institute of Child Health, University College London, London, UK; Great Ormond Street Hospital (GOSH), London, UK; NIHR Great Ormond Street Biomedical Research Centre, London, UK.
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del Valle I, Young MD, Kildisiute G, Ogunbiyi OK, Buonocore F, Simcock IC, Khabirova E, Crespo B, Moreno N, Brooks T, Niola P, Swarbrick K, Suntharalingham JP, McGlacken-Byrne SM, Arthurs OJ, Behjati S, Achermann JC. An integrated single-cell analysis of human adrenal cortex development. JCI Insight 2023; 8:e168177. [PMID: 37440461 PMCID: PMC10443814 DOI: 10.1172/jci.insight.168177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 05/31/2023] [Indexed: 07/15/2023] Open
Abstract
The adrenal glands synthesize and release essential steroid hormones such as cortisol and aldosterone, but many aspects of human adrenal gland development are not well understood. Here, we combined single-cell and bulk RNA sequencing, spatial transcriptomics, IHC, and micro-focus computed tomography to investigate key aspects of adrenal development in the first 20 weeks of gestation. We demonstrate rapid adrenal growth and vascularization, with more cell division in the outer definitive zone (DZ). Steroidogenic pathways favored androgen synthesis in the central fetal zone, but DZ capacity to synthesize cortisol and aldosterone developed with time. Core transcriptional regulators were identified, with localized expression of HOPX (also known as Hop homeobox/homeobox-only protein) in the DZ. Potential ligand-receptor interactions between mesenchyme and adrenal cortex were seen (e.g., RSPO3/LGR4). Growth-promoting imprinted genes were enriched in the developing cortex (e.g., IGF2, PEG3). These findings reveal aspects of human adrenal development and have clinical implications for understanding primary adrenal insufficiency and related postnatal adrenal disorders, such as adrenal tumor development, steroid disorders, and neonatal stress.
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Affiliation(s)
- Ignacio del Valle
- Genetics and Genomic Medicine Research and Teaching Department, University College London (UCL) Great Ormond Street Institute of Child Health, UCL, London, United Kingdom
| | - Matthew D. Young
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, United Kingdom
| | - Gerda Kildisiute
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, United Kingdom
| | - Olumide K. Ogunbiyi
- Department of Histopathology, Great Ormond Street Hospital for Children National Health Service (NHS) Foundation Trust, London, United Kingdom
- Developmental Biology and Cancer Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, UCL, London, United Kingdom
| | - Federica Buonocore
- Genetics and Genomic Medicine Research and Teaching Department, University College London (UCL) Great Ormond Street Institute of Child Health, UCL, London, United Kingdom
| | - Ian C. Simcock
- Department of Clinical Radiology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom
- National Institute of Health Research (NIHR) Great Ormond Street Biomedical Research Centre, London, United Kingdom
- Population, Policy and Practice Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, UCL, London, United Kingdom
| | - Eleonora Khabirova
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, United Kingdom
| | - Berta Crespo
- Developmental Biology and Cancer Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, UCL, London, United Kingdom
| | - Nadjeda Moreno
- Developmental Biology and Cancer Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, UCL, London, United Kingdom
| | - Tony Brooks
- UCL Genomics, Zayed Centre for Research, UCL Great Ormond Street Institute of Child Health, UCL, London, United Kingdom
| | - Paola Niola
- UCL Genomics, Zayed Centre for Research, UCL Great Ormond Street Institute of Child Health, UCL, London, United Kingdom
| | - Katherine Swarbrick
- Department of Histopathology, Great Ormond Street Hospital for Children National Health Service (NHS) Foundation Trust, London, United Kingdom
- Developmental Biology and Cancer Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, UCL, London, United Kingdom
| | - Jenifer P. Suntharalingham
- Genetics and Genomic Medicine Research and Teaching Department, University College London (UCL) Great Ormond Street Institute of Child Health, UCL, London, United Kingdom
| | - Sinead M. McGlacken-Byrne
- Genetics and Genomic Medicine Research and Teaching Department, University College London (UCL) Great Ormond Street Institute of Child Health, UCL, London, United Kingdom
| | - Owen J. Arthurs
- Department of Clinical Radiology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom
- National Institute of Health Research (NIHR) Great Ormond Street Biomedical Research Centre, London, United Kingdom
- Population, Policy and Practice Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, UCL, London, United Kingdom
| | - Sam Behjati
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, United Kingdom
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
- Department of Paediatrics, University of Cambridge, Cambridge, United Kingdom
| | - John C. Achermann
- Genetics and Genomic Medicine Research and Teaching Department, University College London (UCL) Great Ormond Street Institute of Child Health, UCL, London, United Kingdom
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11
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Simcock IC, Lamouroux A, Sebire NJ, Shelmerdine SC, Arthurs OJ. Less-invasive autopsy for early pregnancy loss. Prenat Diagn 2023; 43:937-949. [PMID: 37127547 DOI: 10.1002/pd.6361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 04/20/2023] [Accepted: 04/21/2023] [Indexed: 05/03/2023]
Abstract
Autopsy investigations provide valuable information regarding fetal death that can assist in the parental bereavement process, and influence future pregnancies, but conventional autopsy is often declined by parents because of its invasive approach. This has led to the development of less-invasive autopsy investigations based on imaging technology to provide a more accessible and acceptable choice for parents when investigating their loss. Whilst the development and use of more conventional clinical imaging techniques (radiographs, CT, MRI, US) are well described in the literature for fetuses over 20 weeks of gestational age, these investigations have limited diagnostic accuracy in imaging smaller fetuses. Techniques such as ultra-high-field MRI (>3T) and micro-focus computed tomography have been shown to have higher diagnostic accuracy whilst still being acceptable to parents. By further developing and increasing the availability of these more innovative imaging techniques, parents will be provided with a greater choice of acceptable options to investigate their loss, which may in turn increase their uptake. We provide a narrative review focussing on the development of high-resolution, non-invasive imaging techniques to evaluate early gestational pregnancy loss.
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Affiliation(s)
- Ian C Simcock
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London, UK
- UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, UK
- NIHR Great Ormond Street Hospital Biomedical Research Centre, London, UK
| | - Audrey Lamouroux
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London, UK
- Obstetrical Gynaecology Department, Nîmes University Hospital, Nîmes, France
- Clinical Genetics Department, Montpellier University Hospital, Montpellier, France
- ICAR Research Team, LIRMM, CNRS and Charles Coulomb Laboratory, UMR 5221 CNRS-UM, BNIF User Facility Imaging, University of Montpellier, Nîmes and Montpellier, Montpellier, France
| | - Neil J Sebire
- UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, UK
- NIHR Great Ormond Street Hospital Biomedical Research Centre, London, UK
- Department of Histopathology, Great Ormond Street Hospital for Children, London, UK
| | - Susan C Shelmerdine
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London, UK
- UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, UK
- NIHR Great Ormond Street Hospital Biomedical Research Centre, London, UK
| | - Owen J Arthurs
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London, UK
- UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, UK
- NIHR Great Ormond Street Hospital Biomedical Research Centre, London, UK
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12
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Docter D, Dawood Y, Jacobs K, Hagoort J, Oostra RJ, van den Hoff MJB, Arthurs OJ, de Bakker BS. Microfocus computed tomography for fetal postmortem imaging: an overview. Pediatr Radiol 2023; 53:632-639. [PMID: 36169668 PMCID: PMC10027643 DOI: 10.1007/s00247-022-05517-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 07/18/2022] [Accepted: 09/06/2022] [Indexed: 10/14/2022]
Abstract
Over the last few years, fetal postmortem microfocus computed tomography (micro-CT) imaging has increased in popularity for both diagnostic and research purposes. Micro-CT imaging could be a substitute for autopsy, particularly in very early gestation fetuses for whom autopsy can be technically challenging and is often unaccepted by parents. This article provides an overview of the latest research in fetal postmortem micro-CT imaging with a focus on diagnostic accuracy, endovascular staining approaches, placental studies and the reversibility of staining. It also discusses new methods that could prove helpful for micro-CT of larger fetuses. While more research is needed, contrast-enhanced micro-CT has the potential to become a suitable alternative to fetal autopsy. Further research using this novel imaging tool could yield wider applications, such as its practise in imaging rare museum specimens.
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Affiliation(s)
- Daniël Docter
- Department of Medical Biology, Amsterdam UMC at University of Amsterdam, Amsterdam, The Netherlands
| | - Yousif Dawood
- Department of Medical Biology, Amsterdam UMC at University of Amsterdam, Amsterdam, The Netherlands
- Department of Obstetrics and Gynecology, Amsterdam UMC at University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
- Amsterdam Reproduction and Development Research Institute, Amsterdam, The Netherlands
| | - Karl Jacobs
- Department of Medical Biology, Amsterdam UMC at University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Reproduction and Development Research Institute, Amsterdam, The Netherlands
- Department of Oral Pain and Dysfunction, Functional Anatomy, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Amsterdam, The Netherlands
| | - Jaco Hagoort
- Department of Medical Biology, Amsterdam UMC at University of Amsterdam, Amsterdam, The Netherlands
| | - Roelof-Jan Oostra
- Department of Medical Biology, Amsterdam UMC at University of Amsterdam, Amsterdam, The Netherlands
| | - Maurice J B van den Hoff
- Department of Medical Biology, Amsterdam UMC at University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Reproduction and Development Research Institute, Amsterdam, The Netherlands
| | - Owen J Arthurs
- Department of Radiology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
- National Institute for Health Research, Great Ormond Street Hospital Biomedical Research Center, London, UK
| | - Bernadette S de Bakker
- Department of Obstetrics and Gynecology, Amsterdam UMC at University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands.
- Amsterdam Reproduction and Development Research Institute, Amsterdam, The Netherlands.
- Department of Pediatric Surgery, Erasmus MC - Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands.
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13
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Novo Matos J, Sargent J, Silva J, Payne JR, Seo J, Spalla I, Borgeat K, Loureiro J, Pereira N, Simcock IC, Hutchinson JC, Arthurs OJ, Luis Fuentes V. Thin and hypokinetic myocardial segments in cats with cardiomyopathy. J Vet Cardiol 2023; 46:5-17. [PMID: 36893525 DOI: 10.1016/j.jvc.2023.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 01/30/2023] [Accepted: 02/08/2023] [Indexed: 02/12/2023]
Abstract
INTRODUCTION/OBJECTIVES Thin and hypokinetic myocardial segments (THyMS) represent adverse ventricular (LV) remodeling in human hypertrophic cardiomyopathy. We describe the echocardiographic features and outcome in cats with THyMS, and in a subpopulation, the echocardiographic phenotype before LV wall thinning was detected (pre-THyMS). ANIMALS Eighty client-owned cats. MATERIALS AND METHODS Retrospective multicenter study. Clinical records were searched for cats with THyMS, defined as LV segment(s) with end-diastolic wall thickness (LVWT) <3 mm and hypokinesis in the presence of ≥one LV segment(s) with LVWT >4 mm and normal wall motion. When available, echocardiograms pre-THyMS were assessed. Survival time was defined as time from first presentation with THyMS to death. RESULTS Mean thickest LV wall segment (MaxLVWT) was 6.1 mm (95% CI 5.8-6.4 mm) and thinnest (MinLVWT) was 1.7 mm (95% CI 1.6-1.9 mm). The LV free wall was affected in 74%, apex in 13% and septum in 5%. Most cats (85%) presented with heart failure and/or arterial thromboembolism. Median circulating troponin I concentration was 1.4 ng/mL ([range 0.07-180 ng/mL]). Prior echocardiography results were available for 13/80 cats, a mean of 2.5 years pre-THyMS. In segments subsequently undergoing thinning, initial MaxLVWT measured 6.7 mm (95% CI 5.8-7.7 mm) vs. 1.9 mm (95% CI 1.5-2.4 mm) at last echocardiogram (P<0.0001). Survival data were available for 56/80 cats, median survival time after diagnosing THyMS was 153 days (95% CI 83-223 days). Cardiac histopathology in one cat revealed that THyMS was associated with severe transmural scarring. CONCLUSIONS Cats with THyMS had advanced cardiomyopathy and a poor prognosis.
