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Alicandro G, Gramegna A, Bellino F, Sciarrabba SC, Lanfranchi C, Contarini M, Retucci M, Daccò V, Blasi F. Heterogeneity in response to Elexacaftor/Tezacaftor/Ivacaftor in people with cystic fibrosis. J Cyst Fibros 2024:S1569-1993(24)00057-2. [PMID: 38729849 DOI: 10.1016/j.jcf.2024.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 02/27/2024] [Accepted: 04/24/2024] [Indexed: 05/12/2024]
Abstract
BACKGROUND Highly effective modulators of the CFTR channel have been demonstrated to dramatically impact disease progression and outcome. However, real-world data indicates that the magnitude of the clinical benefit is not equal among all patients receiving the treatment. We aimed to assess the variability in treatment response (as defined by the 6-month change in sweat chloride concentration, forced expiratory volume in one second [ppFEV1], body mass index [BMI], and CF Questionnaire-Revised [CFQ-R] respiratory domain score) and identify potential predictors in a group of patients receiving Elexacaftor-Tezacaftor-Ivacaftor (ETI) triple combination therapy. METHODS This was a single-center, prospective cohort study enrolling adults with CF at a major center in Italy. We used linear regression models to identify a set of potential predictors (including CFTR genotype, sex, age, and baseline clinical characteristics) and estimate the variability in treatment response. RESULTS The study included 211 patients (median age: 29 years, range: 12-58). Median changes (10-90th percentile) from baseline were: - 56 mEq/L (-76; -27) for sweat chloride concentration, +14.5 points (2.5; 32.0) for ppFEV1, +0.33 standard deviation scores (-0.13; 1.05) for BMI and +17 points (0; 39) for the CFQ-R respiratory domain score. The selected predictors explained 23 % of the variability in sweat chloride concentration changes, 18 % of the variability in ppFEV1 changes, 39 % of the variability in BMI changes, and 65 % of the variability in CFQ-R changes. CONCLUSIONS This study highlights a high level of heterogeneity in treatment response to ETI, which can only be partially explained by the baseline characteristics of the disease.
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Affiliation(s)
- Gianfranco Alicandro
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy; Department of Paediatrics, Cystic Fibrosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Andrea Gramegna
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy; Respiratory Unit and Cystic Fibrosis Adult Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
| | - Federica Bellino
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy; Respiratory Unit and Cystic Fibrosis Adult Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Sathya Calogero Sciarrabba
- Department of Paediatrics, Cystic Fibrosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Chiara Lanfranchi
- Department of Paediatrics, Cystic Fibrosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Martina Contarini
- Respiratory Unit and Cystic Fibrosis Adult Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Mariangela Retucci
- Respiratory Unit and Cystic Fibrosis Adult Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Healthcare Professions Department, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Valeria Daccò
- Department of Paediatrics, Cystic Fibrosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Francesco Blasi
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy; Respiratory Unit and Cystic Fibrosis Adult Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
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West ME, Spielberg DR, Roach DJ, Willmering MM, Bdaiwi AS, Cleveland ZI, Woods JC. Short-term structural and functional changes after airway clearance therapy in cystic fibrosis. J Cyst Fibros 2023; 22:926-932. [PMID: 36740542 DOI: 10.1016/j.jcf.2023.01.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 01/10/2023] [Accepted: 01/30/2023] [Indexed: 02/07/2023]
Abstract
BACKGROUND Airway clearance therapy (ACT) with a high-frequency chest wall oscillation (HFCWO) vest is a common but time-consuming treatment. Its benefit to quality of life for cystic fibrosis (CF) patients is well established but has been questioned recently as new highly-effective modulator therapies begin to change the treatment landscape. 129Xe ventilation MRI has been shown to be very sensitive to lung obstruction in mild CF disease, making it an ideal tool to identify and quantify subtle, regional changes. METHODS 20 CF patients (ages 20.7 ± 5.1 years) refrained from performing ACT before arriving for a single-day visit. Multiple-breath washout (MBW), spirometry, Xe MRI, and ultrashort echo-time (UTE) MRI were obtained twice-before and after patients performed ACT using their prescribed HFCWO vests (average 4.7 ± 0.5 h). UTE MRIs were scored for structural abnormalities, and standard functional metrics were obtained from MBW, spirometry, and Xe MRI-FEV1,pp, LCI2.5, and VDPN4, respectively. RESULTS Spirometry and Xe MRI detected significant improvements in lung function post-ACT. 15/20 patients showed improvements from a baseline median of 92% FEV1,pp. Similarly, 16/20 patients showed improvements in Xe MRI from a baseline median of 15.2% VDPN4. Average individual changes were +2.6% in FEV1,pp and -1.3% in VDPN4, but without spatial correlations to easily-identifiable causative structural defects (e.g. mucus plugs or bronchiectasis) on UTE MRI. CONCLUSIONS Lung function improved after a single instance of HFCWO-vest ACT and was detectable by spirometry and Xe MRI. The only common structural abnormalities were mucus plugs, which corresponded to ventilation defects, but ventilation defects were often present without visible abnormalities.
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Affiliation(s)
- Michael E West
- Center for Pulmonary Imaging Research, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, United States; Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, United States
| | - David R Spielberg
- Division of Pulmonary Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago, 225 E. Chicago Ave, Chicago, Illinois, 60611, United States
| | - David J Roach
- Center for Pulmonary Imaging Research, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, United States; Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, United States
| | - Matthew M Willmering
- Center for Pulmonary Imaging Research, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, United States; Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, United States
| | - Abdullah S Bdaiwi
- Center for Pulmonary Imaging Research, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, United States; Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, United States; Department of Biomedical Engineering, University of Cincinnati, Cincinnati, OH, 45229, United States
| | - Zackary I Cleveland
- Center for Pulmonary Imaging Research, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, United States; Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, United States; Department of Biomedical Engineering, University of Cincinnati, Cincinnati, OH, 45229, United States; Department of Pediatrics, University of Cincinnati Medical Center, Cincinnati, OH, 45229, United States; Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, United States
| | - Jason C Woods
- Center for Pulmonary Imaging Research, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, United States; Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, United States; Department of Pediatrics, University of Cincinnati Medical Center, Cincinnati, OH, 45229, United States; Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, United States; Department of Physics, University of Cincinnati, Cincinnati, OH, 45229, United States.
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Ciet P, Booij R, Dijkshoorn M, van Straten M, Tiddens HAWM. Chest radiography and computed tomography imaging in cystic fibrosis: current challenges and new perspectives. Pediatr Radiol 2023; 53:649-659. [PMID: 36307546 PMCID: PMC10027794 DOI: 10.1007/s00247-022-05522-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 08/01/2022] [Accepted: 09/22/2022] [Indexed: 10/31/2022]
Abstract
Imaging plays a pivotal role in the noninvasive assessment of cystic fibrosis (CF)-related lung damage, which remains the main cause of morbidity and mortality in children with CF. The development of new imaging techniques has significantly changed clinical practice, and advances in therapies have posed diagnostic and monitoring challenges. The authors summarise these challenges and offer new perspectives in the use of imaging for children with CF for both clinicians and radiologists. This article focuses on chest radiography and CT, which are the two main radiologic techniques used in most cystic fibrosis centres. Advantages and disadvantages of radiography and CT for imaging in CF are described, with attention to new developments in these techniques, such as the use of artificial intelligence (AI) image analysis strategies to improve the sensitivity of radiography and CT and the introduction of the photon-counting detector CT scanner to increase spatial resolution at no dose expense.
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Affiliation(s)
- Pierluigi Ciet
- Radiology & Nuclear Medicine Department, Pediatric Radiology Section, Erasmus MC-Sophia Children's Hospital, Room Sb‑1650, Wytemaweg 80, 3015 CN, Rotterdam, South‑Holland, The Netherlands.
- Department of Paediatric Pulmonology and Allergology, Erasmus MC-Sophia Children's Hospital, Rotterdam, The Netherlands.
| | - Ronald Booij
- Radiology & Nuclear Medicine Department, Pediatric Radiology Section, Erasmus MC-Sophia Children's Hospital, Room Sb‑1650, Wytemaweg 80, 3015 CN, Rotterdam, South‑Holland, The Netherlands
| | - Marcel Dijkshoorn
- Radiology & Nuclear Medicine Department, Pediatric Radiology Section, Erasmus MC-Sophia Children's Hospital, Room Sb‑1650, Wytemaweg 80, 3015 CN, Rotterdam, South‑Holland, The Netherlands
| | - Marcel van Straten
- Department of Radiology & Nuclear Medicine, Erasmus MC, Dr. Molewaterplein 40, 3015 GD, Rotterdam, South-Holland, The Netherlands
| | - Harm A W M Tiddens
- Radiology & Nuclear Medicine Department, Pediatric Radiology Section, Erasmus MC-Sophia Children's Hospital, Room Sb‑1650, Wytemaweg 80, 3015 CN, Rotterdam, South‑Holland, The Netherlands
- Department of Paediatric Pulmonology and Allergology, Erasmus MC-Sophia Children's Hospital, Rotterdam, The Netherlands
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Britto CJ, Ratjen F, Clancy JP. Emerging Approaches to Monitor and Modify Care in the Era of Cystic Fibrosis Transmembrane Conductance Regulators. Clin Chest Med 2022; 43:631-646. [PMID: 36344071 DOI: 10.1016/j.ccm.2022.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
As we characterize the clinical benefits of highly effective modulator therapy (HEMT) in the cystic fibrosis (CF) population, our paradigm for treating and monitoring disease continues to evolve. More sensitive approaches are necessary to detect early disease and clinical progression. This article reviews evolving strategies to assess disease control and progression in the HEMT era. This article also explores developments in pulmonary function monitoring, advanced respiratory imaging, tools for the collection of patient-reported outcomes, and their application to profile individual responses, guide therapeutic decisions, and improve the quality of life of people with CF.