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Affiliation(s)
- J Novo Matos
- Department of Veterinary Medicine, University of Cambridge, Madingley Road, CB3 0ES, Cambridge, UK; Clinical Science and Services, Royal Veterinary College, Hawkshead Lane, Hatfield, Hertfordshire, AL9 7TA, London, UK.
| | - J Sargent
- Southern Counties Veterinary Specialists, Unit 6, Forest Corner Farm, Hangersley, BH24 3JW, Ringwood, Hampshire, UK
| | - J Silva
- Department of Veterinary Medicine, University of Cambridge, Madingley Road, CB3 0ES, Cambridge, UK; North Downs Specialist Referrals, The Friesian Buildings 3 & 4, Brewer Street, RH1 4QP, Bletchingley, Surrey, UK
| | - J R Payne
- Langford Vets Small Animal Referral Hospital, University of Bristol, Langford House, BS40 5DU, Langford, UK
| | - J Seo
- Animal Referral Centre, 224 Albany Highway, Schnapper Rock, 0632, Auckland, New Zealand
| | - I Spalla
- Ospedale Veterinario San Francesco, Via Feltrina, 29, 31038, Castagnole, Milan, Italy
| | - K Borgeat
- Langford Vets Small Animal Referral Hospital, University of Bristol, Langford House, BS40 5DU, Langford, UK
| | - J Loureiro
- North Downs Specialist Referrals, The Friesian Buildings 3 & 4, Brewer Street, RH1 4QP, Bletchingley, Surrey, UK
| | - N Pereira
- Freelance Cardiology, Salstrasse 92, 8400, Winterthur, Switzerland
| | - I C Simcock
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, Great Ormond Street, WC1N 3JH, London, UK; UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, Great Ormond Street, WC1N 3JH, London, UK; NIHR Great Ormond Street Hospital Biomedical Research Centre, Great Ormond Street Hospital Biomedical Research Centre, London, UK
| | - J C Hutchinson
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, Great Ormond Street, WC1N 3JH, London, UK; UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, Great Ormond Street, WC1N 3JH, London, UK; NIHR Great Ormond Street Hospital Biomedical Research Centre, Great Ormond Street Hospital Biomedical Research Centre, London, UK
| | - O J Arthurs
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, Great Ormond Street, WC1N 3JH, London, UK; UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, Great Ormond Street, WC1N 3JH, London, UK; NIHR Great Ormond Street Hospital Biomedical Research Centre, Great Ormond Street Hospital Biomedical Research Centre, London, UK
| | - V Luis Fuentes
- Clinical Science and Services, Royal Veterinary College, Hawkshead Lane, Hatfield, Hertfordshire, AL9 7TA, London, UK
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14
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Chambers G, Shelmerdine SC, Aertsen M, Dohna M, Goergen SK, Johnson K, Klein WM, Miller E, Pärtan G, Perry D, Rao P, Robinson C, Stegmann J, Taranath A, Whitby E, van Rijn RR, Arthurs OJ. Current and future funding streams for paediatric postmortem imaging: European Society of Paediatric Radiology survey results. Pediatr Radiol 2023; 53:273-281. [PMID: 36097227 PMCID: PMC9468234 DOI: 10.1007/s00247-022-05485-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 07/11/2022] [Accepted: 08/16/2022] [Indexed: 02/04/2023]
Abstract
BACKGROUND Perinatal and childhood postmortem imaging has been accepted as a noninvasive alternative or adjunct to autopsy. However, the variation in funding models from institution to institution is a major factor prohibiting uniform provision of this service. OBJECTIVE To describe current funding models employed in European and non-European institutions offering paediatric postmortem imaging services and to discuss the perceived barriers to future postmortem imaging service provision. MATERIALS AND METHODS A web-based 16-question survey was distributed to members of the European Society of Paediatric Radiology (ESPR) and ESPR postmortem imaging task force over a 6-month period (March-August 2021). Survey questions related to the radiologic and autopsy services being offered and how each was funded within the respondent's institute. RESULTS Eighteen individual responses were received (13/18, 72.2% from Europe). Only one-third of the institutions (6/18, 33.3%) have fully funded postmortem imaging services, with the remainder receiving partial (6/18, 33.3%) or no funding (5/18, 27.8%). Funding (full or partial) was more commonly available for forensic work (13/18, 72%), particularly where this was nationally provided. Where funding was not provided, the imaging and reporting costs were absorbed by the institute. CONCLUSION Increased access is required for the expansion of postmortem imaging into routine clinical use. This can only be achieved with formal funding on a national level, potentially through health care commissioning and acknowledgement by health care policy makers and pathology services of the value the service provides following the death of a fetus or child. Funding should include the costs involved in training, equipment, reporting and image acquisition.
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Affiliation(s)
- Greg Chambers
- Department of Radiology, Clarindon Wing, B Floor, Leeds General Infirmary, Leeds Teaching Hospital Trust, Leeds, LS1 3EX, UK.
| | - Susan C Shelmerdine
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK.,UCL Great Ormond Street Institute of Child Health, London, UK.,NIHR Great Ormond Street Hospital Biomedical Research Centre, London, UK
| | - Michael Aertsen
- Department of Radiology, University Hospitals KU Leuven, Leuven, Belgium
| | - Martha Dohna
- Department of Paediatric Radiology, Hannover Medical School, Hannover, Germany
| | - Stacy K Goergen
- Monash Health Imaging, Clayton, VIC, Australia.,Department of Imaging, School of Clinical Sciences, Monash University, Clayton, VIC, Australia
| | - Karl Johnson
- Radiology Department, Birmingham Women's and Children's Hospital NHS Foundation Trust, Birmingham, UK
| | - Willemijn M Klein
- Department of Medical Imaging, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Elka Miller
- Department of Medical Imaging, Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa, ON, Canada
| | - Gerald Pärtan
- Department of Radiology, Danube Hospital, Vienna, Austria
| | - David Perry
- Radiology Department, National Women's Health and Starship Children's Hospital, Auckland City Hospital, Auckland, New Zealand
| | - Padma Rao
- Department of Medical Imaging, Royal Children's Hospital, Melbourne, Australia
| | - Claire Robinson
- Department of Imaging, University Hospitals of Leicester NHS Trust, Leicester, UK
| | - Joachim Stegmann
- Department of Radiology, Children's Hospital Wilhelmstift gGmbH, Hamburg, Germany
| | - Ajay Taranath
- Department of Medical Imaging, Women's and Children's Hospital, North Adelaide, South Australia.,Faculty of Health and Medical Sciences, University of Adelaide, South Adelaide, Adelaide, Australia
| | - Elspeth Whitby
- University of Sheffield and Sheffield Teaching Hospitals Foundation Trust, Sheffield, UK
| | - Rick R van Rijn
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, Amsterdam, The Netherlands
| | - Owen J Arthurs
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK.,UCL Great Ormond Street Institute of Child Health, London, UK.,NIHR Great Ormond Street Hospital Biomedical Research Centre, London, UK
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15
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Meshaka R, Arthurs OJ. Are we too reliant on medical imaging? Br J Hosp Med (Lond) 2022; 83:1-3. [PMID: 36594769 DOI: 10.12968/hmed.2022.0460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Imaging technology has revolutionised modern medicine. It is difficult to imagine a time when we practiced without it, but have we become too reliant, and should we be aiming for more judicious use of imaging services?
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Affiliation(s)
- Riwa Meshaka
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London, UK
| | - Owen J Arthurs
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London, UK.,UCL Great Ormond Street Institute of Child Health, London, UK.,NIHR Great Ormond Street Hospital Biomedical Research Centre, London, UK
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16
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Meshaka R, Pinto Dos Santos D, Arthurs OJ, Sebire NJ, Shelmerdine SC. Artificial intelligence reporting guidelines: what the pediatric radiologist needs to know. Pediatr Radiol 2022; 52:2101-2110. [PMID: 34196729 DOI: 10.1007/s00247-021-05129-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 05/06/2021] [Accepted: 06/10/2021] [Indexed: 11/28/2022]
Abstract
There has been an exponential rise in artificial intelligence (AI) research in imaging in recent years. While the dissemination of study data that has the potential to improve clinical practice is welcomed, the level of detail included in early AI research reporting has been highly variable and inconsistent, particularly when compared to more traditional clinical research. However, inclusion checklists are now commonly available and accessible to those writing or reviewing clinical research papers. AI-specific reporting guidelines also exist and include distinct requirements, but these can be daunting for radiologists new to the field. Given that pediatric radiology is a specialty faced with workforce shortages and an ever-increasing workload, AI could help by offering solutions to time-consuming tasks, thereby improving workflow efficiency and democratizing access to specialist opinion. As a result, pediatric radiologists are expected to be increasingly leading and contributing to AI imaging research, and researchers and clinicians alike should feel confident that the findings reported are presented in a transparent way, with sufficient detail to understand how they apply to wider clinical practice. In this review, we describe two of the most clinically relevant and available reporting guidelines to help increase awareness and engage the pediatric radiologist in conducting AI imaging research. This guide should also be useful for those reading and reviewing AI imaging research and as a checklist with examples of what to expect.
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Affiliation(s)
- Riwa Meshaka
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London, WC1N 3JH, UK.,UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, UK.,Great Ormond Street Hospital NIHR Biomedical Research Centre, London, UK
| | | | - Owen J Arthurs
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London, WC1N 3JH, UK.,UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, UK.,Great Ormond Street Hospital NIHR Biomedical Research Centre, London, UK
| | - Neil J Sebire
- UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, UK.,Great Ormond Street Hospital NIHR Biomedical Research Centre, London, UK.,Department of Pathology, Great Ormond Street Hospital for Children, London, UK
| | - Susan C Shelmerdine
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London, WC1N 3JH, UK. .,UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, UK. .,Great Ormond Street Hospital NIHR Biomedical Research Centre, London, UK. .,Department of Clinical Radiology, St. George's Hospital, London, UK.
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17
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Hannon E, Pellegrini M, Scottoni F, Durkin N, Shibuya S, Lutman R, Proctor TJ, Hutchinson JC, Arthurs OJ, Phylactopoulos DE, Maughan EF, Butler CR, Eaton S, Lowdell MW, Bonfanti P, Urbani L, De Coppi P. Lessons learned from pre-clinical testing of xenogeneic decellularized esophagi in a rabbit model. iScience 2022; 25:105174. [PMID: 36217545 PMCID: PMC9547295 DOI: 10.1016/j.isci.2022.105174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 06/21/2022] [Accepted: 09/19/2022] [Indexed: 11/04/2022] Open
Abstract
Decellularization of esophagi from several species for tissue engineering is well described, but successful implantation in animal models of esophageal replacement has been challenging. The purpose of this study was to assess feasibility and applicability of esophageal replacement using decellularized porcine esophageal scaffolds in a new pre-clinical model. Following surgical replacement in rabbits with a vascularizing muscle flap, we observed successful anastomoses of decellularized scaffolds, cues of early neovascularization, and prevention of luminal collapse by the use of biodegradable stents. However, despite the success of the surgical procedure, the long-term survival was limited by the fragility of the animal model. Our results indicate that transplantation of a decellularized porcine scaffold is possible and vascular flaps may be useful to provide a vascular supply, but long-term outcomes require further pre-clinical testing in a different large animal model.
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Affiliation(s)
- Edward Hannon
- Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK,Department of Paediatric Surgery, Leeds Children’s Hospital, Leeds Teaching Hospitals NHS Trust, Leeds LS1 3EX, UK
| | - Marco Pellegrini
- Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Federico Scottoni
- Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK,Department of Pediatric Surgery, Regina Margherita Children’s Hospital, Turin 10126, Italy
| | - Natalie Durkin
- Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Soichi Shibuya
- Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Roberto Lutman
- Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Toby J. Proctor
- Centre for Cell, Gene and Tissue Therapies, Royal Free Hospital & University College London, London NW3 2PF, UK
| | - J. Ciaran Hutchinson
- Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK,Department of Histopathology, Great Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UK
| | - Owen J. Arthurs
- Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK,Department of Radiology, Great Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UK
| | - Demetra-Ellie Phylactopoulos
- Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK,Epithelial Stem Cell Biology & Regenerative Medicine Laboratory, The Francis Crick Institute, London NW1 1AT, UK
| | - Elizabeth F. Maughan
- Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK,Charing Cross Airway Service, Department of Otolaryngology, Charing Cross Hospital, Imperial Healthcare NHS Trust, London W6 8RF, UK
| | - Colin R. Butler
- Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK,ENT Department, Great Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UK
| | - Simon Eaton
- Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Mark W. Lowdell
- Centre for Cell, Gene and Tissue Therapies, Royal Free Hospital & University College London, London NW3 2PF, UK
| | - Paola Bonfanti
- Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK,Epithelial Stem Cell Biology & Regenerative Medicine Laboratory, The Francis Crick Institute, London NW1 1AT, UK,Institute of Immunity & Transplantation, University College London, London NW3 2PP, UK
| | - Luca Urbani
- The Roger Williams Institute of Hepatology, Foundation for Liver Research, London SE5 9NT, UK,Faculty of Life Sciences and Medicine, King’s College London, London SE5 8AF, UK
| | - Paolo De Coppi
- Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK,Specialist Neonatal and Paediatric Surgery, Great Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UK,Corresponding author
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Affiliation(s)
- Owen J Arthurs
- Radiology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK .,UCL Great Ormond Street Institute of Child Health NIHR Biomedical Research Centre, London, UK
| | | | - Alison Steele
- Paediatrics, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK.,Officer for Child Protection, The Royal College of Paediatrics & Child Health, London, UK
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19
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Decrausaz S, Shirley MK, Stock JT, Williams JE, Fewtrell MS, Clark CA, Arthurs OJ, Wells JCK. Evaluation of dual-energy X-ray absorptiometry compared to magnetic resonance imaging for collecting measurements of the human bony pelvis. Am J Hum Biol 2022; 34:e23753. [PMID: 35460113 PMCID: PMC9541267 DOI: 10.1002/ajhb.23753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 04/05/2022] [Accepted: 04/08/2022] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVES Imaging methods to measure the human pelvis in vivo provide opportunities to better understand pelvic variation and adaptation. Magnetic resonance imaging (MRI) provides high-resolution images, but is more expensive than dual-energy X-ray absorptiometry (DXA). We sought to compare pelvic breadth measurements collected from the same individuals using both methods, to investigate if there are systematic differences in pelvic measurement between these imaging methods. METHODS Three pelvic breadth dimensions (bi-iliac breadth, bi-acetabular breadth, medio-lateral inlet breadth) were collected from MRI and DXA scans of a cross-sectional sample of healthy, nulliparous adult women of South Asian ancestry (n = 63). Measurements of MRI and DXA pelvic dimensions were collected four times in total, with one baseline data collection session and three replications. Data collected from these sessions were averaged, used to calculate technical error of measurement and entered into a Bland-Altman analysis. Linear regression models were fitted with a given MRI pelvic measurement regressed on the same measurement collected from DXA scans, as well as MRI mean bias regressed on DXA mean bias. RESULTS Technical error of measurement was higher in DXA measurements of bi-iliac breadth and medio-lateral pelvic inlet breadth and higher for MRI measurements of bi-acetabular breadth. Bland Altman analyses showed no statistically significant relationship between the mean bias of MRI and DXA, and the differences between MRI and DXA pelvic measurements. CONCLUSIONS DXA measurements of pelvic breadth are comparable to MRI measurements of pelvic breadth. DXA is a less costly imaging technique than MRI and can be used to collect measurements of skeletal elements in living people.