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Affiliation(s)
- Clemente J Britto
- Yale Adult Cystic Fibrosis Program, Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale University School of Medicine.
| | - Felix Ratjen
- Division of Respiratory Medicine, Translational Medicine, University of Toronto Hospital for Sick Children, 555 University Avenue, Toronto Ontario M5G 1X8, Canada
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Britto CJ, Taylor-Cousar JL. Cystic Fibrosis in the Era of Highly Effective CFTR Modulators. Clin Chest Med 2022; 43:xiii-xvi. [PMID: 36344084 DOI: 10.1016/j.ccm.2022.07.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Clemente J Britto
- Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, Yale University School of Medicine, 300 Cedar Street, TAC-S419, New Haven, CT 06520, USA.
| | - Jennifer L Taylor-Cousar
- Departments of Medicine and Pediatrics, Divisions of Pulmonary Sciences and Critical Care Medicine and Pediatric Pulmonology, University of Colorado, Anschutz Medical Campus, 1400 Jackson Street, J318, Denver, CO 80206, USA.
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Svedberg M, Imberg H, Gustafsson P, Brink M, Caisander H, Lindblad A. Chest X-rays are less sensitive than multiple breath washout examinations when it comes to detecting early cystic fibrosis lung disease. Acta Paediatr 2022; 111:1253-1260. [PMID: 35181935 PMCID: PMC9306859 DOI: 10.1111/apa.16302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 02/15/2022] [Accepted: 02/16/2022] [Indexed: 11/30/2022]
Abstract
AIM Annual chest X-ray is recommended as routine surveillance to track cystic fibrosis (CF) lung disease. The aim of this study was to investigate the clinical utility of chest X-rays to track CF lung disease. METHODS Children at Gothenburg's CF centre who underwent chest X-rays, multiple breath washouts and chest computed tomography examinations between 1996 and 2016 were included in the study. Chest X-rays were interpreted with Northern Score (NS). We compared NS to lung clearance index (LCI) and structural lung damage measured by computed tomography using a logistic regression model. RESULTS A total of 75 children were included over a median period of 13 years (range: 3.0-18.0 years). The proportion of children with abnormal NS was significantly lower than the proportion of abnormal LCI up to the age of 4 years (p < 0.05). A normal NS and a normal LCI at age 6 years were associated with a median (10-90th percentile) total airway disease of 1.8% (0.4-4.7%) and bronchiectasis of 0.2% (0.0-1.5%). CONCLUSION Chest X-rays were less sensitive than multiple breath washout examinations to detect early CF lung disease. The combined results from both methods can be used as an indicator to perform chest computed tomography less frequently.
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Affiliation(s)
- Marcus Svedberg
- Department of Pediatrics Institute of Clinical Science at The Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
- Department of Pediatrics Queen Silvia's Children Hospital Gothenburg Sweden
| | - Henrik Imberg
- Department of Mathematical Sciences Chalmers University of Technology and University of Gothenburg Gothenburg Sweden
- Statistiska Konsultgruppen Gothenburg Sweden
| | - Per Gustafsson
- Department of Pediatrics Institute of Clinical Science at The Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
- Department of Pediatrics Central Hospital Skoevde Sweden
| | - Mela Brink
- Department of Pediatric Radiology Queen Silvia's Children Hospital Gothenburg Sweden
| | - Håkan Caisander
- Department of Pediatric Radiology Queen Silvia's Children Hospital Gothenburg Sweden
| | - Anders Lindblad
- Department of Pediatrics Institute of Clinical Science at The Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
- Department of Pediatrics Queen Silvia's Children Hospital Gothenburg Sweden
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Ciet P, Bertolo S, Ros M, Casciaro R, Cipolli M, Colagrande S, Costa S, Galici V, Gramegna A, Lanza C, Lucca F, Macconi L, Majo F, Paciaroni A, Parisi GF, Rizzo F, Salamone I, Santangelo T, Scudeller L, Saba L, Tomà P, Morana G. State-of-the-art review of lung imaging in cystic fibrosis with recommendations for pulmonologists and radiologists from the "iMAging managEment of cySTic fibROsis" (MAESTRO) consortium. Eur Respir Rev 2022; 31:31/163/210173. [PMID: 35321929 DOI: 10.1183/16000617.0173-2021] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 12/20/2021] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVE Imaging represents an important noninvasive means to assess cystic fibrosis (CF) lung disease, which remains the main cause of morbidity and mortality in CF patients. While the development of new imaging techniques has revolutionised clinical practice, advances have posed diagnostic and monitoring challenges. The authors aim to summarise these challenges and make evidence-based recommendations regarding imaging assessment for both clinicians and radiologists. STUDY DESIGN A committee of 21 experts in CF from the 10 largest specialist centres in Italy was convened, including a radiologist and a pulmonologist from each centre, with the overall aim of developing clear and actionable recommendations for lung imaging in CF. An a priori threshold of at least 80% of the votes was required for acceptance of each statement of recommendation. RESULTS After a systematic review of the relevant literature, the committee convened to evaluate 167 articles. Following five RAND conferences, consensus statements were developed by an executive subcommittee. The entire consensus committee voted and approved 28 main statements. CONCLUSIONS There is a need for international guidelines regarding the appropriate timing and selection of imaging modality for patients with CF lung disease; timing and selection depends upon the clinical scenario, the patient's age, lung function and type of treatment. Despite its ubiquity, the use of the chest radiograph remains controversial. Both computed tomography and magnetic resonance imaging should be routinely used to monitor CF lung disease. Future studies should focus on imaging protocol harmonisation both for computed tomography and for magnetic resonance imaging. The introduction of artificial intelligence imaging analysis may further revolutionise clinical practice by providing fast and reliable quantitative outcomes to assess disease status. To date, there is no evidence supporting the use of lung ultrasound to monitor CF lung disease.
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Affiliation(s)
- Pierluigi Ciet
- Radiology and Nuclear Medicine Dept, Erasmus MC, Rotterdam, The Netherlands .,Pediatric Pulmonology and Allergology Dept, Erasmus MC, Sophia Children's Hospital, Rotterdam, The Netherlands.,Depts of Radiology and Medical Science, University of Cagliari, Cagliari, Italy
| | - Silvia Bertolo
- Radiology Dept, Ca'Foncello S. Maria Hospital, Treviso, Italy
| | - Mirco Ros
- Dept of Pediatrics, Ca'Foncello S. Maria Hospital, Treviso, Italy
| | - Rosaria Casciaro
- Dept of Pediatrics, IRCCS Institute "Giannina Gaslini", Cystic Fibrosis Centre, Genoa, Italy
| | - Marco Cipolli
- Regional Reference Cystic Fibrosis center, University hospital of Verona, Verona, Italy
| | - Stefano Colagrande
- Dept of Experimental and Clinical Biomedical Sciences, Radiodiagnostic Unit n. 2, University of Florence- Careggi Hospital, Florence, Italy
| | - Stefano Costa
- Dept of Pediatrics, Gaetano Martino Hospital, Messina, Italy
| | - Valeria Galici
- Cystic Fibrosis Centre, Dept of Paediatric Medicine, Anna Meyer Children's University Hospital, Florence, Italy
| | - Andrea Gramegna
- Respiratory Disease and Adult Cystic Fibrosis Centre, Internal Medicine Dept, IRCCS Ca' Granda, Milan, Italy.,Dept of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - Cecilia Lanza
- Radiology Dept, University Hospital Ospedali Riuniti, Ancona, Italy
| | - Francesca Lucca
- Regional Reference Cystic Fibrosis center, University hospital of Verona, Verona, Italy
| | - Letizia Macconi
- Radiology Dept, Tuscany Reference Cystic Fibrosis Centre, Meyer Children's Hospital, Florence, Italy
| | - Fabio Majo
- Dept of Pediatrics, IRCCS Bambino Gesù Children's Hospital, Rome, Italy
| | | | - Giuseppe Fabio Parisi
- Pediatric Pulmonology Unit, Dept of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Francesca Rizzo
- Radiology Dept, IRCCS Institute "Giannina Gaslini", Cystic Fibrosis Center, Genoa, Italy
| | | | - Teresa Santangelo
- Dept of Radiology, IRCCS Bambino Gesù Children's Hospital, Rome, Italy
| | - Luigia Scudeller
- Clinical Epidemiology, IRCCS Azienda Ospedaliera Universitaria di Bologna, Bologna, Italy
| | - Luca Saba
- Depts of Radiology and Medical Science, University of Cagliari, Cagliari, Italy
| | - Paolo Tomà
- Dept of Radiology, IRCCS Bambino Gesù Children's Hospital, Rome, Italy
| | - Giovanni Morana
- Radiology Dept, Ca'Foncello S. Maria Hospital, Treviso, Italy
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Moutafidis D, Gavra M, Golfinopoulos S, Kattamis A, Chrousos G, Kanaka-Gantenbein C, Kaditis AG. Low- and High-Attenuation Lung Volume in Quantitative Chest CT in Children without Lung Disease. CHILDREN (BASEL, SWITZERLAND) 2021; 8:children8121172. [PMID: 34943369 PMCID: PMC8700567 DOI: 10.3390/children8121172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 11/21/2021] [Accepted: 12/07/2021] [Indexed: 06/14/2023]
Abstract
In contrast to studies of adults with emphysema, application of fixed thresholds to determine low- and high-attenuation areas (air-trapping and parenchymal lung disease) in pediatric quantitative chest CT is problematic. We aimed to assess age effects on: (i) mean lung attenuation (full inspiration); and (ii) low and high attenuation thresholds (LAT and HAT) defined as mean attenuation and 1 SD below and above mean, respectively. Chest CTs from children aged 6-17 years without abnormalities were retrieved, and histograms of attenuation coefficients were analyzed. Eighty examinations were included. Inverse functions described relationships between age and mean lung attenuation, LAT or HAT (p < 0.0001). Predicted value for LAT decreased from -846 HU in 6-year-old to -950 HU in 13- to 17-year-old subjects (cut-off value for assessing emphysema in adults). %TLCCT with low attenuation correlated with age (rs = -0.31; p = 0.005) and was <5% for 9-17-year-old subjects. Inverse associations were demonstrated between: (i) %TLCCT with high attenuation and age (r2 = 0.49; p < 0.0001); (ii) %TLCCT with low attenuation and TLCCT (r2 = 0.47; p < 0.0001); (iii) %TLCCT with high attenuation and TLCCT (r2 = 0.76; p < 0.0001). In conclusion, quantitative analysis of chest CTs from children without lung disease can be used to define age-specific LAT and HAT for evaluation of pediatric lung disease severity.