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Affiliation(s)
- Sarah‐Louise Decrausaz
- Department of ArchaeologyUniversity of CambridgeCambridgeUK,Department of AnthropologyUniversity of VictoriaVictoriaCanada
| | - Meghan K. Shirley
- Population, Policy, and Practice Research and Teaching DepartmentChildhood Nutrition Research Centre, UCL Great Ormond Street Institute of Child HealthLondonUK,Division of GI, Hepatology and NutritionThe Children's Hospital of PhiladelphiaPhiladelphiaPennsylvaniaUSA
| | - Jay T. Stock
- Department of ArchaeologyUniversity of CambridgeCambridgeUK,Department of AnthropologyWestern UniversityLondonCanada,Department of ArchaeologyMax Planck Centre for the Science of Human HistoryJenaGermany
| | - Jane E. Williams
- Population, Policy, and Practice Research and Teaching DepartmentChildhood Nutrition Research Centre, UCL Great Ormond Street Institute of Child HealthLondonUK
| | - Mary S. Fewtrell
- Population, Policy, and Practice Research and Teaching DepartmentChildhood Nutrition Research Centre, UCL Great Ormond Street Institute of Child HealthLondonUK
| | - Chris A. Clark
- Population, Policy, and Practice Research and Teaching DepartmentChildhood Nutrition Research Centre, UCL Great Ormond Street Institute of Child HealthLondonUK
| | - Owen J. Arthurs
- Population, Policy, and Practice Research and Teaching DepartmentChildhood Nutrition Research Centre, UCL Great Ormond Street Institute of Child HealthLondonUK
| | - Jonathan C. K. Wells
- Population, Policy, and Practice Research and Teaching DepartmentChildhood Nutrition Research Centre, UCL Great Ormond Street Institute of Child HealthLondonUK
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20
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Shirley MK, Arthurs OJ, Seunarine KK, Cole TJ, Eaton S, Williams JE, Clark CA, Wells JCK. Implications of leg length for metabolic health and fitness. Evol Med Public Health 2022; 10:316-324. [PMID: 35903461 PMCID: PMC9326181 DOI: 10.1093/emph/eoac023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 06/14/2022] [Indexed: 11/13/2022] Open
Abstract
Background and objectives Several studies have linked longer legs with favorable adult metabolic health outcomes and greater offspring birth weight. A recent Mendelian randomization study suggested a causal link between height and cardiometabolic risk; however, the underlying reasons remain poorly understood. Methodology Using a cross-sectional design, we tested in a convenience sample of 70 healthy young women whether birth weight and tibia length as markers of early-life conditions associated more strongly with metabolically beneficial traits like organ size and skeletal muscle mass (SMM) than a statistically derived height-residual variable indexing later, more canalized growth. Results Consistent with the 'developmental origins of health and disease' hypothesis, we found relatively strong associations of tibia length-but not birth weight-with adult organ size, brain size, SMM and resting energy expenditure measured by magnetic resonance imaging (MRI), dual-energy X-ray absorptiometry and indirect calorimetry, respectively. Conclusions and implications Building on prior work, these results suggest that leg length is a sensitive marker of traits directly impacting metabolic and reproductive health. Alongside findings in the same sample relating tibia length and height-residual to MRI-measured pelvic dimensions, we suggest there may exist a degree of coordination in the development of long bone, lean mass and pelvic traits, possibly centered on early, pre-pubertal growth periods. Such phenotypic coordination has important implications for fitness, serving to benefit both adult health and the health of offspring in subsequent generations.
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Affiliation(s)
- Meghan K Shirley
- UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London WC1N 1EH, UK
| | - Owen J Arthurs
- UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London WC1N 1EH, UK
- Department of Radiology, Great Ormond Street Hospital for Children, Great Ormond Street, London WC1N 3JH, UK
| | - Kiran K Seunarine
- UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London WC1N 1EH, UK
| | - Tim J Cole
- UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London WC1N 1EH, UK
| | - Simon Eaton
- UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London WC1N 1EH, UK
| | - Jane E Williams
- UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London WC1N 1EH, UK
| | - Chris A Clark
- UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London WC1N 1EH, UK
| | - Jonathan C K Wells
- UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London WC1N 1EH, UK
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21
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Shelmerdine SC, White RD, Liu H, Arthurs OJ, Sebire NJ. Artificial intelligence for radiological paediatric fracture assessment: a systematic review. Insights Imaging 2022; 13:94. [PMID: 35657439 PMCID: PMC9166920 DOI: 10.1186/s13244-022-01234-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 05/12/2022] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Majority of research and commercial efforts have focussed on use of artificial intelligence (AI) for fracture detection in adults, despite the greater long-term clinical and medicolegal implications of missed fractures in children. The objective of this study was to assess the available literature regarding diagnostic performance of AI tools for paediatric fracture assessment on imaging, and where available, how this compares with the performance of human readers. MATERIALS AND METHODS MEDLINE, Embase and Cochrane Library databases were queried for studies published between 1 January 2011 and 2021 using terms related to 'fracture', 'artificial intelligence', 'imaging' and 'children'. Risk of bias was assessed using a modified QUADAS-2 tool. Descriptive statistics for diagnostic accuracies were collated. RESULTS Nine eligible articles from 362 publications were included, with most (8/9) evaluating fracture detection on radiographs, with the elbow being the most common body part. Nearly all articles used data derived from a single institution, and used deep learning methodology with only a few (2/9) performing external validation. Accuracy rates generated by AI ranged from 88.8 to 97.9%. In two of the three articles where AI performance was compared to human readers, sensitivity rates for AI were marginally higher, but this was not statistically significant. CONCLUSIONS Wide heterogeneity in the literature with limited information on algorithm performance on external datasets makes it difficult to understand how such tools may generalise to a wider paediatric population. Further research using a multicentric dataset with real-world evaluation would help to better understand the impact of these tools.
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Affiliation(s)
- Susan C. Shelmerdine
- grid.420468.cDepartment of Clinical Radiology, Great Ormond Street Hospital for Children, London, UK ,grid.83440.3b0000000121901201Great Ormond Street Hospital for Children, UCL Great Ormond Street Institute of Child Health, London, UK ,grid.420468.cGreat Ormond Street Hospital NIHR Biomedical Research Centre, London, UK ,grid.464688.00000 0001 2300 7844Department of Clinical Radiology, St. George’s Hospital, London, UK
| | - Richard D. White
- grid.241103.50000 0001 0169 7725Department of Radiology, University Hospital of Wales, Cardiff, UK
| | - Hantao Liu
- grid.5600.30000 0001 0807 5670School of Computer Science and Informatics, Cardiff University, Cardiff, UK
| | - Owen J. Arthurs
- grid.420468.cDepartment of Clinical Radiology, Great Ormond Street Hospital for Children, London, UK ,grid.83440.3b0000000121901201Great Ormond Street Hospital for Children, UCL Great Ormond Street Institute of Child Health, London, UK ,grid.420468.cGreat Ormond Street Hospital NIHR Biomedical Research Centre, London, UK
| | - Neil J. Sebire
- grid.420468.cDepartment of Clinical Radiology, Great Ormond Street Hospital for Children, London, UK ,grid.83440.3b0000000121901201Great Ormond Street Hospital for Children, UCL Great Ormond Street Institute of Child Health, London, UK ,grid.420468.cGreat Ormond Street Hospital NIHR Biomedical Research Centre, London, UK
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22
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Meshaka R, Garbera DM, Arthurs OJ, Shelmerdine SC. Re: value of additional lateral radiographs in paediatric skeletal surveys for suspected physical abuse. A reply. Clin Radiol 2022; 77:475. [PMID: 35354534 DOI: 10.1016/j.crad.2022.02.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 02/16/2022] [Indexed: 11/25/2022]
Affiliation(s)
- R Meshaka
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, WC1N 3JH, UK.
| | - D M Garbera
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, WC1N 3JH, UK
| | - O J Arthurs
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, WC1N 3JH, UK; UCL Great Ormond Street Institute of Child Health, London, UK; NIHR Great Ormond Street Hospital Biomedical Research Centre, UK
| | - S C Shelmerdine
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, WC1N 3JH, UK; UCL Great Ormond Street Institute of Child Health, London, UK; NIHR Great Ormond Street Hospital Biomedical Research Centre, UK
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23
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Abstract
Post-mortem imaging for the investigation of perinatal deaths is an acceptable tool amongst parents and religious groups, enabling a less invasive autopsy examination. Nevertheless, availability is scarce nationwide, and there is some debate amongst radiologists regarding the best practice and optimal protocols for performing such studies. Much of the published literature to date focusses on single centre experiences or interesting case reports. Diagnostic accuracy studies are available for a variety of individual imaging modalities (e.g. post-mortem CT, MRI, ultrasound and micro-CT), however, assimilating this information is important when attempting to start a local service.In this article, we present a comprehensive review summarising the latest research, recently published international guidelines, and describe which imaging modalities are best suited for specific indications. When the antenatal clinical findings are not supported by the post-mortem imaging, we also suggest how and when an invasive autopsy may be considered. In general, a collaborative working relationship within a multidisciplinary team (consisting of radiologists, radiographers, the local pathology department, mortuary staff, foetal medicine specialists, obstetricians and bereavement midwives) is vital for a successful service.
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Affiliation(s)
- Susan C Shelmerdine
- Department of Radiology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK.,UCL Great Ormond Street Institute of Child Health, London, UK.,NIHR Great Ormond Street Hospital Biomedical Research Centre, 30 Guilford Street, Bloomsbury, London, UK.,Department of Radiology, St. George's Hospital, Blackshaw Road, London, UK
| | - Owen J Arthurs
- Department of Radiology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK.,UCL Great Ormond Street Institute of Child Health, London, UK.,NIHR Great Ormond Street Hospital Biomedical Research Centre, 30 Guilford Street, Bloomsbury, London, UK
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24
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Shelmerdine SC, Ashworth MT, Carmichael J, Arthurs OJ. Micro-CT imaging of congenital high airway obstruction syndrome. Ultrasound Obstet Gynecol 2022; 59:687-689. [PMID: 34580943 DOI: 10.1002/uog.24782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 09/11/2021] [Accepted: 09/16/2021] [Indexed: 06/13/2023]
Affiliation(s)
- S C Shelmerdine
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
- UCL Great Ormond Street Institute of Child Health, London, UK
| | - M T Ashworth
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - J Carmichael
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
- King's College London, London, UK
| | - O J Arthurs
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
- UCL Great Ormond Street Institute of Child Health, London, UK
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25
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Meshaka R, Whittam FC, Guessoum M, Eleti S, Shelmerdine SC, Arthurs OJ, McHugh K, Hiorns MP, Humphries PD, Calder AD, Easty MJ, Gaynor EP, Watson T. Abdominal US in Pediatric Inflammatory Multisystem Syndrome Associated with SARS-CoV-2 (PIMS-TS). Radiology 2022; 303:173-181. [PMID: 34874199 PMCID: PMC8961721 DOI: 10.1148/radiol.211737] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Background Children with pediatric inflammatory syndrome temporally associated with SARS-CoV-2 (PIMS-TS), also known as multisystem inflammatory syndrome in children, present with abdominal pain among other nonspecific symptoms. Although initial imaging features of PIMS-TS have been reported, the duration of sonographic features remains unknown. Purpose To describe the abdominal US features of PIMS-TS at initial presentation and follow-up. Materials and Methods A retrospective review of children and young adults presenting with clinical features suspicious for PIMS-TS between April 2020 and June 2021 was carried out. US features were documented and reviewed at initial presentation and follow-up. Descriptive statistics were used and interobserver variability was calculated. Results Of 140 children and young adults presenting with suspected PIMS-TS, 120 had confirmed PIMS-TS (median age, 9 years; interquartile range, 7-12 years; 65 male patients) and 102 underwent abdominal US at presentation. PIMS-TS was present as a single abnormality in 109 of the 120 patients (91%) and abdominal symptoms were present in 104 of the 109 (95%). US examinations were abnormal in 86 of 102 patients (84%), with ascites being the most common abnormality in 65 (64%; 95% CI: 54, 73). Bowel wall thickening was present at US in 14 of the 102 patients (14%; 95% CI: 7, 20) and mesenteric inflammation was present in 16 (16%; 95% CI: 9, 23); all of these patients presented with abdominal symptoms. Among the patients with bowel wall thickening, the distal and terminal ileum were most involved (eight of 14 patients, 57%). Abdominal symptoms decreased to seven of 56 patients (13%) in those followed up at 6 months. Thirty-eight patients underwent follow-up US, and the presence of bowel inflammation had decreased to three of 27 patients (11%; 95% CI: -1, 23) in those followed up for less than 2 months and 0 of 17 (0%) in those followed up for more than 2 months. Conclusion Of 102 patients with pediatric inflammatory multisystem syndrome temporally associated with SARS-CoV-2 who underwent US at presentation, 14 (14%) had abdominal US findings of bowel inflammation and 16 (16%) had mesenteric edema. All US abnormalities resolved after 2 months. © RSNA, 2022 Online supplemental material is available for this article. See also the editorial by van Rijn and Pajkrt in this issue.
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Affiliation(s)
- Riwa Meshaka
- From the Department of Imaging, Great Ormond Street Hospital, Great Ormond Street, London WC1N 3JH, England (R.M., F.C.W., M.G., S.E., K.M., M.P.H., P.D.H., A.D.C., M.J.E., E.P.G., T.W.); NIHR Great Ormond Street Hospital Biomedical Research Centre, London, England (S.C.S., O.J.A.); and University College London Hospital, London, England (P.D.H.)
| | - Fern C Whittam
- From the Department of Imaging, Great Ormond Street Hospital, Great Ormond Street, London WC1N 3JH, England (R.M., F.C.W., M.G., S.E., K.M., M.P.H., P.D.H., A.D.C., M.J.E., E.P.G., T.W.); NIHR Great Ormond Street Hospital Biomedical Research Centre, London, England (S.C.S., O.J.A.); and University College London Hospital, London, England (P.D.H.)
| | - Myriam Guessoum
- From the Department of Imaging, Great Ormond Street Hospital, Great Ormond Street, London WC1N 3JH, England (R.M., F.C.W., M.G., S.E., K.M., M.P.H., P.D.H., A.D.C., M.J.E., E.P.G., T.W.); NIHR Great Ormond Street Hospital Biomedical Research Centre, London, England (S.C.S., O.J.A.); and University College London Hospital, London, England (P.D.H.)
| | - Saigeet Eleti
- From the Department of Imaging, Great Ormond Street Hospital, Great Ormond Street, London WC1N 3JH, England (R.M., F.C.W., M.G., S.E., K.M., M.P.H., P.D.H., A.D.C., M.J.E., E.P.G., T.W.); NIHR Great Ormond Street Hospital Biomedical Research Centre, London, England (S.C.S., O.J.A.); and University College London Hospital, London, England (P.D.H.)
| | - Susan C Shelmerdine
- From the Department of Imaging, Great Ormond Street Hospital, Great Ormond Street, London WC1N 3JH, England (R.M., F.C.W., M.G., S.E., K.M., M.P.H., P.D.H., A.D.C., M.J.E., E.P.G., T.W.); NIHR Great Ormond Street Hospital Biomedical Research Centre, London, England (S.C.S., O.J.A.); and University College London Hospital, London, England (P.D.H.)
| | - Owen J Arthurs
- From the Department of Imaging, Great Ormond Street Hospital, Great Ormond Street, London WC1N 3JH, England (R.M., F.C.W., M.G., S.E., K.M., M.P.H., P.D.H., A.D.C., M.J.E., E.P.G., T.W.); NIHR Great Ormond Street Hospital Biomedical Research Centre, London, England (S.C.S., O.J.A.); and University College London Hospital, London, England (P.D.H.)
| | - Kieran McHugh
- From the Department of Imaging, Great Ormond Street Hospital, Great Ormond Street, London WC1N 3JH, England (R.M., F.C.W., M.G., S.E., K.M., M.P.H., P.D.H., A.D.C., M.J.E., E.P.G., T.W.); NIHR Great Ormond Street Hospital Biomedical Research Centre, London, England (S.C.S., O.J.A.); and University College London Hospital, London, England (P.D.H.)
| | - Melanie P Hiorns
- From the Department of Imaging, Great Ormond Street Hospital, Great Ormond Street, London WC1N 3JH, England (R.M., F.C.W., M.G., S.E., K.M., M.P.H., P.D.H., A.D.C., M.J.E., E.P.G., T.W.); NIHR Great Ormond Street Hospital Biomedical Research Centre, London, England (S.C.S., O.J.A.); and University College London Hospital, London, England (P.D.H.)
| | - Paul D Humphries
- From the Department of Imaging, Great Ormond Street Hospital, Great Ormond Street, London WC1N 3JH, England (R.M., F.C.W., M.G., S.E., K.M., M.P.H., P.D.H., A.D.C., M.J.E., E.P.G., T.W.); NIHR Great Ormond Street Hospital Biomedical Research Centre, London, England (S.C.S., O.J.A.); and University College London Hospital, London, England (P.D.H.)
| | - Alistair D Calder
- From the Department of Imaging, Great Ormond Street Hospital, Great Ormond Street, London WC1N 3JH, England (R.M., F.C.W., M.G., S.E., K.M., M.P.H., P.D.H., A.D.C., M.J.E., E.P.G., T.W.); NIHR Great Ormond Street Hospital Biomedical Research Centre, London, England (S.C.S., O.J.A.); and University College London Hospital, London, England (P.D.H.)
| | - Marina J Easty
- From the Department of Imaging, Great Ormond Street Hospital, Great Ormond Street, London WC1N 3JH, England (R.M., F.C.W., M.G., S.E., K.M., M.P.H., P.D.H., A.D.C., M.J.E., E.P.G., T.W.); NIHR Great Ormond Street Hospital Biomedical Research Centre, London, England (S.C.S., O.J.A.); and University College London Hospital, London, England (P.D.H.)
| | - Edward P Gaynor
- From the Department of Imaging, Great Ormond Street Hospital, Great Ormond Street, London WC1N 3JH, England (R.M., F.C.W., M.G., S.E., K.M., M.P.H., P.D.H., A.D.C., M.J.E., E.P.G., T.W.); NIHR Great Ormond Street Hospital Biomedical Research Centre, London, England (S.C.S., O.J.A.); and University College London Hospital, London, England (P.D.H.)
| | - Tom Watson
- From the Department of Imaging, Great Ormond Street Hospital, Great Ormond Street, London WC1N 3JH, England (R.M., F.C.W., M.G., S.E., K.M., M.P.H., P.D.H., A.D.C., M.J.E., E.P.G., T.W.); NIHR Great Ormond Street Hospital Biomedical Research Centre, London, England (S.C.S., O.J.A.); and University College London Hospital, London, England (P.D.H.)
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26
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Arthurs OJ, van Rijn RR, Stafrace S, Rosendahl K. Point-of-care ultrasound: reply to Andronikou et al. and Györgyi et al. Pediatr Radiol 2022; 52:610-611. [PMID: 34559279 PMCID: PMC8461436 DOI: 10.1007/s00247-021-05183-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 08/03/2021] [Accepted: 08/11/2021] [Indexed: 12/04/2022]
Affiliation(s)
- Owen J. Arthurs
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, WC1N 3JH UK ,UCL Great Ormond Street Institute of Child Health, London, UK ,NIHR Great Ormond Street Hospital Biomedical Research Centre, London, UK
| | - Rick R. van Rijn
- Department of Radiology, Emma Children’s Hospital–Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Samuel Stafrace
- Department of Diagnostic Imaging, Sidra Medicine, Doha, Qatar ,Weill Cornell Medicine, Doha, Qatar
| | - Karen Rosendahl
- Department of Radiology, University Hospital of North Norway, Tromsø, Norway ,The Arctic University of Norway, Tromsø, Norway
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27
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Meshaka R, Garbera DM, Arthurs OJ, Shelmerdine SC. Value of additional lateral radiographs in paediatric skeletal surveys for suspected physical abuse. Clin Radiol 2022; 77:e40-e47. [PMID: 34742547 DOI: 10.1016/j.crad.2021.09.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 09/24/2021] [Indexed: 11/25/2022]
Abstract
AIM To determine the added value of lateral limb radiographs in suspected physical abuse (SPA), particularly with regard to fracture detection and reporter confidence. METHODS AND MATERIALS A 3-year (October 2017 to November 2020) retrospective study was conducted. Two blinded paediatric radiologists independently reviewed the appendicular radiographs for the presence of fractures, first by reviewing just the frontal projections, then both frontal and lateral radiographs. The additional yield of fractures and changes in reporting confidence scores were recorded. RESULTS One hundred and thirty-eight skeletal surveys (29 live, 109 deceased children) were assessed, consisting of 16 appendicular fractures imaged in two projections (six wrist, five knee, five ankle). In the majority of cases (14/16) the fractures were already visible on the frontal view with only two fractures (one distal radius, one distal tibial) identified only by lateral projection on the blinded review. One fracture (distal tibia) was visible only on the frontal radiograph (not lateral view). The addition of lateral projection did not lead to overcalling of fractures in the remaining normal studies. Radiologist confidence scores showed an improvement with the addition of a lateral projection when a study was thought to be normal (p=0.001-0.003), but not when a fracture was identified (p>0.05). CONCLUSION The addition of lateral radiographs improves reporting confidence in normal skeletal surveys, but only rarely helped to detect additional fractures given that most were visible on frontal projections. Larger multicentre studies of clinical practice are required to confirm these findings.
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Affiliation(s)
- R Meshaka
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, WC1N 3JH, UK.
| | - D M Garbera
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, WC1N 3JH, UK
| | - O J Arthurs
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, WC1N 3JH, UK; UCL Great Ormond Street Institute of Child Health, London, UK; NIHR Great Ormond Street Hospital Biomedical Research Centre, UK
| | - S C Shelmerdine
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, WC1N 3JH, UK; UCL Great Ormond Street Institute of Child Health, London, UK; NIHR Great Ormond Street Hospital Biomedical Research Centre, UK
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Privitera L, Paraboschi I, Dixit D, Arthurs OJ, Giuliani S. Image-guided surgery and novel intraoperative devices for enhanced visualisation in general and paediatric surgery: a review. Innov Surg Sci 2021; 6:161-172. [PMID: 35937852 PMCID: PMC9294338 DOI: 10.1515/iss-2021-0028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 12/17/2021] [Indexed: 12/27/2022] Open
Abstract
Fluorescence guided surgery, augmented reality, and intra-operative imaging devices are rapidly pervading the field of surgical interventions, equipping the surgeon with powerful tools capable of enhancing the surgical visualisation of anatomical normal and pathological structures. There is a wide range of possibilities in the adult population to use these novel technologies and devices in the guidance for surgical procedures and minimally invasive surgeries. Their applications and their use have also been increasingly growing in the field of paediatric surgery, where the detailed visualisation of small anatomical structures could reduce procedure time, minimising surgical complications and ultimately improve the outcome of surgery. This review aims to illustrate the mechanisms underlying these innovations and their main applications in the clinical setting.
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Affiliation(s)
- Laura Privitera
- Wellcome/EPSRC Centre for Interventional & Surgical Sciences, London, UK,Developmental Biology and Cancer Programme, UCL Great Ormond Street Institute of Child Health, London, UK
| | - Irene Paraboschi
- Wellcome/EPSRC Centre for Interventional & Surgical Sciences, London, UK,Developmental Biology and Cancer Programme, UCL Great Ormond Street Institute of Child Health, London, UK
| | - Divyansh Dixit
- Faculty of Medicine, University of Southampton, Southampton, UK
| | - Owen J Arthurs
- Department of Clinical Radiology, NHS Foundation Trust, Great Ormond Street Hospital for Children, London, UK,NIHR GOSH Biomedical Research Centre, NHS Foundation Trust, UCL Great Ormond Street Institute of Child Health, London, UK
| | - Stefano Giuliani
- Wellcome/EPSRC Centre for Interventional & Surgical Sciences, London, UK,Developmental Biology and Cancer Programme, UCL Great Ormond Street Institute of Child Health, London, UK,Department of Specialist Neonatal and Paediatric Surgery, NHS Foundation Trust, Great Ormond Street Hospital for Children, London, UK
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Shelmerdine SC, Arthurs OJ, Denniston A, Sebire NJ. Review of study reporting guidelines for clinical studies using artificial intelligence in healthcare. BMJ Health Care Inform 2021; 28:bmjhci-2021-100385. [PMID: 34426417 PMCID: PMC8383863 DOI: 10.1136/bmjhci-2021-100385] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 08/09/2021] [Indexed: 02/07/2023] Open
Abstract
High-quality research is essential in guiding evidence-based care, and should be reported in a way that is reproducible, transparent and where appropriate, provide sufficient detail for inclusion in future meta-analyses. Reporting guidelines for various study designs have been widely used for clinical (and preclinical) studies, consisting of checklists with a minimum set of points for inclusion. With the recent rise in volume of research using artificial intelligence (AI), additional factors need to be evaluated, which do not neatly conform to traditional reporting guidelines (eg, details relating to technical algorithm development). In this review, reporting guidelines are highlighted to promote awareness of essential content required for studies evaluating AI interventions in healthcare. These include published and in progress extensions to well-known reporting guidelines such as Standard Protocol Items: Recommendations for Interventional Trials-AI (study protocols), Consolidated Standards of Reporting Trials-AI (randomised controlled trials), Standards for Reporting of Diagnostic Accuracy Studies-AI (diagnostic accuracy studies) and Transparent Reporting of a multivariable prediction model for Individual Prognosis Or Diagnosis-AI (prediction model studies). Additionally there are a number of guidelines that consider AI for health interventions more generally (eg, Checklist for Artificial Intelligence in Medical Imaging (CLAIM), minimum information (MI)-CLAIM, MI for Medical AI Reporting) or address a specific element such as the ‘learning curve’ (Developmental and Exploratory Clinical Investigation of Decision-AI). Economic evaluation of AI health interventions is not currently addressed, and may benefit from extension to an existing guideline. In the face of a rapid influx of studies of AI health interventions, reporting guidelines help ensure that investigators and those appraising studies consider both the well-recognised elements of good study design and reporting, while also adequately addressing new challenges posed by AI-specific elements.
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Affiliation(s)
| | - Owen J Arthurs
- Radiology, Great Ormond Street Hospital NHS Foundation Trust, London, UK
| | - Alastair Denniston
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | - Neil J Sebire
- Digital Research, Informatics and Virtual Environments Unit (DRIVE), London, UK
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Shelmerdine SC, Hutchinson JC, Lewis C, Simcock IC, Sekar T, Sebire NJ, Arthurs OJ. A pragmatic evidence-based approach to post-mortem perinatal imaging. Insights Imaging 2021; 12:101. [PMID: 34264420 PMCID: PMC8282801 DOI: 10.1186/s13244-021-01042-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 06/24/2021] [Indexed: 12/16/2022] Open
Abstract
Post-mortem imaging has a high acceptance rate amongst parents and healthcare professionals as a non-invasive method for investigating perinatal deaths. Previously viewed as a 'niche' subspecialty, it is becoming increasingly requested, with general radiologists now more frequently asked to oversee and advise on appropriate imaging protocols. Much of the current literature to date has focussed on diagnostic accuracy and clinical experiences of individual centres and their imaging techniques (e.g. post-mortem CT, MRI, ultrasound and micro-CT), and pragmatic, evidence-based guidance for how to approach such referrals in real-world practice is lacking. In this review, we summarise the latest research and provide an approach and flowchart to aid decision-making for perinatal post-mortem imaging. We highlight key aspects of the maternal and antenatal history that radiologists should consider when protocolling studies (e.g. antenatal imaging findings and history), and emphasise important factors that could impact the diagnostic quality of post-mortem imaging examinations (e.g. post-mortem weight and time interval). Considerations regarding when ancillary post-mortem image-guided biopsy tests are beneficial are also addressed, and we provide key references for imaging protocols for a variety of cross-sectional imaging modalities.