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Affiliation(s)
- Dimitrios Moutafidis
- Division of Pediatric Pulmonology, First Department of Pediatrics, National and Kapodistrian University of Athens School of Medicine & Agia Sofia Children’s Hospital, 115 27 Athens, Greece; (D.M.); (C.K.-G.)
| | - Maria Gavra
- CT, MRI & PET/CT Department, Agia Sofia Children’s Hospital, 115 27 Athens, Greece; (M.G.); (S.G.)
| | - Sotirios Golfinopoulos
- CT, MRI & PET/CT Department, Agia Sofia Children’s Hospital, 115 27 Athens, Greece; (M.G.); (S.G.)
| | - Antonios Kattamis
- Division of Pediatric Hematology-Oncology, First Department of Pediatrics, National and Kapodistrian University of Athens School of Medicine & Agia Sofia Children’s Hospital, 115 27 Athens, Greece;
| | - George Chrousos
- University Research Institute of Maternal and Child Health and Precision Medicine, UNESCO, National and Kapodistrian University of Athens, 115 27 Athens, Greece;
| | - Christina Kanaka-Gantenbein
- Division of Pediatric Pulmonology, First Department of Pediatrics, National and Kapodistrian University of Athens School of Medicine & Agia Sofia Children’s Hospital, 115 27 Athens, Greece; (D.M.); (C.K.-G.)
| | - Athanasios G. Kaditis
- Division of Pediatric Pulmonology, First Department of Pediatrics, National and Kapodistrian University of Athens School of Medicine & Agia Sofia Children’s Hospital, 115 27 Athens, Greece; (D.M.); (C.K.-G.)
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Rossi Norrlund R, Meltzer C, Söderman C, Johnsson ÅA, Vikgren J, Molnar D, Gilljam M, Båth M. EVALUATION OF TWO CHEST TOMOSYNTHESIS CYSTIC FIBROSIS SCORING SYSTEMS USING HIGH-RESOLUTION COMPUTED TOMOGRAPHY BRODY SCORING AS REFERENCE. RADIATION PROTECTION DOSIMETRY 2021; 195:443-453. [PMID: 33948650 DOI: 10.1093/rpd/ncab057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 03/22/2021] [Accepted: 03/29/2021] [Indexed: 06/12/2023]
Abstract
PURPOSE To evaluate two chest tomosynthesis (CTS) scoring systems for cystic fibrosis (CF), one system developed by Vult von Steyern et al. (VvS) and one system based on the Brody scoring system for high-resolution computed tomography (HRCT) (modified Brody (mB)). Brody scoring of HRCT was used as reference. METHODS In conjunction with routine control HRCT at clinical follow-up, 10 consecutive adult CF patients underwent CTS for research purposes. Four radiologists scored the CTS examinations using the mB and VvS scoring systems. All scores were compared to the Brody HRCT scores. The agreement between the evaluated CTS scoring systems and the reference HRCT scoring system was determined using Spearman's rank correlation coefficient and the intraclass correlation coefficient (ICC). MAJOR FINDINGS Spearman's rank correlation coefficient showed strong correlations between HRCT score and both the mB and the VvS CTS total scores (median rs = 0.81 and 0.85, respectively). The ICC showed strong correlation between the CTS scoring systems and the reference: 0.88 for mB and 0.85 for VvS scoring. The median time for scoring was 20 and 10 minutes for the mB and VvS scoring systems, respectively. CONCLUSIONS Both evaluated CTS scoring systems correlate well with the reference standard Brody HRCT scoring. The VvS CTS scoring system has a shorter reading time, suggesting its advantage in clinical practice.
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Affiliation(s)
- Rauni Rossi Norrlund
- Department of Radiology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg 405 30, Sweden
- Department of Radiology, Sahlgrenska University Hospital, Gothenburg 413 45, Sweden
| | - Carin Meltzer
- Department of Radiology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg 405 30, Sweden
- Departments of Radiology and Nuclear Medicine, Oslo University Hospital, Oslo 0372, Norway
| | - Christina Söderman
- Department of Radiation Physics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg 405 30, Sweden
- Department of Medical Physics and Biomedical Engineering, Sahlgrenska University Hospital, Gothenburg 413 45, Sweden
| | - Åse Allansdotter Johnsson
- Department of Radiology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg 405 30, Sweden
- Department of Radiology, Sahlgrenska University Hospital, Gothenburg 413 45, Sweden
| | - Jenny Vikgren
- Department of Radiology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg 405 30, Sweden
- Department of Radiology, Sahlgrenska University Hospital, Gothenburg 413 45, Sweden
| | - David Molnar
- Department of Radiology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg 405 30, Sweden
- Department of Radiology, Sahlgrenska University Hospital, Gothenburg 413 45, Sweden
| | - Marita Gilljam
- CF-Centre, Sahlgrenska University Hospital, Gothenburg 413 45, Sweden
- Department of Respiratory Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg 413 45, Sweden
| | - Magnus Båth
- Department of Radiation Physics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg 405 30, Sweden
- Department of Medical Physics and Biomedical Engineering, Sahlgrenska University Hospital, Gothenburg 413 45, Sweden
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Lauwers E, Snoeckx A, Ides K, Van Hoorenbeeck K, Lanclus M, De Backer W, De Backer J, Verhulst S. Functional respiratory imaging in relation to classical outcome measures in cystic fibrosis: a cross-sectional study. BMC Pulm Med 2021; 21:256. [PMID: 34348676 PMCID: PMC8336350 DOI: 10.1186/s12890-021-01622-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 07/29/2021] [Indexed: 12/17/2022] Open
Abstract
Background Functional Respiratory Imaging (FRI) combines HRCT scans with computational fluid dynamics to provide objective and quantitative information about lung structure and function. FRI has proven its value in pulmonary diseases such as COPD and asthma, but limited studies have focused on cystic fibrosis (CF). This study aims to investigate the relation of multiple FRI parameters to validated imaging parameters and classical respiratory outcomes in a CF population. Methods CF patients aged > 5 years scheduled for a chest CT were recruited in a cross-sectional study. FRI outcomes included regional airway volume, airway wall volume, airway resistance, lobar volume, air trapping and pulmonary blood distribution. Besides FRI, CT scans were independently evaluated by 2 readers using the CF-CT score. Spirometry and the 6-Minute Walk Test (6MWT) were also performed. Statistical tests included linear mixed-effects models, repeated measures correlations, Pearson and Spearman correlations. Results 39 CT scans of 24 (17M/7F) subjects were analyzed. Patients were 24 ± 9 years old and had a ppFEV1 of 71 ± 25% at the time of the first CT. All FRI parameters showed significant low-to-moderate correlations with the total CF-CT score, except for lobar volume. When considering the relation between FRI parameters and similar CF-CT subscores, significant correlations were found between parameters related to airway volume, air trapping and airway wall thickening. Air trapping, lobar volume after normal expiration and pulmonary blood distribution showed significant associations with all spirometric parameters and oxygen saturation at the end of 6MWT. In addition, air trapping was the only parameter related to the distance covered during 6MWT. A subgroup analysis showed considerably higher correlations in patients with mild lung disease (ppFEV1 ≥ 70%) compared to patients with moderate to severe lung disease (ppFEV1 < 70%) when comparing FRI to CF-CT scores. Conclusions Multiple structural characteristics determined by FRI were associated with abnormalities determined by CF-CT score. Air trapping and pulmonary blood distribution appeared to be the most clinically relevant FRI parameters for CF patients due to their associations with classical outcome measures. The FRI methodology could particularly be of interest for patients with mild lung disease, although this should be confirmed in future research. Supplementary Information The online version contains supplementary material available at 10.1186/s12890-021-01622-3.
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Affiliation(s)
- Eline Lauwers
- Laboratory of Experimental Medicine and Pediatrics, Faculty of Medicine and Health Sciences, University of Antwerp, Universiteitsplein 1, 2160, Wilrijk, Belgium. .,Infla-Med Research Consortium of Excellence, University of Antwerp, Antwerp, Belgium.
| | - Annemiek Snoeckx
- Department of Radiology, Antwerp University Hospital, Edegem, Belgium.,Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
| | - Kris Ides
- Laboratory of Experimental Medicine and Pediatrics, Faculty of Medicine and Health Sciences, University of Antwerp, Universiteitsplein 1, 2160, Wilrijk, Belgium.,Infla-Med Research Consortium of Excellence, University of Antwerp, Antwerp, Belgium.,Department of Pediatrics, Antwerp University Hospital, Edegem, Belgium.,CoSys Research Lab, Faculty of Applied Engineering, University of Antwerp, Antwerp, Belgium.,Flanders Make Strategic Research Center, Lommel, Belgium
| | - Kim Van Hoorenbeeck
- Laboratory of Experimental Medicine and Pediatrics, Faculty of Medicine and Health Sciences, University of Antwerp, Universiteitsplein 1, 2160, Wilrijk, Belgium.,Infla-Med Research Consortium of Excellence, University of Antwerp, Antwerp, Belgium.,Department of Pediatrics, Antwerp University Hospital, Edegem, Belgium
| | | | - Wilfried De Backer
- FLUIDDA NV, Kontich, Belgium.,Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
| | | | - Stijn Verhulst
- Laboratory of Experimental Medicine and Pediatrics, Faculty of Medicine and Health Sciences, University of Antwerp, Universiteitsplein 1, 2160, Wilrijk, Belgium.,Infla-Med Research Consortium of Excellence, University of Antwerp, Antwerp, Belgium.,Department of Pediatrics, Antwerp University Hospital, Edegem, Belgium
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11
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Short C, Semple T, Saunders C, Hughes D, Irving S, Gardener L, Rosenthal M, Robinson PD, Davies JC. A Short extension to multiple breath washout provides additional signal of distal airway disease in people with CF: A pilot study. J Cyst Fibros 2021; 21:146-154. [PMID: 34275757 DOI: 10.1016/j.jcf.2021.06.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 05/30/2021] [Accepted: 06/25/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Adding a slow vital capacity (SVC) to multiple breath washout (MBW) allows quantification of otherwise overlooked signal from under/un-ventilated lung units (UVLU) and may provide a more comprehensive assessment of airway disease than conventional lung clearance index (LCI2.5). METHODS We conducted a pilot study on people undergoing MBW tests: 10 healthy controls (HC) and 43 cystic fibrosis (CF) subjects performed an SVC after the standard end of test. We term the new outcome LCI with Short extension (LCIShX). We assessed (i) CF/ HC differences, (ii) variability (iii) effect of pulmonary exacerbation (PEx)/treatment and (iv) relationship with CF computed tomography (CFCT) scores. RESULTS HC/ CF group differences were larger with LCIShX than LCI2.5 (P<0.001). Within the CF group UVLU was highly variable and when abnormal it did not correlate with corresponding LCI2.5. Signal showed little variability during clinical stability (n = 11 CF; 2 visits; median inter-test variability 2.6% LCIShX, 2.5% LCI2.5). PEx signal was significantly greater for LCIShX both for onset and resolution. Both MBW parameters correlated significantly with total lung CT scores and hyperinflation but only LCIShX correlated with mucus plugging. CONCLUSIONS UVLU captured within the LCIShX varies between individuals; the lack of relationship with LCI2.5 demonstrates that new, additional information is being captured. LCIShX repeatability during clinical stability combined with its larger signal around episodes of PEx may lend it superior sensitivity as an outcome measure. Further studies will build on this pilot data to fully establish its utility in monitoring disease status.
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Affiliation(s)
- Christopher Short
- Royal Brompton and Harefield NHS Foundation Trust, London, United Kingdom; National Heart and Lung Institute, Imperial College London, Manresa Rd, London, United Kingdom; European Cystic Fibrosis Society Lung Clearance Index Core Facility, London, United Kingdom.
| | - Thomas Semple
- Royal Brompton and Harefield NHS Foundation Trust, London, United Kingdom; National Heart and Lung Institute, Imperial College London, Manresa Rd, London, United Kingdom
| | - Clare Saunders
- Royal Brompton and Harefield NHS Foundation Trust, London, United Kingdom; National Heart and Lung Institute, Imperial College London, Manresa Rd, London, United Kingdom; European Cystic Fibrosis Society Lung Clearance Index Core Facility, London, United Kingdom
| | - Dominic Hughes
- Royal Brompton and Harefield NHS Foundation Trust, London, United Kingdom; National Heart and Lung Institute, Imperial College London, Manresa Rd, London, United Kingdom
| | - Samantha Irving
- Royal Brompton and Harefield NHS Foundation Trust, London, United Kingdom; National Heart and Lung Institute, Imperial College London, Manresa Rd, London, United Kingdom
| | - Laura Gardener
- Royal Brompton and Harefield NHS Foundation Trust, London, United Kingdom; National Heart and Lung Institute, Imperial College London, Manresa Rd, London, United Kingdom
| | - Mark Rosenthal
- Royal Brompton and Harefield NHS Foundation Trust, London, United Kingdom
| | - Paul D Robinson
- Department of Respiratory Medicine, The Children's Hospital at Westmead, Sydney, Australia; Discipline of Paediatrics and Child Health, Sydney Medical School, University of Sydney, Australia
| | - Jane C Davies
- Royal Brompton and Harefield NHS Foundation Trust, London, United Kingdom; National Heart and Lung Institute, Imperial College London, Manresa Rd, London, United Kingdom; European Cystic Fibrosis Society Lung Clearance Index Core Facility, London, United Kingdom
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12
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Cohen-Cymberknoh M, Ben Meir E, Gartner S, Reiter J, Spangenberg A, Garriga L, Eisenstadt I, Israeli T, Tsabari R, Shoseyov D, Gileles-Hillel A, Breuer O, Simanovsky N, Kerem E. How abnormal is the normal? Clinical characteristics of CF patients with normal FEV 1. Pediatr Pulmonol 2021; 56:2007-2013. [PMID: 33704929 DOI: 10.1002/ppul.25371] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 02/23/2021] [Accepted: 02/24/2021] [Indexed: 11/07/2022]
Abstract
BACKGROUND Normal values (>80%) of Forced Expiratory Volume in one second (FEV1 ) in patients with cystic fibrosis (CF) may lead to the interpretation that there is no lung disease. This study is a comprehensive analysis of lung involvement in CF patients having normal FEV1 . METHODS Patients were recruited from two CF centers: Hadassah Medical Center, Jerusalem and Vall d' Hebron Hospital, Barcelona. Lung disease was assessed by lung clearance index (LCI), chest CT-Brody score, respiratory cultures, number of pulmonary exacerbations (PEx), and days of antibiotic treatment in the year before the assessment. RESULTS Of the 247 patients, 89 (36%) had FEV1 ≥80% and were included in the study (mean age, 17.6; range, 4.25-49 years). Chronic Pseudomonas aeruginosa infection was found in 21%, and 31% had at least one major PEx in the year before the study. Abnormally elevated LCI was found in 86% of patients, ranging between 7.52 and 18.97, and total Brody score (TBS) was abnormal in 92% (range, 5.0-96.5). Patients with chronic P. aeruginosa had significantly higher LCI (p = .01) and TBS (p = .02) which were associated with more major PEx (p < .01 and p = .01, respectively) and more days of intravenous (IV) antibiotic treatment in the preceding year (p = .03 and p = .001, respectively). CONCLUSIONS Most CF patients with normal FEV1 have already physiological and structural lung abnormalities which were associated with more PEx and IV antibiotic treatment. Further studies are needed to determine if better adherence to the currently used therapies and the new cystic fibrosis transmembrane modulators will prevent the progression of lung disease.