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Affiliation(s)
- Susan C Shelmerdine
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, WC1N 3JH, UK. .,UCL Great Ormond Street Institute of Child Health, London, UK. .,Great Ormond Street Hospital NIHR Biomedical Research Centre, London, UK.
| | - J Ciaran Hutchinson
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, WC1N 3JH, UK.,UCL Great Ormond Street Institute of Child Health, London, UK.,Great Ormond Street Hospital NIHR Biomedical Research Centre, London, UK
| | - Celine Lewis
- Population, Policy and Practice Department, UCL GOS Institute of Child Health, London, UK.,North Thames Genomic Laboratory Hub, Great Ormond Street Hospital, London, UK
| | - Ian C Simcock
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, WC1N 3JH, UK.,UCL Great Ormond Street Institute of Child Health, London, UK.,Great Ormond Street Hospital NIHR Biomedical Research Centre, London, UK
| | - Thivya Sekar
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, WC1N 3JH, UK.,UCL Great Ormond Street Institute of Child Health, London, UK.,Great Ormond Street Hospital NIHR Biomedical Research Centre, London, UK
| | - Neil J Sebire
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, WC1N 3JH, UK.,UCL Great Ormond Street Institute of Child Health, London, UK.,Great Ormond Street Hospital NIHR Biomedical Research Centre, London, UK
| | - Owen J Arthurs
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, WC1N 3JH, UK.,UCL Great Ormond Street Institute of Child Health, London, UK.,Great Ormond Street Hospital NIHR Biomedical Research Centre, London, UK
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Simcock IC, Reeve R, Burnett C, Costigan C, McNair H, Robinson C, Arthurs OJ. Clinical academic radiographers - A challenging but rewarding career. Radiography (Lond) 2021; 27 Suppl 1:S14-S19. [PMID: 34274226 DOI: 10.1016/j.radi.2021.06.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 05/11/2021] [Accepted: 06/20/2021] [Indexed: 12/28/2022]
Abstract
OBJECTIVES To explain what a clinical academic career can be, what it can lead to for the individual, profession and most importantly the patient, and why these roles are so important to radiography. KEY FINDINGS Multiple challenges to the adoption of clinical academic careers exist, including achievable measurable outcomes, visibility & senior support, and balancing different time demands. Equally the rewards are wide ranging and can advance both the individual and profession through role extension opportunities, increased career progression, patient benefits, and academic and research skills. CONCLUSION Clinical academic careers can provide advantages for the individual, department, profession and most importantly the patient with advanced clinical practice through evidenced based research. IMPLICATIONS FOR PRACTICE Improving clinical academic careers within Radiography will promote research participation and increase radiographic roles in patient-centred research delivery and development. Combining evidenced based research with academic skills will lead to improved patient care and better clinical outcomes.
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Affiliation(s)
- I C Simcock
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London, UK; UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, UK; National Institute of Health Research, Great Ormond Street Hospital Biomedical Research Centre, London, UK.
| | - R Reeve
- Diagnostic Imaging Department, Portsmouth Hospitals University NHS Trust, Portsmouth, UK; University of Southampton, Southampton, UK.
| | - C Burnett
- Leeds Teaching Hospitals NHS Trust, UK; Leeds Institute of Medical Research, University of Leeds, UK; Leeds National Institute of Health Research Biomedical Research Centre, UK.
| | - C Costigan
- Nottingham University Hospitals NHS Trust, Nottingham, UK; National Institute of Health Research, Nottingham Biomedical Research Centre, University of Nottingham, Nottingham, UK.
| | - H McNair
- Royal Marsden NHS Foundation Trust and Institute of Cancer Research, London, UK.
| | - C Robinson
- University Hospitals of Leicester NHS Trust, Infirmary Square, Leicester, UK.
| | - O J Arthurs
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London, UK; UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, UK; National Institute of Health Research, Great Ormond Street Hospital Biomedical Research Centre, London, UK.
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van Wassenaer EA, Daams JG, Benninga MA, Rosendahl K, Koot BGP, Stafrace S, Arthurs OJ, van Rijn RR. Non-radiologist-performed abdominal point-of-care ultrasonography in paediatrics - a scoping review. Pediatr Radiol 2021; 51:1386-1399. [PMID: 33837798 PMCID: PMC8266706 DOI: 10.1007/s00247-021-04997-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 10/06/2020] [Accepted: 02/03/2021] [Indexed: 12/16/2022]
Abstract
BACKGROUND Historically, US in the paediatric setting has mostly been the domain of radiologists. However, in the last decade, there has been an uptake of non-radiologist point-of-care US. OBJECTIVE To gain an overview of abdominal non-radiologist point-of-care US in paediatrics. MATERIALS AND METHODS We conducted a scoping review regarding the uses of abdominal non-radiologist point-of-care US, quality of examinations and training, patient perspective, financial costs and legal consequences following the use of non-radiologist point-of-care US. We conducted an advanced search of the following databases: Medline, Embase and Web of Science Conference Proceedings. We included published original research studies describing abdominal non-radiologist point-of-care US in children. We limited studies to English-language articles from Western countries. RESULTS We found a total of 5,092 publications and selected 106 publications for inclusion: 39 studies and 51 case reports or case series on the state-of-art of abdominal non-radiologist point-of-care US, 14 on training of non-radiologists, and 1 each on possible harms following non-radiologist point-of-care US and patient satisfaction. According to included studies, non-radiologist point-of-care US is increasingly used, but no standardised training guidelines exist. We found no studies regarding the financial consequences of non-radiologist point-of-care US. CONCLUSION This scoping review supports the further development of non-radiologist point-of-care US and underlines the need for consensus on who can do which examination after which level of training among US performers. More research is needed on training non-radiologists and on the costs-to-benefits of non-radiologist point-of-care US.
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Affiliation(s)
- Elsa A van Wassenaer
- Emma Children's Hospital, Amsterdam UMC, Paediatric Gastroenterology, University of Amsterdam, Meibergdreef 9, 1105AZ, Amsterdam, The Netherlands. .,Amsterdam Reproduction and Development, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands. .,Amsterdam Gastroenterology and Metabolism,Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands.
| | - Joost G Daams
- Amsterdam UMC, Medical Library, University of Amsterdam, Amsterdam, The Netherlands
| | - Marc A Benninga
- Emma Children's Hospital, Amsterdam UMC, Paediatric Gastroenterology, University of Amsterdam, Meibergdreef 9, 1105AZ, Amsterdam, The Netherlands
| | - Karen Rosendahl
- Department of Radiology, Section of Paediatric Radiology, University Hospital North Norway, Tromsø, Norway.,Department of Clinical Medicine, Faculty of Health Sciences, UiT the Arctic University of Norway, Tromsø, Norway
| | - Bart G P Koot
- Emma Children's Hospital, Amsterdam UMC, Paediatric Gastroenterology, University of Amsterdam, Meibergdreef 9, 1105AZ, Amsterdam, The Netherlands
| | - Samuel Stafrace
- Division of Body imaging, Department of Diagnostic Imaging, Sidra Medicine and Weill Cornell Medicine, Doha, Qatar
| | - Owen J Arthurs
- Department of Radiology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK.,NIHR Great Ormond Street Biomedical Research Centre, London, UK
| | - Rick R van Rijn
- Amsterdam UMC, Radiology, University of Amsterdam, Amsterdam, The Netherlands
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Shelmerdine SC, Sebire NJ, Arthurs OJ. Three-dimensional versus two-dimensional postmortem ultrasound: feasibility in perinatal death investigation. Pediatr Radiol 2021; 51:1259-1266. [PMID: 33674890 DOI: 10.1007/s00247-020-04934-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 08/29/2020] [Accepted: 12/14/2020] [Indexed: 11/26/2022]
Abstract
Three- and four-dimensional US techniques in antenatal screening are commonplace, but they are not routinely used for perinatal postmortem US. In this technical innovation, we performed both two-dimensional (2-D) and three-dimensional (3-D) postmortem US on 11 foetuses (mean gestation: 23 weeks; range: 15-32 weeks) to determine whether there was any benefit in 3-D over conventional 2-D methods. In one case of osteogenesis imperfecta, both 2-D and 3-D US images were non-diagnostic because of small foetal size. Of the remaining 10 foetuses, 7 were normal at imaging and autopsy, and 3 had abnormalities detected on both 2-D and 3-D US. There were no false-positive diagnoses by 2-D or 3-D US. Whilst 3-D postmortem US was a feasible technique, it did not provide additional information over 2-D US. Routine 3-D postmortem US cannot therefore be routinely recommended based on our findings.
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Affiliation(s)
- Susan C Shelmerdine
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London, WC1N 3JH, UK.
- UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, UK.
- Great Ormond Street Hospital NIHR Biomedical Research Centre, London, UK.
| | - Neil J Sebire
- UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, UK
- Great Ormond Street Hospital NIHR Biomedical Research Centre, London, UK
- Department of Histopathology, Great Ormond Street Hospital for Children, London, UK
| | - Owen J Arthurs
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London, WC1N 3JH, UK
- UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, UK
- Great Ormond Street Hospital NIHR Biomedical Research Centre, London, UK
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Simcock IC, Shelmerdine SC, Hutchinson JC, Sebire NJ, Arthurs OJ. Human fetal whole-body postmortem microfocus computed tomographic imaging. Nat Protoc 2021; 16:2594-2614. [PMID: 33854254 DOI: 10.1038/s41596-021-00512-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 01/05/2021] [Indexed: 02/02/2023]
Abstract
Perinatal autopsy is the standard method for investigating fetal death; however, it requires dissection of the fetus. Human fetal microfocus computed tomography (micro-CT) provides a generally more acceptable and less invasive imaging alternative for bereaved parents to determine the cause of early pregnancy loss compared with conventional autopsy techniques. In this protocol, we describe the four main stages required to image fetuses using micro-CT. Preparation of the fetus includes staining with the contrast agent potassium triiodide and takes 3-19 d, depending on the size of the fetus and the time taken to obtain consent for the procedure. Setup for imaging requires appropriate positioning of the fetus and takes 1 h. The actual imaging takes, on average, 2 h 40 min and involves initial test scans followed by high-definition diagnostic scans. Postimaging, 3 d are required to postprocess the fetus, including removal of the stain, and also to undertake artifact recognition and data transfer. This procedure produces high-resolution isotropic datasets, allowing for radio-pathological interpretations to be made and long-term digital archiving for re-review and data sharing, where required. The protocol can be undertaken following appropriate training, which includes both the use of micro-CT techniques and handling of postmortem tissue.
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Affiliation(s)
- Ian C Simcock
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London, UK.,UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, UK.,NIHR Great Ormond Street Hospital Biomedical Research Centre, London, UK
| | - Susan C Shelmerdine
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London, UK.,UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, UK.,NIHR Great Ormond Street Hospital Biomedical Research Centre, London, UK
| | - J Ciaran Hutchinson
- UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, UK.,NIHR Great Ormond Street Hospital Biomedical Research Centre, London, UK.,Department of Histopathology, Great Ormond Street Hospital for Children, London, UK
| | - Neil J Sebire
- UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, UK.,NIHR Great Ormond Street Hospital Biomedical Research Centre, London, UK.,Department of Histopathology, Great Ormond Street Hospital for Children, London, UK
| | - Owen J Arthurs
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London, UK. .,UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, UK. .,NIHR Great Ormond Street Hospital Biomedical Research Centre, London, UK.
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35
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Rowbotham SK, Blumenthal R, Delabarde T, Legrand L, van der Walt E, Sutherland T, Lockhat Z, Arthurs OJ. An evaluation of the differences in paediatric skeletal trauma between fatal simple short falls and physical abuse blunt impact loads: An international multicentre pilot study. Forensic Sci Int 2021; 323:110788. [PMID: 33915490 DOI: 10.1016/j.forsciint.2021.110788] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 03/13/2021] [Accepted: 04/07/2021] [Indexed: 11/15/2022]
Abstract
In cases where a deceased child exhibits trauma as a result of a physical abuse blunt impact load, a parent/caregiver may provide a simple short fall (SSF) as the justification for that trauma. The skeletal fractures remain difficult to differentiate between a SSF and physical abuse however, as both are the result of a blunt impact load, and are therefore biomechanically alike, and the rare nature of these fatalities means only anecdotal research has been available to validate such claims. The aim of this pilot study was to investigate if there may be differences in the skeletal fracture patterns and types resulting from SSFs compared with those resulting from physical abuse blunt impacts. Paediatric (<10 years) cases of fatal SSFs (≤1.5 m) and physical abuse were collected from the Victorian Institute of Forensic Medicine (Australia), Institut Médico-Légal de Paris (France), University of Pretoria (South Africa) and Great Ormond Street Hospital (England). For each case the intrinsic and extrinsic variables were recorded from medico-legal reports and skeletal trauma was documented using post-mortem computed tomography scans and/or skeletal surveys. Three SSFs and 18 physical abuse cases were identified. Of the SSF cases, two exhibited fractures; both of which were simple linear neurocranial fractures. Comparatively, 12 of the physical abuse cases exhibited fractures and these were distributed across the skeleton; 58% located only in the skull, 17% only in the post-cranial and 25% located in both. Skull fracture types were single linear, multiple linear and comminuted. This pilot study suggests, anecdotally, there may be differences in the fracture patterns and types between blunt impact loads resulting from a SSF and physical abuse. This data will form the foundation of the Registry of Paediatric Fatal Fractures (RPFF) which, with further multicentre contributions, would allow this finding to be validated.