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Affiliation(s)
- Malena Cohen-Cymberknoh
- Pediatric Pulmonology Unit and Cystic Fibrosis Center, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Elad Ben Meir
- Pediatric Pulmonology Unit and Cystic Fibrosis Center, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Silvia Gartner
- Pediatric Pulmonology Unit and Cystic Fibrosis Center, Hospital Universitari Vall d' Hebron, Barcelona, Spain
| | - Joel Reiter
- Pediatric Pulmonology Unit and Cystic Fibrosis Center, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Angeles Spangenberg
- Pediatric Pulmonology Unit and Cystic Fibrosis Center, Hospital Universitari Vall d' Hebron, Barcelona, Spain
| | - Laura Garriga
- Pediatric Pulmonology Unit and Cystic Fibrosis Center, Hospital Universitari Vall d' Hebron, Barcelona, Spain
| | - Iris Eisenstadt
- Department of Physiotherapy and Cystic Fibrosis Center, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Tomer Israeli
- Department of Physiotherapy and Cystic Fibrosis Center, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Reuven Tsabari
- Pediatric Pulmonology Unit and Cystic Fibrosis Center, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - David Shoseyov
- Pediatric Pulmonology Unit and Cystic Fibrosis Center, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Alex Gileles-Hillel
- Pediatric Pulmonology Unit and Cystic Fibrosis Center, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Oded Breuer
- Pediatric Pulmonology Unit and Cystic Fibrosis Center, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Natalia Simanovsky
- Department of Radiology, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Eitan Kerem
- Pediatric Pulmonology Unit and Cystic Fibrosis Center, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
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13
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McLeod C, Wood J, Tong A, Schultz A, Norman R, Smith S, Blyth CC, Webb S, Smyth AR, Snelling TL. The measurement properties of tests and tools used in cystic fibrosis studies: a systematic review. Eur Respir Rev 2021; 30:200354. [PMID: 33980667 PMCID: PMC9489019 DOI: 10.1183/16000617.0354-2020] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 12/26/2020] [Indexed: 11/05/2022] Open
Abstract
There is no consensus on how best to measure responses to interventions among children and adults with cystic fibrosis (CF). We have systematically reviewed and summarised the characteristics and measurement properties of tests and tools that have been used to capture outcomes in studies among people with CF, including their reliability, validity and responsiveness. This review is intended to guide researchers when selecting tests or tools for measuring treatment effects in CF trials. A consensus set of these tests and tools could improve consistency in how outcomes are captured and thereby facilitate comparisons and synthesis of evidence across studies.
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Affiliation(s)
- Charlie McLeod
- Wesfarmers Centre for Vaccines and Infectious Diseases, Telethon Kids Institute, Nedlands, Australia
- Division of Paediatrics, Faculty of Medicine, University of Western Australia, Nedlands, Australia
- Infectious Diseases Dept, Perth Children's Hospital, Nedlands, Australia
| | - Jamie Wood
- Physiotherapy Dept, Sir Charles Gairdner Hospital, Nedlands, Australia
| | - Allison Tong
- Sydney School of Public Health, The University of Sydney, Sydney, Australia
- Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
| | - André Schultz
- Wal-yan Respiratory Research Centre, Telethon Kids Institute, University of Western Australia, Nedlands, Australia
- Dept of Respiratory and Sleep Medicine, Perth Children's Hospital, Nedlands, Australia
| | - Richard Norman
- School of Population Health, Curtin University, Bentley, Australia
| | - Sherie Smith
- Evidence Based Child Health Group, University of Nottingham, Queens Medical Centre, Nottingham, UK
| | - Christopher C Blyth
- Wesfarmers Centre for Vaccines and Infectious Diseases, Telethon Kids Institute, Nedlands, Australia
- Division of Paediatrics, Faculty of Medicine, University of Western Australia, Nedlands, Australia
- Infectious Diseases Dept, Perth Children's Hospital, Nedlands, Australia
- Pathwest Laboratory Medicine WA, QEII Medical Centre, Nedlands, Australia
| | - Steve Webb
- St John of God Hospital, Subiaco, Australia
- School of Population Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Alan R Smyth
- Evidence Based Child Health Group, University of Nottingham, Queens Medical Centre, Nottingham, UK
| | - Thomas L Snelling
- Sydney School of Public Health, The University of Sydney, Sydney, Australia
- Menzies School of Health Research, Royal Darwin Hospital Campus, Tiwi, Australia
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14
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Best Practices: Imaging Strategies for Reduced-Dose Chest CT in the Management of Cystic Fibrosis-Related Lung Disease. AJR Am J Roentgenol 2021; 217:304-313. [PMID: 34076456 DOI: 10.2214/ajr.19.22694] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
OBJECTIVE. Cystic fibrosis (CF) is a multisystemic life-limiting disorder. The leading cause of morbidity in CF is chronic pulmonary disease. Chest CT is the reference standard for detection of bronchiectasis. Cumulative ionizing radiation limits the use of CT, particularly as treatments improve and life expectancy increases. The purpose of this article is to summarize the evidence on low-dose chest CT and its effect on image quality to determine best practices for imaging in CF. CONCLUSION. Low-dose chest CT is technically feasible, reduces dose, and renders satisfactory image quality. There are few comparison studies of low-dose chest CT and standard chest CT in CF; however, evidence suggests equivalent diagnostic capability. Low-dose chest CT with iterative reconstructive algorithms appears superior to chest radiography and equivalent to standard CT and has potential for early detection of bronchiectasis and infective exacerbations, because clinically significant abnormalities can develop in patients who do not have symptoms. Infection and inflammation remain the primary causes of morbidity requiring early intervention. Research gaps include the benefits of replacing chest radiography with low-dose chest CT in terms of improved diagnostic yield, clinical decision making, and patient outcomes. Longitudinal clinical studies comparing CT with MRI for the monitoring of CF lung disease may better establish the complementary strengths of these imaging modalities.
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15
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Goralski JL, Stewart NJ, Woods JC. Novel imaging techniques for cystic fibrosis lung disease. Pediatr Pulmonol 2021; 56 Suppl 1:S40-S54. [PMID: 32592531 PMCID: PMC7808406 DOI: 10.1002/ppul.24931] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 06/25/2020] [Indexed: 12/24/2022]
Abstract
With an increasing number of patients with cystic fibrosis (CF) receiving highly effective CFTR (cystic fibrosis transmembrane regulator protein) modulator therapy, particularly at a young age, there is an increasing need to identify imaging tools that can detect and regionally visualize mild CF lung disease and subtle changes in disease state. In this review, we discuss the latest developments in imaging modalities for both structural and functional imaging of the lung available to CF clinicians and researchers, from the widely available, clinically utilized imaging methods for assessing CF lung disease-chest radiography and computed tomography-to newer techniques poised to become the next phase of clinical tools-structural/functional proton and hyperpolarized gas magnetic resonance imaging (MRI). Finally, we provide a brief discussion of several newer lung imaging techniques that are currently available only in selected research settings, including chest tomosynthesis, and fluorinated gas MRI. We provide an update on the clinical and/or research status of each technique, with a focus on sensitivity, early disease detection, and possibilities for monitoring treatment efficacy.
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Affiliation(s)
- Jennifer L Goralski
- UNC Cystic Fibrosis Center, Marsico Lung Institute, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.,Division of Pulmonary and Critical Care Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.,Division of Pediatric Pulmonology, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Neil J Stewart
- Center for Pulmonary Imaging Research, Cincinnati Children's Hospital, Cincinnati, Ohio.,Department of Infection, Immunity & Cardiovascular Disease, POLARIS Group, Imaging Sciences, University of Sheffield, Sheffield, UK
| | - Jason C Woods
- Center for Pulmonary Imaging Research, Cincinnati Children's Hospital, Cincinnati, Ohio.,Department of Pediatrics, University of Cincinnati, Cincinnati, Ohio.,Department of Radiology, Cincinnati Children's Hospital, Cincinnati, Ohio
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16
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Moutafidis D, Gavra M, Golfinopoulos S, Oikonomopoulou C, Kitra V, Woods JC, Kaditis AG. Lung hyperinflation quantitated by chest CT in children with bronchiolitis obliterans syndrome following allogeneic hematopoietic cell transplantation. Clin Imaging 2021; 75:97-104. [PMID: 33515927 DOI: 10.1016/j.clinimag.2021.01.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 12/21/2020] [Accepted: 01/11/2021] [Indexed: 12/17/2022]
Abstract
OBJECTIVES Bronchiolitis obliterans syndrome (BOS) diagnosis in children following allogeneic hematopoietic stem cell transplantation (post-HSCT) is based on detection of airway obstruction on spirometry and air-trapping, small airway thickening or bronchiectasis on chest CT. We assessed the relationship between spirometry indices and low-attenuation lung volume at total lung capacity (TLC) on CT. METHODS Data of children post-HSCT with and without BOS were analyzed. An age-specific, low-attenuation threshold (LAT) was defined as average of (mean-1SD) lung parenchyma attenuation of 5 control subjects without lung disease matched to each age subgroup of post-HSCT patients. % CT lung volume at TLC with attenuation values <LAT was calculated. Association between % lung volume with low attenuation and FEV1/FVC was assessed. RESULTS Twenty-nine children post-HSCT were referred to exclude BOS and 12 of them had spirometry and an analyzable chest CT. We studied: (i) 6 children post-HSCT/BOS (median age: 8.5 years [IQR 7, 15]; median FEV1/FVC z-score: -2.60 [IQR -2.93, -2.14]); (ii) 6 children post-HSCT/no BOS (age: 13.5 years [9.8, 16.3]; FEV1/FVC z-score: 0.44 [-0.30, 2.10]); and (iii) 40 controls without lung disease (age:11 years [8.3, 15.8]). Patients post-HSCT/BOS had significantly higher % lung volume with low attenuation than patients post-HSCT/no BOS: median % volume 16.4% (7.1%, 37.2%) vs. 0.61% (0.34%, 2.79%), respectively; P = .004. An exponential model described the association between % CT lung volume below LAT and FEV1/FVC z-score (r2 = 0.76; P < .001). CONCLUSION In children post-HSCT with BOS, low-attenuation lung volume on chest CT is associated with airway obstruction severity as expressed by FEV1/FVC z-score.
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Affiliation(s)
- Dimitrios Moutafidis
- Division of Pediatric Pulmonology, First Department of Pediatrics, National and Kapodistrian University of Athens School of Medicine & Aghia Sophia Children's Hospital, Athens, Greece
| | - Maria Gavra
- CT, MRI & PET/CT Department, Aghia Sophia Children's Hospital, Athens, Greece
| | | | | | - Vasiliki Kitra
- Stem Cell Transplant Unit, Aghia Sophia Children's Hospital, Athens, Greece
| | - Jason C Woods
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine and Department of Radiology, Cincinnati Children's Hospital Medical Center & Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Athanasios G Kaditis
- Division of Pediatric Pulmonology, First Department of Pediatrics, National and Kapodistrian University of Athens School of Medicine & Aghia Sophia Children's Hospital, Athens, Greece.
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17
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Chassagnon G, Zacharaki EI, Bommart S, Burgel PR, Chiron R, Dangeard S, Paragios N, Martin C, Revel MP. Quantification of Cystic Fibrosis Lung Disease with Radiomics-based CT Scores. Radiol Cardiothorac Imaging 2020; 2:e200022. [PMID: 33778637 DOI: 10.1148/ryct.2020200022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 09/10/2020] [Accepted: 10/30/2020] [Indexed: 11/11/2022]
Abstract
Purpose To develop radiomics-based CT scores for assessing lung disease severity and exacerbation risk in adult patients with cystic fibrosis (CF). Materials and Methods This two-center retrospective observational study was approved by an institutional ethics committee, and the need for patient consent was waived. A total of 215 outpatients with CF referred for unenhanced follow-up chest CT were evaluated in two different centers between January 2013 and December 2016. After lung segmentation, chest CT scans from center 1 (training cohort, 162 patients [median age, 29 years; interquartile range {IQR}, 24-36 years; 84 men]) were used to build CT scores from 38 extracted CT features, using five different machine learning techniques trained to predict a clinical prognostic score, the Nkam score. The correlations between the developed CT scores, two different clinical prognostic scores (Liou and CF-ABLE), forced expiratory volume in 1 second (FEV1), and risk of respiratory exacerbations were evaluated in the test cohort (center 2, 53 patients [median age, 27 years; IQR, 22-35 years; 34 men]) using the Spearman rank coefficient. Results In the test cohort, all radiomics-based CT scores showed moderate to strong correlation with the Nkam score (R = 0.57 to 0.63, P < .001) and Liou scores (R = -0.55 to -0.65, P < .001), whereas the correlation with CF-ABLE score was weaker (R = 0.28 to 0.38, P = .005 to .048). The developed CT scores showed strong correlation with predicted FEV1 (R = -0.62 to -0.66, P < .001) and weak to moderate correlation with the number of pulmonary exacerbations to occur in the 12 months after the CT examination (R = 0.38 to 0.55, P < .001 to P = .006). Conclusion Radiomics can be used to build automated CT scores that correlate to clinical severity and exacerbation risk in adult patients with CF.Supplemental material is available for this article.See also the commentary by Elicker and Sohn in this issue.© RSNA, 2020.
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Affiliation(s)
- Guillaume Chassagnon
- Department of Radiology (G.C., S.D., M.P.R.) and Respiratory Medicine and National Cystic Reference Center (P.R.B.), Groupe Hospitalier Cochin-Hotel Dieu, AP-HP, Université Paris Descartes, 27 Rue du Faubourg Saint-Jacques, 75014 Paris, France; Center for Visual Computing, Ecole CentraleSupelec, Grande Voie des Vignes, Chatenay Malabry, France (G.C., E.I.Z., N.P.); U1016 Inserm, Institut Cochin, Paris, France (G.C., P.R.B., C.M., M.P.R.); Radiology Department (S.B.) and Pulmonary Department (R.C.), Hôpital Arnaud de Villeneuve, CHU de Montpellier, Université de Montpellier, Montpellier, France; ERN-Lung CF Network, France (P.R.B., C.M.); and TheraPanacea, Paris-Biotech-Santé, Paris, France (N.P.)
| | - Evangelia I Zacharaki
- Department of Radiology (G.C., S.D., M.P.R.) and Respiratory Medicine and National Cystic Reference Center (P.R.B.), Groupe Hospitalier Cochin-Hotel Dieu, AP-HP, Université Paris Descartes, 27 Rue du Faubourg Saint-Jacques, 75014 Paris, France; Center for Visual Computing, Ecole CentraleSupelec, Grande Voie des Vignes, Chatenay Malabry, France (G.C., E.I.Z., N.P.); U1016 Inserm, Institut Cochin, Paris, France (G.C., P.R.B., C.M., M.P.R.); Radiology Department (S.B.) and Pulmonary Department (R.C.), Hôpital Arnaud de Villeneuve, CHU de Montpellier, Université de Montpellier, Montpellier, France; ERN-Lung CF Network, France (P.R.B., C.M.); and TheraPanacea, Paris-Biotech-Santé, Paris, France (N.P.)
| | - Sébastien Bommart
- Department of Radiology (G.C., S.D., M.P.R.) and Respiratory Medicine and National Cystic Reference Center (P.R.B.), Groupe Hospitalier Cochin-Hotel Dieu, AP-HP, Université Paris Descartes, 27 Rue du Faubourg Saint-Jacques, 75014 Paris, France; Center for Visual Computing, Ecole CentraleSupelec, Grande Voie des Vignes, Chatenay Malabry, France (G.C., E.I.Z., N.P.); U1016 Inserm, Institut Cochin, Paris, France (G.C., P.R.B., C.M., M.P.R.); Radiology Department (S.B.) and Pulmonary Department (R.C.), Hôpital Arnaud de Villeneuve, CHU de Montpellier, Université de Montpellier, Montpellier, France; ERN-Lung CF Network, France (P.R.B., C.M.); and TheraPanacea, Paris-Biotech-Santé, Paris, France (N.P.)
| | - Pierre-Régis Burgel
- Department of Radiology (G.C., S.D., M.P.R.) and Respiratory Medicine and National Cystic Reference Center (P.R.B.), Groupe Hospitalier Cochin-Hotel Dieu, AP-HP, Université Paris Descartes, 27 Rue du Faubourg Saint-Jacques, 75014 Paris, France; Center for Visual Computing, Ecole CentraleSupelec, Grande Voie des Vignes, Chatenay Malabry, France (G.C., E.I.Z., N.P.); U1016 Inserm, Institut Cochin, Paris, France (G.C., P.R.B., C.M., M.P.R.); Radiology Department (S.B.) and Pulmonary Department (R.C.), Hôpital Arnaud de Villeneuve, CHU de Montpellier, Université de Montpellier, Montpellier, France; ERN-Lung CF Network, France (P.R.B., C.M.); and TheraPanacea, Paris-Biotech-Santé, Paris, France (N.P.)
| | - Raphael Chiron
- Department of Radiology (G.C., S.D., M.P.R.) and Respiratory Medicine and National Cystic Reference Center (P.R.B.), Groupe Hospitalier Cochin-Hotel Dieu, AP-HP, Université Paris Descartes, 27 Rue du Faubourg Saint-Jacques, 75014 Paris, France; Center for Visual Computing, Ecole CentraleSupelec, Grande Voie des Vignes, Chatenay Malabry, France (G.C., E.I.Z., N.P.); U1016 Inserm, Institut Cochin, Paris, France (G.C., P.R.B., C.M., M.P.R.); Radiology Department (S.B.) and Pulmonary Department (R.C.), Hôpital Arnaud de Villeneuve, CHU de Montpellier, Université de Montpellier, Montpellier, France; ERN-Lung CF Network, France (P.R.B., C.M.); and TheraPanacea, Paris-Biotech-Santé, Paris, France (N.P.)