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Affiliation(s)
- Samantha K Rowbotham
- Victorian Institute of Forensic Medicine, 65 Kavanagh St, Southbank, Victoria 3006, Australia; Department of Forensic Medicine, Monash University, 65 Kavanagh St, Southbank, Victoria 3006, Australia.
| | - Ryan Blumenthal
- Department of Forensic Medicine, University of Pretoria, Pathology Building, 5 Bophelo Rd, Prinshof Campus, 0084, South Africa
| | - Tania Delabarde
- Institut Médico-Légal de Paris, 2 Voie Mazas, 75012 Paris, France
| | - Laurence Legrand
- Université de Paris, INSERM U1266, Service d'Imagerie Morphologique et Fonctionnelle, GHU Paris Psychiatrie et Neurosciences, Centre Hospitalier Sainte-Anne, 1 Rue Cabanis, 75674 Paris Cedex 14, France
| | - Elizabeth van der Walt
- Department of Radiology, University of Pretoria, Steve Biko Academic Hospital, Malherbe St, Riviera, Pretoria 0001, South Africa
| | - Tom Sutherland
- St Vincent's Hospital, 9 Princes St, Fitzroy, Victoria 3065, Australia; Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Gratton St, Melbourne 3010, Australia; Victorian Institute of Forensic Medicine, 65 Kavanagh St, Southbank, Victoria 3006, Australia
| | - Zarina Lockhat
- Department of Radiology, University of Pretoria, Steve Biko Academic Hospital, Malherbe St, Riviera, Pretoria 0001, South Africa
| | - Owen J Arthurs
- NIHR Great Ormond Street Hospital Biomedical Research Centre, London WC1N 3JH, United Kingdom; UCL Great Ormond Street Institute of Child Health, 30 Guilford Street, London WC1N 1EH, United Kingdom
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Abstract
PURPOSE OF REVIEW Uptake of perinatal autopsy has declined in the West over the past 30 years, largely because of reduced parental acceptance of a traditional invasive autopsy. Several studies have recently investigated the decline to identify the key factors and how they may be mitigated. RECENT FINDINGS Three main themes were identified that have been found to improve uptake of perinatal autopsy: improved communication, in particular ensuring the consent process was conducted as a conversation with time spent talking through the procedure and allowing time for questions; health professional training to ensure staff discussing autopsy with parents have adequate understanding of the procedure and are able to convey confidence and empathy; and availability of less invasive autopsy, including noninvasive as well as minimally invasive options. These should be offered alongside standard autopsy, which some parents may still prefer. SUMMARY This review highlights that the discussions that take place, and the options that are available to parents, can profoundly impact whether or not they consent to autopsy investigation. Further research should focus on the impact of offering less invasive options as well as evaluating the training and support materials that have recently been developed.
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Affiliation(s)
- Celine Lewis
- Population, Policy and Practice, UCL Great Ormond Street Institute of Child Health
- North Thames Genomic Laboratory Hub, Great Ormond Street NHS Foundation Trust
| | - Ian C Simcock
- Department of Clinical Radiology, Great Ormond Street Hospital for Children
- UCL Great Ormond Street Institute of Child Health
- National Institute for Health Research Biomedical Research Centre, Great Ormond Street Hospital, London, United Kingdom
| | - Owen J Arthurs
- Department of Clinical Radiology, Great Ormond Street Hospital for Children
- UCL Great Ormond Street Institute of Child Health
- National Institute for Health Research Biomedical Research Centre, Great Ormond Street Hospital, London, United Kingdom
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Shelmerdine SC, Sebire NJ, Calder AD, Arthurs OJ. Three-dimensional cinematic rendering of fetal skeletal dysplasia using postmortem computed tomography. Ultrasound Obstet Gynecol 2021; 57:659-660. [PMID: 33038273 DOI: 10.1002/uog.23140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 09/25/2020] [Indexed: 06/11/2023]
Affiliation(s)
- S C Shelmerdine
- Department of Radiology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
- UCL Great Ormond Street Institute of Child Health, London, UK
| | - N J Sebire
- UCL Great Ormond Street Institute of Child Health, London, UK
- Department of Histopathology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - A D Calder
- Department of Radiology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - O J Arthurs
- Department of Radiology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
- UCL Great Ormond Street Institute of Child Health, London, UK
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38
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Byrne M, Aughwane R, James JL, Hutchinson JC, Arthurs OJ, Sebire NJ, Ourselin S, David AL, Melbourne A, Clark AR. Structure-function relationships in the feto-placental circulation from in silico interpretation of micro-CT vascular structures. J Theor Biol 2021; 517:110630. [PMID: 33607145 DOI: 10.1016/j.jtbi.2021.110630] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 01/28/2021] [Accepted: 02/08/2021] [Indexed: 10/22/2022]
Abstract
A well-functioning placenta is critical for healthy fetal development, as the placenta brings fetal blood in close contact with nutrient rich maternal blood, enabling exchange of nutrients and waste between mother and fetus. The feto-placental circulation forms a complex branching structure, providing blood to fetal capillaries, which must receive sufficient blood flow to ensure effective exchange, but at a low enough pressure to prevent damage to placental circulatory structures. The branching structure of the feto-placental circulation is known to be altered in complications such as fetal growth restriction, and the presence of regions of vascular dysfunction (such as hypovascularity or thrombosis) are proposed to elevate risk of placental pathology. Here we present a methodology to combine micro-computed tomography and computational model-based analysis of the branching structure of the feto-placental circulation in ex vivo placentae from normal term pregnancies. We analyse how vascular structure relates to function in this key organ of pregnancy; demonstrating that there is a 'resilience' to placental vascular structure-function relationships. We find that placentae with variable chorionic vascular structures, both with and without a Hyrtl's anastomosis between the umbilical arteries, and those with multiple regions of poorly vascularised tissue are able to function with a normal vascular resistance. Our models also predict that by progressively introducing local heterogeneity in placental vascular structure, large increases in feto-placental vascular resistances are induced. This suggests that localised heterogeneities in placental structure could potentially provide an indicator of increased risk of placental dysfunction.
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Affiliation(s)
- Monika Byrne
- Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand
| | - Rosalind Aughwane
- Department of Maternal Fetal Medicine, Prenatal Cell and Gene Therapy Group, Elizabeth Garrett Anderson Institute for Women's Health, University College London, London, WC1E 6HX, United Kingdom
| | - Joanna L James
- Department of Obstetrics and Gynaecology, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
| | - J Ciaran Hutchinson
- NIHR GOS Institute of Child Health Biomedical Research Centre, University College, London, United Kingdom; Department of Histopathology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom
| | - Owen J Arthurs
- NIHR GOS Institute of Child Health Biomedical Research Centre, University College, London, United Kingdom; Paediatric Radiology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom
| | - Neil J Sebire
- NIHR GOS Institute of Child Health Biomedical Research Centre, University College, London, United Kingdom; Department of Histopathology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom
| | - Sebastien Ourselin
- School of Biomedical Engineering and Imaging Sciences, Kings College London, United Kingdom
| | - Anna L David
- Department of Maternal Fetal Medicine, Prenatal Cell and Gene Therapy Group, Elizabeth Garrett Anderson Institute for Women's Health, University College London, London, WC1E 6HX, United Kingdom; NIHR University College London Hospitals Biomedical Research Centre, 149 Tottenham Court Road, London, W1T 7DN, United Kingdom
| | - Andrew Melbourne
- School of Biomedical Engineering and Imaging Sciences, Kings College London, United Kingdom
| | - Alys R Clark
- Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand.
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Whitby E, Offiah AC, Shelmerdine SC, van Rijn RR, Aertsen M, Klein WM, Perry D, Goergen SK, Abel C, Taranath A, Gascho D, Miller E, Arthurs OJ. Current state of perinatal postmortem magnetic resonance imaging: European Society of Paediatric Radiology questionnaire-based survey and recommendations. Pediatr Radiol 2021; 51:792-799. [PMID: 33367939 PMCID: PMC8055569 DOI: 10.1007/s00247-020-04905-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 09/02/2020] [Accepted: 11/09/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND Postmortem magnetic resonance imaging (MRI) in perinatal and childhood deaths is increasingly used as a noninvasive adjunct or alternative to autopsy. Imaging protocols vary between centres and consensus guidelines do not exist. OBJECTIVE Our aim was to develop practical, standardised recommendations for perinatal postmortem MRI. MATERIALS AND METHODS Recommendations were based on the results of two surveys regarding local postmortem MRI practices sent electronically to all 14 members of the European Society of Paediatric Radiology (ESPR) Postmortem Imaging Task Force and 17 members of the International Society of Forensic Radiology and Imaging Task Force (25 different centres). RESULTS Overall, 11/14 (78.6%) respondents from different institutions perform postmortem MRI. All of these centres perform postmortem MRI for perinatal and neonatal deaths, but only 6/11 (54.5%) perform imaging in older children. CONCLUSION We propose a clinical standard for postmortem MRI sequences plus optional sequences for neuroimaging and cardiac anatomy depending on available scanning time and referral indications.
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Affiliation(s)
- Elspeth Whitby
- University of Sheffield and Sheffield Teaching Hospitals Foundation Trust, Jessop Wing, Tree Root Walk, Sheffield, S10 1SF, UK.
| | - Amaka C. Offiah
- Academic Unit of Child Health, University of Sheffield, Sheffield, UK ,Department of Radiology, Sheffield Children’s NHS Foundation Trust, University of Sheffield, Sheffield, UK
| | - Susan C. Shelmerdine
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London, UK ,UCL Great Ormond Street Institute of Child Health, London, UK
| | - Rick R. van Rijn
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Michael Aertsen
- Department of Radiology, University Hospitals KU Leuven, Leuven, Belgium
| | - Willemijn M. Klein
- Department of Radiology and Nuclear Medicine and Anatomy, Radboud University Medical Centre, Nijmegen, the Netherlands
| | - David Perry
- Radiology Department, National Women’s Health and Starship Children’s Hospital, Auckland City Hospital, Auckland, New Zealand
| | - Stacy K. Goergen
- Monash Imaging, Clayton, Victoria Australia ,School of Clinical Sciences, Monash University, Clayton, Victoria Australia
| | - Christian Abel
- Department of Medical Imaging, John Hunter Hospital, Newcastle, New South Wales Australia
| | - Ajay Taranath
- Department of Medical Imaging, Women’s and Children’s Hospital, North Adelaide, South Australia Australia ,University of Adelaide, Adelaide, South Australia Australia
| | - Dominic Gascho
- Zurich Institute of Forensic Medicine, University of Zurich, Zurich, Switzerland
| | - Elka Miller
- Department of Medical Imaging, Children’s Hospital of Eastern Ontario, University of Ottawa, Ottawa, Canada
| | - Owen J. Arthurs
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London, UK ,UCL Great Ormond Street Institute of Child Health, London, UK
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Shelmerdine SC, Simcock IC, Hutchinson JC, Guy A, Ashworth MT, Sebire NJ, Arthurs OJ. Postmortem microfocus computed tomography for noninvasive autopsies: experience in >250 human fetuses. Am J Obstet Gynecol 2021; 224:103.e1-103.e15. [PMID: 32682860 PMCID: PMC7805479 DOI: 10.1016/j.ajog.2020.07.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 07/02/2020] [Accepted: 07/14/2020] [Indexed: 12/16/2022]
Abstract
Background Noninvasive imaging autopsy alternatives for fetuses weighing <500 grams are limited. Microfocus computed tomography has been reported as a viable option in small case series with the potential to avoid an invasive autopsy. Implementation of postmortem microfocus computed tomography in a large cohort as part of routine clinical service has yet been unreported, and realistic “autopsy prevention rates” are unknown. Objective This study aimed to describe the range of abnormalities detectable on fetal microfocus computed tomography in a clinical setting and additional findings identified on the antenatal ultrasound and to estimate the invasive autopsy avoidance rate (ie, cases in which imaging was sufficient to deem autopsy unnecessary). Study Design A prospective observational case series of all fetuses referred for microfocus computed tomography imaging at a single institution was conducted for 3 years (2016–2019). Imaging was reported by 2 pediatric radiologists before autopsy, with “decision to proceed” based on the specialist perinatal pathologists’ judgment and parental consent. Agreement rates between microfocus computed tomography and antenatal ultrasound were evaluated, and where feasible, diagnostic accuracy for microfocus computed tomography was calculated using autopsy as a reference standard. Results A total of 268 fetuses were included (2–350 grams body weight; 11–24 weeks’ gestation), with cause for demise in 122 of 268 (45.5%). Of the 122 fetuses, 64 (52.5%) exhibited fetal anomalies. Although 221 of 268 (82.5%) fetuses had consent for invasive autopsy, only 29 of the 221 (13.1%) underwent this procedure, which implied an autopsy avoidance rate of 192 of 221 (86.9%). Complete agreement was present for all brain, thoracic, and abdominal pathologies, whereas sensitivity and specificity for cardiac anomalies were 66.7% and 91.7%, respectively. Microfocus computed tomography and antenatal ultrasound agreement was found in 219 of 266 cases (81.9%), with partial agreement in 21 of 266 (7.9%) and disagreement in 26 of 266 (10.5%), mostly because of additional cardiac, soft tissue, or genitourinary findings by microfocus computed tomography, which were not seen on the ultrasound. Conclusion Fetal microfocus computed tomography imaging is a viable and useful tool for imaging early gestational fetuses and can avoid the need for invasive autopsy. Confirmation of antenatal diagnoses is achieved in most cases, and additional anomalies may also be detected.