| | - Séverine Dangeard
- Department of Radiology (G.C., S.D., M.P.R.) and Respiratory Medicine and National Cystic Reference Center (P.R.B.), Groupe Hospitalier Cochin-Hotel Dieu, AP-HP, Université Paris Descartes, 27 Rue du Faubourg Saint-Jacques, 75014 Paris, France; Center for Visual Computing, Ecole CentraleSupelec, Grande Voie des Vignes, Chatenay Malabry, France (G.C., E.I.Z., N.P.); U1016 Inserm, Institut Cochin, Paris, France (G.C., P.R.B., C.M., M.P.R.); Radiology Department (S.B.) and Pulmonary Department (R.C.), Hôpital Arnaud de Villeneuve, CHU de Montpellier, Université de Montpellier, Montpellier, France; ERN-Lung CF Network, France (P.R.B., C.M.); and TheraPanacea, Paris-Biotech-Santé, Paris, France (N.P.)
| | - Nikos Paragios
- Department of Radiology (G.C., S.D., M.P.R.) and Respiratory Medicine and National Cystic Reference Center (P.R.B.), Groupe Hospitalier Cochin-Hotel Dieu, AP-HP, Université Paris Descartes, 27 Rue du Faubourg Saint-Jacques, 75014 Paris, France; Center for Visual Computing, Ecole CentraleSupelec, Grande Voie des Vignes, Chatenay Malabry, France (G.C., E.I.Z., N.P.); U1016 Inserm, Institut Cochin, Paris, France (G.C., P.R.B., C.M., M.P.R.); Radiology Department (S.B.) and Pulmonary Department (R.C.), Hôpital Arnaud de Villeneuve, CHU de Montpellier, Université de Montpellier, Montpellier, France; ERN-Lung CF Network, France (P.R.B., C.M.); and TheraPanacea, Paris-Biotech-Santé, Paris, France (N.P.)
| | - Clémence Martin
- Department of Radiology (G.C., S.D., M.P.R.) and Respiratory Medicine and National Cystic Reference Center (P.R.B.), Groupe Hospitalier Cochin-Hotel Dieu, AP-HP, Université Paris Descartes, 27 Rue du Faubourg Saint-Jacques, 75014 Paris, France; Center for Visual Computing, Ecole CentraleSupelec, Grande Voie des Vignes, Chatenay Malabry, France (G.C., E.I.Z., N.P.); U1016 Inserm, Institut Cochin, Paris, France (G.C., P.R.B., C.M., M.P.R.); Radiology Department (S.B.) and Pulmonary Department (R.C.), Hôpital Arnaud de Villeneuve, CHU de Montpellier, Université de Montpellier, Montpellier, France; ERN-Lung CF Network, France (P.R.B., C.M.); and TheraPanacea, Paris-Biotech-Santé, Paris, France (N.P.)
| | - Marie-Pierre Revel
- Department of Radiology (G.C., S.D., M.P.R.) and Respiratory Medicine and National Cystic Reference Center (P.R.B.), Groupe Hospitalier Cochin-Hotel Dieu, AP-HP, Université Paris Descartes, 27 Rue du Faubourg Saint-Jacques, 75014 Paris, France; Center for Visual Computing, Ecole CentraleSupelec, Grande Voie des Vignes, Chatenay Malabry, France (G.C., E.I.Z., N.P.); U1016 Inserm, Institut Cochin, Paris, France (G.C., P.R.B., C.M., M.P.R.); Radiology Department (S.B.) and Pulmonary Department (R.C.), Hôpital Arnaud de Villeneuve, CHU de Montpellier, Université de Montpellier, Montpellier, France; ERN-Lung CF Network, France (P.R.B., C.M.); and TheraPanacea, Paris-Biotech-Santé, Paris, France (N.P.)
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Tagliati C, Lanza C, Pieroni G, Amici L, Carotti M, Giuseppetti GM, Giovagnoni A. Ultra-low-dose chest CT in adult patients with cystic fibrosis using a third-generation dual-source CT scanner. Radiol Med 2020; 126:544-552. [PMID: 33200307 DOI: 10.1007/s11547-020-01304-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 10/29/2020] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Chest computed tomography (CT) examinations are performed routinely in some cystic fibrosis (CF) centers in order to evaluate lung disease progression in CF patients. Continuous CT technological advancement in theory could allows a lower radiation exposure of CF patients during chest CT examinations without an image quality reduction, and this could become increasingly important over time in order to reduce the cumulative radiation dose effects given the continuous increase of CF patients predicted median survival. OBJECTIVE The aim of this study was to compare objective and subjective image quality and radiation dose between low-dose chest CT examinations performed in adult CF patients using a third-generation DSCT scanner and a 64-slices single-source CT (SSCT) scanner. MATERIALS AND METHODS Between January 2016 and August 2019, 81 CF patients underwent low-dose chest CT examinations using both a 64-slices SSCT scanner (2016-2017) and a third-generation DSCT scanner (2018-2019). Objective image noise standard deviation (INSD), signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR), overall subjective image quality (OSIQ), subjective image noise (SIN), subjective evaluation of streaking artifacts (SA), movement artifacts (MA) and edge resolution (ER), dose-length product (DLP), volume computed tomography dose index (CTDIvol) and effective radiation dose (ERD) were compared between DSCT and SSCT examinations. DSCT examinations consisted in spiral inspiratory end expiratory acquisitions. SSCT examinations consisted in spiral inspiratory acquisitions and five axial expiratory ones. RESULTS DSCT protocol showed statistically significant lower spiral inspiratory phase mean DLP, CTDIvol and ERD than SSCT protocol, with a 25% DLP, CTDIvol and ERD reduction. DSCT protocol showed statistically significant higher overall (inspiratory and expiratory phases) mean DLP, CTDIvol and ERD than SSCT protocol, with a 40% DLP, CTDIvol and ERD increase. Objective image quality (INSD, SNR and CNR) and SIN differences were not statistically significant, but subjective evaluation of DSCT images showed statistically significant better OSIQ and ER, as well as statistically significant lower SA and MA with respect to SSCT images. CONCLUSIONS To our knowledge, this is the first study evaluating chest CT image quality and radiation dose in adult CF patients using a third-generation DSCT scanner, and it showed that technological advancements could be used in order to reduce radiation exposure of volumetric examinations. The spiral inspiratory dose reduction can be obtained with concomitant improvements in subjective image quality with comparable objective quality. This will probably allow a wider use of this imaging modality in order to assess bronchiectasis and will probably foster spiral expiratory acquisition for small airways disease evaluation.
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Affiliation(s)
- Corrado Tagliati
- School of Radiology, Università Politecnica Delle Marche, Ancona, Italy.
| | - Cecilia Lanza
- Department of Radiological Sciences, Azienda Ospedaliero Universitaria Ospedali Riuniti, Università Politecnica Delle Marche, Ancona, Italy
| | - Giovanni Pieroni
- Department of Radiological Sciences, Azienda Ospedaliero Universitaria Ospedali Riuniti, Università Politecnica Delle Marche, Ancona, Italy
| | - Lucia Amici
- Department of Radiological Sciences, Azienda Ospedaliero Universitaria Ospedali Riuniti, Università Politecnica Delle Marche, Ancona, Italy
| | - Marina Carotti
- Department of Radiological Sciences, Azienda Ospedaliero Universitaria Ospedali Riuniti, Università Politecnica Delle Marche, Ancona, Italy
| | - Gian Marco Giuseppetti
- Department of Radiological Sciences, Azienda Ospedaliero Universitaria Ospedali Riuniti, Università Politecnica Delle Marche, Ancona, Italy
| | - Andrea Giovagnoni
- Department of Radiological Sciences, Azienda Ospedaliero Universitaria Ospedali Riuniti, Università Politecnica Delle Marche, Ancona, Italy
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19
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Tiddens HAWM, Andrinopoulou ER, McIntosh J, Elborn JS, Kerem E, Bouma N, Bosch J, Kemner-van de Corput M. Chest computed tomography outcomes in a randomized clinical trial in cystic fibrosis: Lessons learned from the first ataluren phase 3 study. PLoS One 2020; 15:e0240898. [PMID: 33141825 PMCID: PMC7608929 DOI: 10.1371/journal.pone.0240898] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 10/05/2020] [Indexed: 12/04/2022] Open
Abstract
A phase 3 randomized double blind controlled, trial in 238 people with cystic fibrosis (CF) and at least one nonsense mutation (nmCF) investigated the effect of ataluren on FEV1. The study was of 48 weeks duration and failed to meet its primary endpoint. Unexpectedly, while FEV1 declined, chest computed tomography (CT) scores using the Brody-II score as secondary outcome measures did not show progression in the placebo group. Based on this observation it was concluded that the role of CT scans in CF randomized clinical trials was limited. However, more sensitive scoring systems were developed over the last decade warranting a reanalysis of this unique dataset. The aim of our study was to reanalyse all chest CT scans, obtained in the ataluren phase 3 study, using 2 independent scoring systems to characterize structural lung disease in this cohort and to compare progression of structural lung disease over the 48 weeks between treatment arms. 391 study CT scans from 210 patients were reanalysed in random order by 2 independent observers using the CF-CT and Perth-Rotterdam Annotated Grid Morphometric Analysis for CF (PRAGMA-CF) scoring systems. CF-CT and PRAGMA-CF subscores were expressed as %maximal score and %total lung volume, respectively. PRAGMA-CF subscores %Disease (p = 0.008) and %Mucus Plugging (p = 0.029) progressed over 48 weeks. CF-CT subscores did not show progression. There was no difference in progression of structural lung disease between treatment arm and placebo independent of tobramycin use. PRAGMA-CF Chest CT scores can be used as an outcome measure to study the effect of potential disease modifying drugs in CF on lung structure.