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Affiliation(s)
- Susan C Shelmerdine
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London, United Kingdom; UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, United Kingdom; National Institute for Health Research Biomedical Research Centre, Great Ormond Street Hospital, London, United Kingdom.
| | - Ian C Simcock
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London, United Kingdom; UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, United Kingdom; National Institute for Health Research Biomedical Research Centre, Great Ormond Street Hospital, London, United Kingdom
| | - John Ciaran Hutchinson
- Department of Paediatric Pathology, Great Ormond Street Hospital for Children, London, United Kingdom
| | - Anna Guy
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London, United Kingdom
| | - Michael T Ashworth
- Department of Paediatric Pathology, Great Ormond Street Hospital for Children, London, United Kingdom
| | - Neil J Sebire
- UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, United Kingdom; Department of Paediatric Pathology, Great Ormond Street Hospital for Children, London, United Kingdom; National Institute for Health Research Biomedical Research Centre, Great Ormond Street Hospital, London, United Kingdom
| | - Owen J Arthurs
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London, United Kingdom; UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, United Kingdom; National Institute for Health Research Biomedical Research Centre, Great Ormond Street Hospital, London, United Kingdom
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Davendralingam N, Sebire NJ, Arthurs OJ, Shelmerdine SC. Artificial intelligence in paediatric radiology: Future opportunities. Br J Radiol 2021; 94:20200975. [PMID: 32941736 PMCID: PMC7774693 DOI: 10.1259/bjr.20200975] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 09/04/2020] [Indexed: 12/13/2022] Open
Abstract
Artificial intelligence (AI) has received widespread and growing interest in healthcare, as a method to save time, cost and improve efficiencies. The high-performance statistics and diagnostic accuracies reported by using AI algorithms (with respect to predefined reference standards), particularly from image pattern recognition studies, have resulted in extensive applications proposed for clinical radiology, especially for enhanced image interpretation. Whilst certain sub-speciality areas in radiology, such as those relating to cancer screening, have received wide-spread attention in the media and scientific community, children's imaging has been hitherto neglected.In this article, we discuss a variety of possible 'use cases' in paediatric radiology from a patient pathway perspective where AI has either been implemented or shown early-stage feasibility, while also taking inspiration from the adult literature to propose potential areas for future development. We aim to demonstrate how a 'future, enhanced paediatric radiology service' could operate and to stimulate further discussion with avenues for research.
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Affiliation(s)
- Natasha Davendralingam
- Department of Radiology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
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Frauenfelder C, Shelmerdine SC, Simcock IC, Hall A, Hutchinson JC, Ashworth MT, Arthurs OJ, Butler CR. Micro-CT Imaging of Pediatric Thyroglossal Duct Cysts: A Prospective Case Series. Front Pediatr 2021; 9:746010. [PMID: 34557462 PMCID: PMC8453197 DOI: 10.3389/fped.2021.746010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 08/16/2021] [Indexed: 12/18/2022] Open
Abstract
Objectives: To determine the feasibility of micro-CT as a high-resolution 3D imaging tool for thyroglossal duct cysts and to evaluate its role augmenting traditional histopathological examination of resected specimens. Methods: A single centre, prospective case series of consecutive children undergoing excision of a thyroglossal duct cyst was performed at a quaternary paediatric referral hospital in the United Kingdom. Consecutive children listed for excision of a thyroglossal duct cyst whose parents agreed to participate were included and there were no exclusion criteria. Results: Surgically excised thyroglossal duct cyst or remnant specimens from five patients (two males, three females) were examined using micro-CT alongside traditional histopathological examination. In all cases, micro-CT imaging was able to demonstrate 3D imaging datasets of the specimens successfully and direct radio-pathological comparisons were made (Figures 1-5, Supplementary Video 1). Conclusions: The study has shown the feasibility and utility of post-operative micro-CT imaging of thyroglossal duct cysts specimens as a visual aid to traditional histopathological examination. It better informs the pathological specimen sectioning using multi-planar reconstruction and volume rendering tools without tissue destruction. In the complex, often arborised relationship between a thyroglossal duct cyst and the hyoid, micro-CT provides valuable image plane orientation and indicates proximity of the duct to the surgical margins. This is the first case series to explore the use of micro-CT imaging for pediatric thyroglossal duct specimens and it informs future work investigating the generalizability of micro-CT imaging methods for other lesions, particularly those from the head and neck region where precisely defining margins of excision may be challenging.
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Affiliation(s)
- Claire Frauenfelder
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom.,Discipline of Surgery, School of Medicine, University of Adelaide, Adelaide, SA, Australia
| | - Susan C Shelmerdine
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom.,UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, United Kingdom.,National Institute for Health Research Great Ormond Street Hospital Biomedical Research Centre, London, United Kingdom
| | - Ian C Simcock
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom.,UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, United Kingdom.,National Institute for Health Research Great Ormond Street Hospital Biomedical Research Centre, London, United Kingdom
| | - Andrew Hall
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom
| | - John Ciaran Hutchinson
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom.,UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, United Kingdom.,National Institute for Health Research Great Ormond Street Hospital Biomedical Research Centre, London, United Kingdom.,Department of Histopathology, St Thomas' Hospital, London, United Kingdom
| | - Michael T Ashworth
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom
| | - Owen J Arthurs
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom.,UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, United Kingdom.,National Institute for Health Research Great Ormond Street Hospital Biomedical Research Centre, London, United Kingdom
| | - Colin R Butler
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom.,UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, United Kingdom
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van Rijn RR, Stafrace S, Arthurs OJ, Rosendahl K. Non-radiologist-performed point-of-care ultrasonography in paediatrics - European Society of Paediatric Radiology position paper. Pediatr Radiol 2021; 51:161-167. [PMID: 33211186 PMCID: PMC7796864 DOI: 10.1007/s00247-020-04843-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 07/07/2020] [Accepted: 09/07/2020] [Indexed: 12/22/2022]
Abstract
Non-radiologist point-of-care ultrasonography (US) is increasingly implemented in paediatric care because it is believed to facilitate a timely diagnosis, such as in ascites or dilated renal pelvicalyceal systems, and can be used to guide interventional procedures. To date, all policy statements have been published by non-radiologic societies. The European Society of Paediatric Radiology hereby issues a position statement on paediatric non-radiologist point-of-care US from the point of view of those leading on children's imaging, i.e. paediatric radiologists. In this position statement, we will address the boundaries, education, credentialing, quality control, reporting and storage of images in paediatric practice.
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Affiliation(s)
- Rick R van Rijn
- Department of Radiology and Nuclear Medicine, Emma Children's Hospital-Amsterdam UMC, University of Amsterdamn, Meibergdreef 9, 1105 AZ, Amsterdam Zuid-Oost, the Netherlands.
| | - Samuel Stafrace
- Department of Diagnostic Imaging, Sidra Medicine, Doha, Qatar
- Weill Cornell Medicine, Doha, Qatar
| | - Owen J Arthurs
- Great Ormond Street Hospital for Children, NHS Foundation Trust, London, UK
- UCL GOS Institute of Child Health, London, UK
- NIHR Great Ormond Street Hospital Biomedical Research Centre, London, UK
| | - Karen Rosendahl
- Department of Radiology, University Hospital of North Norway, Tromsø, Norway
- The Arctic University of Norway, Tromsø, Norway
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44
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Novo Matos J, Garcia-Canadilla P, Simcock IC, Hutchinson JC, Dobromylskyj M, Guy A, Arthurs OJ, Cook AC, Luis Fuentes V. Micro-computed tomography (micro-CT) for the assessment of myocardial disarray, fibrosis and ventricular mass in a feline model of hypertrophic cardiomyopathy. Sci Rep 2020; 10:20169. [PMID: 33214588 PMCID: PMC7678873 DOI: 10.1038/s41598-020-76809-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 11/02/2020] [Indexed: 01/15/2023] Open
Abstract
Micro-computed tomography (micro-CT) is a high-resolution imaging modality that provides accurate tissue characterization. Hypertrophic cardiomyopathy (HCM) occurs as a spontaneous disease in cats, and is characterized by myocardial hypertrophy, disarray and fibrosis, as in humans. While hypertrophy/mass (LVM) can be objectively measured, fibrosis and myocyte disarray are difficult to assess. We evaluated the accuracy of micro-CT for detection and quantification of myocardial disarray and fibrosis by direct comparison with histopathology. 29 cat hearts (12 normal and 17 HCM hearts) underwent micro-CT and pathologic examination. Myocyte orientation was assessed using structure tensor analysis by determination of helical angle (HA), fractional anisotropy (FA) and myocardial disarray index (MDI). Fibrosis was segmented and quantified based on comparison of gray-scale values in normal and fibrotic myocardium. LVM was obtained by determining myocardial volume. Myocardial segments with low FA, low MDI and disruption of normal HA transmural profile on micro-CT were associated with myocardial disarray on histopathology. FA was consistently lower in HCM than normal hearts. Assessment of fibrosis on micro-CT closely matched the histopathologic evaluation. LVM determined by micro-CT was higher in HCM than normal hearts. Micro-CT can be used to detect and quantify myocardial disarray and fibrosis and determine myocardial mass in HCM.
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Affiliation(s)
- Jose Novo Matos
- Clinical Sciences and Services, Royal Veterinary College, London, UK.
| | - Patricia Garcia-Canadilla
- Institut D'Investigacions Biomèdiques August Pi I Sunyer, Barcelona, Spain.,Institute of Cardiovascular Science, University College London, London, UK
| | - Ian C Simcock
- Department of Radiology, Great Ormond Street Hospital for Children, NHS Foundation Trust, London, UK.,National Institute for Health Research Great Ormond Street Hospital Biomedical Research Centre, London, UK
| | - J Ciaran Hutchinson
- Department of Histopathology, Great Ormond Street Hospital for Children, NHS Foundation Trust, London, UK
| | | | - Anna Guy
- Department of Radiology, Great Ormond Street Hospital for Children, NHS Foundation Trust, London, UK
| | - Owen J Arthurs
- Department of Radiology, Great Ormond Street Hospital for Children, NHS Foundation Trust, London, UK.,National Institute for Health Research Great Ormond Street Hospital Biomedical Research Centre, London, UK
| | - Andrew C Cook
- Institute of Cardiovascular Science, University College London, London, UK
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45
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Novo Matos J, Garcia-Canadilla P, Simcock IC, Hutchinson JC, Dobromylskyj M, Guy A, Arthurs OJ, Cook AC, Luis Fuentes V. Micro-computed tomography (micro-CT) for the assessment of myocardial disarray, fibrosis and ventricular mass in a feline model of hypertrophic cardiomyopathy. Sci Rep 2020. [PMID: 33214588 DOI: 10.1038/s41598-020-76809-5.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Micro-computed tomography (micro-CT) is a high-resolution imaging modality that provides accurate tissue characterization. Hypertrophic cardiomyopathy (HCM) occurs as a spontaneous disease in cats, and is characterized by myocardial hypertrophy, disarray and fibrosis, as in humans. While hypertrophy/mass (LVM) can be objectively measured, fibrosis and myocyte disarray are difficult to assess. We evaluated the accuracy of micro-CT for detection and quantification of myocardial disarray and fibrosis by direct comparison with histopathology. 29 cat hearts (12 normal and 17 HCM hearts) underwent micro-CT and pathologic examination. Myocyte orientation was assessed using structure tensor analysis by determination of helical angle (HA), fractional anisotropy (FA) and myocardial disarray index (MDI). Fibrosis was segmented and quantified based on comparison of gray-scale values in normal and fibrotic myocardium. LVM was obtained by determining myocardial volume. Myocardial segments with low FA, low MDI and disruption of normal HA transmural profile on micro-CT were associated with myocardial disarray on histopathology. FA was consistently lower in HCM than normal hearts. Assessment of fibrosis on micro-CT closely matched the histopathologic evaluation. LVM determined by micro-CT was higher in HCM than normal hearts. Micro-CT can be used to detect and quantify myocardial disarray and fibrosis and determine myocardial mass in HCM.
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Affiliation(s)
- Jose Novo Matos
- Clinical Sciences and Services, Royal Veterinary College, London, UK.
| | - Patricia Garcia-Canadilla
- Institut D'Investigacions Biomèdiques August Pi I Sunyer, Barcelona, Spain.,Institute of Cardiovascular Science, University College London, London, UK
| | - Ian C Simcock
- Department of Radiology, Great Ormond Street Hospital for Children, NHS Foundation Trust, London, UK.,National Institute for Health Research Great Ormond Street Hospital Biomedical Research Centre, London, UK
| | - J Ciaran Hutchinson
- Department of Histopathology, Great Ormond Street Hospital for Children, NHS Foundation Trust, London, UK
| | | | - Anna Guy
- Department of Radiology, Great Ormond Street Hospital for Children, NHS Foundation Trust, London, UK
| | - Owen J Arthurs
- Department of Radiology, Great Ormond Street Hospital for Children, NHS Foundation Trust, London, UK.,National Institute for Health Research Great Ormond Street Hospital Biomedical Research Centre, London, UK
| | - Andrew C Cook
- Institute of Cardiovascular Science, University College London, London, UK
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Lewis C, Hutchinson JC, Riddington M, Hill M, Arthurs OJ, Fisher J, Wade A, Doré CJ, Chitty LS, Sebire NJ. Minimally invasive autopsy for fetuses and children based on a combination of post-mortem MRI and endoscopic examination: a feasibility study. Health Technol Assess 2020; 23:1-104. [PMID: 31461397 DOI: 10.3310/hta23460] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Less invasive perinatal and paediatric autopsy methods, such as imaging alongside targeted endoscopy and organ biopsy, may address declining consent rates for traditional autopsy, but their acceptability and accuracy are not known. OBJECTIVES The aims of this study were to provide empirical data on the acceptability and likely uptake for different types of autopsy among key stakeholders (study 1); and to analyse existing autopsy data sources to provide estimates of the potential efficacy of less invasive autopsy (LIA) and its projected utility in clinical practice (study 2). REVIEW METHODS Study 1: this was a mixed-methods study. Parents were involved in research design and interpretation of findings. Substudy 1: a cross-sectional survey of 859 parents who had experienced miscarriage, termination of pregnancy for fetal anomaly, stillbirth, infant or child death, and interviews with 20 responders. Substudy 2: interviews with 25 health professionals and four coroners. Substudy 3: interviews with 16 religious leaders and eight focus groups, with 76 members of the Muslim and Jewish community. Study 2: a retrospective analysis of national data in addition to detailed information from an existing in-house autopsy database of > 5000 clinical cases that had undergone standard autopsy to determine the proportion of cases by clinical indication group for which tissue sampling of specific internal organs significantly contributed to the diagnosis. RESULTS Substudy 1: 91% of participants indicated that they would consent to some form of LIA, 54% would consent to standard autopsy, 74% to minimally invasive autopsy (MIA) and 77% to non-invasive autopsy (NIA). Substudy 2: participants viewed LIA as a positive development, but had concerns around the limitations of the technology and de-skilling the workforce. Cost implications, skills and training requirements were identified as implementation challenges. Substudy 3: religious leaders agreed that NIA was religiously permissible, but MIA was considered less acceptable. Community members indicated that they might consent to NIA if the body could be returned for burial within 24 hours. Study 2: in 5-10% of cases of sudden unexplained death in childhood and sudden unexplained death in infants, the final cause of death is determined by routine histological sampling of macroscopically normal organs, predominantly the heart and lungs, and in this group routine histological sampling therefore remains an important aspect of investigation. In contrast, routine histological examination of macroscopically normal organs rarely (< 0.5%) provides the cause of death in fetal cases, making LIA and NIA approaches potentially highly applicable. LIMITATIONS A key limitation of the empirical research is that it is hypothetical. Further research is required to determine actual uptake. Furthermore, because of the retrospective nature of the autopsy data set, findings regarding the likely contribution of organ sampling to final diagnosis are based on extrapolation of findings from historical autopsies, and prospective data collection is required to validate the conclusions. CONCLUSIONS LIA is viable and acceptable (except for unexplained deaths), and likely to increase uptake. Further health economic, performance and implementation studies are required to determine the optimal service configuration required to offer this as routine clinical care. FUNDING The National Institute for Health Research Health Technology Assessment programme.
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Affiliation(s)
- Celine Lewis
- North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK.,Genetics and Genomic Medicine, University College London Great Ormond Street Institute of Child Health, London, UK
| | - John C Hutchinson
- Department of Histopathology, Great Ormond Street Hospital for Children NHS Foundation Trust and Institute of Child Health/University College London, London, UK
| | - Megan Riddington
- Department of Psychological Services, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - Melissa Hill
- North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK.,Genetics and Genomic Medicine, University College London Great Ormond Street Institute of Child Health, London, UK
| | - Owen J Arthurs
- Department of Radiology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | | | - Angie Wade
- Institute of Child Health; Population, Policy and Practice, University College London, London, UK
| | - Caroline J Doré
- Comprehensive Clinical Trials Unit, University College London, London, UK
| | - Lyn S Chitty
- North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK.,Genetics and Genomic Medicine, University College London Great Ormond Street Institute of Child Health, London, UK
| | - Neil J Sebire
- Department of Histopathology, Great Ormond Street Hospital for Children NHS Foundation Trust and Institute of Child Health/University College London, London, UK
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Raissaki M, Shelmerdine SC, Damasio MB, Toso S, Kvist O, Lovrenski J, Hirsch FW, Görkem SB, Paterson A, Arthurs OJ, Rossi A, van Schuppen J, Petit P, Argyropoulou MI, Offiah AC, Rosendahl K, Caro-Domínguez P. Management strategies for children with COVID-19: ESPR practical recommendations. Pediatr Radiol 2020; 50:1313-1323. [PMID: 32621013 PMCID: PMC7332738 DOI: 10.1007/s00247-020-04749-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 04/18/2020] [Accepted: 05/12/2020] [Indexed: 01/08/2023]
Abstract
During the outbreak of the COVID-19 pandemic, guidelines have been issued by international, national and local authorities to address management and the need for preparedness. Children with COVID-19 differ from adults in that they are less often and less severely affected. Additional precautions required in the management of children address their increased radiosensitivity, need for accompanying carers, and methods for dealing with children in a mixed adult-paediatric institution. In this guidance document, our aim is to define a pragmatic strategy for imaging children with an emphasis on proven or suspected COVID-19 cases. Children suspected of COVID-19 should not be imaged routinely. Imaging should be performed only when expected to alter patient management, depending on symptoms, preexisting conditions and clinical evolution. In order to prevent disease transmission, it is important to manage the inpatient caseload effectively by triaging children and carers outside the hospital, re-scheduling nonurgent elective procedures and managing symptomatic children and carers as COVID-19 positive until proven otherwise. Within the imaging department one should consider conducting portable examinations with COVID-19 machines or arranging dedicated COVID-19 paediatric imaging sessions and performing routine nasopharyngeal swab testing before imaging under general anaesthesia. Finally, regular personal hygiene, appropriate usage of personal protective equipment, awareness of which procedures are considered aerosol generating and information on how to best disinfect imaging machinery after examinations should be highlighted to all staff members.
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Affiliation(s)
- Maria Raissaki
- Department of Radiology, University Hospital of Heraklion, University of Crete, Crete, Greece
| | - Susan C Shelmerdine
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London, WC1N 3JH, UK.
- UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, UK.
- NIHR Great Ormond Street Biomedical Research Centre, London, UK.
| | | | - Seema Toso
- Department of Diagnostics, Geneva Children's Hospitals, Geneva, Switzerland
| | - Ola Kvist
- Department of Pediatric Radiology, Karolinska University Hospital, Stockholm, Sweden
| | - Jovan Lovrenski
- Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia
- Institute for Children and Adolescent Health Care of Vojvodina, Novi Sad, Serbia
| | | | - Süreyya Burcu Görkem
- Paediatric Radiology Department, Erciyes University School of Medicine, Children's Hospital, Kayseri, Turkey
| | - Anne Paterson
- Department of Radiology, Royal Belfast Hospital for Sick Children, Belfast, UK
| | - Owen J Arthurs
- Department of Clinical Radiology, Great Ormond Street Hospital for Children, London, WC1N 3JH, UK
- UCL Great Ormond Street Institute of Child Health, Great Ormond Street Hospital for Children, London, UK
- NIHR Great Ormond Street Biomedical Research Centre, London, UK
| | - Andrea Rossi
- Neuroradiology Unit, Istituto Giannina Gaslini, Genoa, Italy
- Department of Health Sciences (DISSAL), University of Genoa, Genoa, Italy
| | - Joost van Schuppen
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - Philippe Petit
- Service d'imagerie pédiatrique et prénatale, Aix Marseille University, Hôpital de La Timone-Enfants, Marseille, France
| | - Maria I Argyropoulou
- Department of Clinical Radiology and Imaging, Medical School, University Hospital of Ioannina, Ioannina, Greece
| | - Amaka C Offiah
- Academic Unit of Child Health, University of Sheffield, Sheffield, UK
- Department of Radiology, Sheffield Children's NHS Foundation Trust, Sheffield, UK
| | - Karen Rosendahl
- Department of Radiology, University Hospital of North Norway, Tromsø, Norway
- Department of Clinical Medicine, UiT the Arctic University of Norway, Tromsø, Norway
| | - Pablo Caro-Domínguez
- Unidad de Radiología Pediátrica, Servicio de Radiodiagnóstico, Hospital Universitario Virgen del Rocío, Sevilla, Spain
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Simcock IC, Hutchinson JC, Shelmerdine SC, Matos JN, Sebire NJ, Fuentes VL, Arthurs OJ. Investigation of optimal sample preparation conditions with potassium triiodide and optimal imaging settings for microfocus computed tomography of excised cat hearts. Am J Vet Res 2020; 81:326-333. [PMID: 32228254 DOI: 10.2460/ajvr.81.4.326] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To determine optimal sample preparation conditions with potassium triiodide (I2KI) and optimal imaging settings for microfocus CT (micro-CT) of excised cat hearts. SAMPLE 7 excised hearts (weight range, 10 to 17.6 g) obtained from healthy adult cats after euthanasia by IV injection of pentobarbital sodium. PROCEDURES Following excision, the hearts were preserved in 10% formaldehyde solution. Six hearts were immersed in 1.25% I2KI solution (n = 3) or 2.5% I2KI solution (3) for a 12-day period. Micro-CT images were acquired at time 0 (prior to iodination) then approximately every 24 and 48 hours thereafter to determine optimal sample preparation conditions (ie, immersion time and concentration of I2KI solution). Identified optimal conditions were then used to prepare the seventh heart for imaging; changes in voltage, current, exposure time, and gain on image quality were evaluated to determine optimal settings (ie, maximal signal-to-noise and contrast-to-noise ratios). Images were obtained at a voxel resolution of 30 μm. A detailed morphological assessment of the main cardiac structures of the seventh heart was then performed. RESULTS Immersion in 2.5% I2KI solution for 48 hours was optimal for sample preparation. The optimal imaging conditions included a tube voltage of 100 kV, current of 150 μA, and exposure time of 354 milliseconds; scan duration was 12 minutes. CONCLUSIONS AND CLINICAL RELEVANCE Results provided an optimal micro-CT imaging protocol for excised cat hearts prepared with I2KI solution that could serve as a basis for future studies of micro-CT for high resolution 3-D imaging of cat hearts.
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McDowell AR, Shelmerdine SC, Lorio S, Norman W, Jones R, Carmichael DW, Arthurs OJ. Multiparametric mapping in post-mortem perinatal MRI: a feasibility study. Br J Radiol 2020; 93:20190952. [PMID: 32330074 DOI: 10.1259/bjr.20190952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES To demonstrate feasibility of a 3 T multiparametric mapping (MPM) quantitative pipeline for perinatal post-mortem MR (PMMR) imaging. METHODS Whole body quantitative PMMR imaging was acquired in four cases, mean gestational age 34 weeks, range (29-38 weeks) on a 3 T Siemens Prisma scanner. A multicontrast protocol yielded proton density, T1 and magnetic transfer (MT) weighted multi-echo images obtained from variable flip angle (FA) 3D fast low angle single-shot (FLASH) acquisitions, radiofrequency transmit field map and one B0 field map alongside four MT weighted acquisitions with saturation pulses of 180, 220, 260 and 300 degrees were acquired, all at 1 mm isotropic resolution. RESULTS Whole body MPM was achievable in all four foetuses, with R1, R2*, PD and MT maps reconstructed from a single protocol. Multiparametric maps were of high quality and show good tissue contrast, especially the MT maps. CONCLUSION MPM is a feasible technique in a perinatal post-mortem setting, which may allow quantification of post-mortem change, prior to being evaluated in a clinical setting. ADVANCES IN KNOWLEDGE We have shown that the MPM sequence is feasible in PMMR imaging and shown the potential of MT imaging in this setting.
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Affiliation(s)
- Amy R McDowell
- UCL Great Ormond Street Institute of Child Health, London, UK
| | | | - Sara Lorio
- UCL Great Ormond Street Institute of Child Health, London, UK.,Wellcome EPSRC Centre for Medical EngineeringKCL, London, UK
| | - Wendy Norman
- UCL Great Ormond Street Institute of Child Health, London, UK.,NIHR UCL GOS Institute of Child Health Biomedical Research Centre, London, UK
| | - Rod Jones
- UCL Great Ormond Street Institute of Child Health, London, UK.,NIHR UCL GOS Institute of Child Health Biomedical Research Centre, London, UK
| | - David W Carmichael
- UCL Great Ormond Street Institute of Child Health, London, UK.,Wellcome EPSRC Centre for Medical EngineeringKCL, London, UK
| | - Owen J Arthurs
- RadiologyGreat Ormond Street Hospital NHS Foundation Trust, London, UK.,NIHR UCL GOS Institute of Child Health Biomedical Research Centre, London, UK
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Reid C, Arthurs OJ, Calder AD, Sebire NJ, Shelmerdine SC. The significance of internal calcifications on perinatal post-mortem radiographs. Clin Radiol 2020; 75:561.e25-561.e34. [PMID: 32252991 PMCID: PMC7296345 DOI: 10.1016/j.crad.2020.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 03/06/2020] [Indexed: 11/29/2022]
Abstract
AIM To determine whether the presence of internal calcifications on perinatal post-mortem skeletal surveys (PMSS) are associated with certain diagnoses of fetal loss. METHODS AND MATERIALS A 6-month retrospective, single-centre, cohort study was conducted on PMSS performed for perinatal death assessment. One reader re-reviewed all PMSS images for the presence and location of internal calcifications, and noted whether these were included within the original radiology report. Findings at autopsy were then reviewed independently by a second researcher and cause of fetal loss or main diagnosis recorded. Chi-squared tests were conducted to identify differences between those with and without internal calcifications at PMSS. RESULTS Two hundred and thirty perinatal deaths (mean gestational age 18 weeks; average 12–35 weeks) were included in the study, of which 42 (18.3%) demonstrated intra-abdominal calcifications, and 16/42 (38.1%) were mentioned in the radiology reports. Most calcifications were found to be within the lumen of the gastrointestinal tract, and in the left upper quadrant of the abdomen. There was no statistical difference between identifiable causes for fetal loss at autopsy in cases with and without calcification at PMSS (59.5% versus 58.5% respectively, p=0.904). Nevertheless, where calcification and a cause for fetal loss were found, the aetiology was more likely to be due a fetal rather than placental issue. CONCLUSION The presence of internal calcifications on PMSS was not associated with an increased likelihood of explainable fetal loss or particular diagnosis at autopsy. Fetal calcifications on post-mortem skeletal surveys are not significantly associated with causes of fetal loss. When present, internal calcifications were usually seen in lower gestational aged fetuses, intra-abdominal in location, with the majority being intraluminal. The majority of radiologists do not report internal fetal calcifications on radiographs, without significant consequences for final outcome at autopsy.
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Affiliation(s)
- C Reid
- Great Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UK
| | - O J Arthurs
- Great Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UK; UCL Great Ormond Street Institute of Child Health, London, UK; NIHR Great Ormond Street Hospital Biomedical Research Centre, London, UK
| | - A D Calder
- Great Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UK
| | - N J Sebire
- Great Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UK; UCL Great Ormond Street Institute of Child Health, London, UK; NIHR Great Ormond Street Hospital Biomedical Research Centre, London, UK
| | - S C Shelmerdine
- Great Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UK; UCL Great Ormond Street Institute of Child Health, London, UK.
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