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Affiliation(s)
- Harm A. W. M. Tiddens
- Department of Pediatric Pulmonology and Allergology, Erasmus Medical Center Sophia Children’s Hospital, Rotterdam, The Netherlands
- Department and Radiology and Nuclear Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | | | - Joe McIntosh
- Aruvant Biotech, New York, NY, United States of America
| | - J. Stuart Elborn
- Centre for Experimental Medicine, Queen's University Belfast, Belfast, United Kingdom
| | - Eitan Kerem
- Department of Pediatrics and CF Center, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Nynke Bouma
- Department of Pediatric Pulmonology and Allergology, Erasmus Medical Center Sophia Children’s Hospital, Rotterdam, The Netherlands
| | - Jochem Bosch
- Department of Pediatric Pulmonology and Allergology, Erasmus Medical Center Sophia Children’s Hospital, Rotterdam, The Netherlands
| | - Mariette Kemner-van de Corput
- Department of Pediatric Pulmonology and Allergology, Erasmus Medical Center Sophia Children’s Hospital, Rotterdam, The Netherlands
- Department and Radiology and Nuclear Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
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20
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Svedberg M, Gustafsson P, Tiddens H, Imberg H, Pivodic A, Lindblad A. Risk factors for progression of structural lung disease in school-age children with cystic fibrosis. J Cyst Fibros 2020; 19:910-916. [DOI: 10.1016/j.jcf.2019.10.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 10/14/2019] [Accepted: 10/14/2019] [Indexed: 10/25/2022]
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21
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Woods JC, Wild JM, Wielpütz MO, Clancy JP, Hatabu H, Kauczor HU, van Beek EJ, Altes TA. Current state of the art MRI for the longitudinal assessment of cystic fibrosis. J Magn Reson Imaging 2020; 52:1306-1320. [PMID: 31846139 PMCID: PMC7297663 DOI: 10.1002/jmri.27030] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 12/02/2019] [Accepted: 12/02/2019] [Indexed: 12/13/2022] Open
Abstract
Pulmonary MRI can now provide high-resolution images that are sensitive to early disease and specific to inflammation in cystic fibrosis (CF) lung disease. With specificity and function limited via computed tomography (CT), there are significant advantages to MRI. Many of the modern MRI techniques can be performed throughout life, and can be employed to understand changes over time, in addition to quantification of treatment response. Proton density and T1 /T2 contrast images can be obtained within a single breath-hold, providing depiction of structural abnormalities and active inflammation. Modern radial and/or spiral ultrashort echo-time (UTE) techniques rival CT in resolution for depiction and quantification of structure, for both airway and parenchymal abnormalities. Contrast perfusion MRI techniques are now utilized routinely to visualize changes in pulmonary and bronchial circulation that routinely occur in CF lung disease, and noncontrast techniques are moving closer to clinical translation. Functional information can be obtained from noncontrast proton images alone, using techniques such as Fourier decomposition. Hyperpolarized-gas MRI, increasingly using 129 Xe, is now becoming more widespread and has been demonstrated to have high sensitivity to early airway obstruction in CF via ventilation MRI. The sensitivity of 129 Xe MRI promises future use in personalized medicine, management of early CF lung disease, and in future clinical trials. By combining structural and functional techniques, with or without hyperpolarized gases, regional structure-function relationships can be obtained, giving insight into the pathophysiology of disease and improved clinical management. This article reviews the modern MRI techniques that can routinely be employed for CF lung disease in nearly any large medical center. Level of Evidence: 4 Technical Efficacy Stage: 5 J. Magn. Reson. Imaging 2019.
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Affiliation(s)
- Jason C. Woods
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine and Department of Radiology, Cincinnati Children’s Hospital and University of Cincinnati; Cincinnati OH, USA
| | - Jim M. Wild
- Department of Radiology, University of Sheffield, Sheffield UK
| | - Mark O. Wielpütz
- Department of Diagnostic and Interventional Radiology, University of Heidelberg, Heidelberg, Germany
- Translational Lung Research Center (TLRC) Heidelberg, German Center for lung Research (DZL), Heidelberg, Germany
| | - John P. Clancy
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine and Department of Radiology, Cincinnati Children’s Hospital and University of Cincinnati; Cincinnati OH, USA
| | - Hiroto Hatabu
- Center for Pulmonary Functional Imaging, Department of Radiology, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, USA
| | - Hans-Ulrich Kauczor
- Department of Diagnostic and Interventional Radiology, University of Heidelberg, Heidelberg, Germany
- Translational Lung Research Center (TLRC) Heidelberg, German Center for lung Research (DZL), Heidelberg, Germany
| | - Edwin J.R. van Beek
- Edinburgh Imaging, Queen’s Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - Talissa A Altes
- Department of Radiology, University of Missouri, Columbia, MO, USA
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22
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Meerburg JJ, Hartmann IJC, Goldacker S, Baumann U, Uhlmann A, Andrinopoulou ER, Kemner V/D Corput MPC, Warnatz K, Tiddens HAWM. Analysis of Granulomatous Lymphocytic Interstitial Lung Disease Using Two Scoring Systems for Computed Tomography Scans-A Retrospective Cohort Study. Front Immunol 2020; 11:589148. [PMID: 33193417 PMCID: PMC7662109 DOI: 10.3389/fimmu.2020.589148] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 10/05/2020] [Indexed: 01/16/2023] Open
Abstract
Background Granulomatous lymphocytic interstitial lung disease (GLILD) is present in about 20% of patients with common variable immunodeficiency disorders (CVID). GLILD is characterized by nodules, reticulation, and ground-glass opacities on CT scans. To date, large cohort studies that include sensitive CT outcome measures are lacking, and severity of structural lung disease remains unknown. The aim of this study was to introduce and compare two scoring methods to phenotype CT scans of GLILD patients. Methods Patients were enrolled in the “Study of Interstitial Lung Disease in Primary Antibody Deficiency” (STILPAD) international cohort. Inclusion criteria were diagnosis of both CVID and GLILD, as defined by the treating immunologist and radiologist. Retrospectively collected CT scans were scored systematically with the Baumann and Hartmann methods. Results In total, 356 CT scans from 138 patients were included. Cross-sectionally, 95% of patients met a radiological definition of GLILD using both methods. Bronchiectasis was present in 82% of patients. Inter-observer reproducibility (intraclass correlation coefficients) of GLILD and airway disease were 0.84 and 0.69 for the Hartmann method and 0.74 and 0.42 for the Baumann method. Conclusions In both the Hartmann and Baumann scoring method, the composite score GLILD was reproducible and therefore might be a valuable outcome measure in future studies. Overall, the reproducibility of the Hartmann method appears to be slightly better than that of the Baumann method. With a systematic analysis, we showed that GLILD patients suffer from extensive lung disease, including airway disease. Further validation of these scoring methods should be performed in a prospective cohort study involving routine collection of standardized CT scans. Clinical Trial Registration https://www.drks.de, identifier DRKS00000799.
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Affiliation(s)
- Jennifer J Meerburg
- Department of Paediatric Pulmonology and Allergology, Sophia Children's Hospital-Erasmus Medical Center, Rotterdam, Netherlands.,Department of Radiology and Nuclear Medicine, Erasmus Medical Center, Rotterdam, Netherlands
| | | | - Sigune Goldacker
- Department of Rheumatology and Clinical Immunology, Faculty of Medicine, University of Freiburg, Medical Center-University of Freiburg, Freiburg, Germany
| | - Ulrich Baumann
- Department of Paediatric Pulmonology, Allergy and Neonatology, Hannover Medical School, Hannover, Germany
| | - Annette Uhlmann
- Institute for Immunodeficiency, Center for Chronic Immunodeficiency (CCI), Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | | | - Mariette P C Kemner V/D Corput
- Department of Paediatric Pulmonology and Allergology, Sophia Children's Hospital-Erasmus Medical Center, Rotterdam, Netherlands.,Department of Radiology and Nuclear Medicine, Erasmus Medical Center, Rotterdam, Netherlands
| | - Klaus Warnatz
- Department of Rheumatology and Clinical Immunology, Faculty of Medicine, University of Freiburg, Medical Center-University of Freiburg, Freiburg, Germany.,Center for Chronic Immunodeficiency (CCI), Faculty of Medicine, University of Freiburg, Medical Center-University of Freiburg, Freiburg, Germany
| | - Harm A W M Tiddens
- Department of Paediatric Pulmonology and Allergology, Sophia Children's Hospital-Erasmus Medical Center, Rotterdam, Netherlands.,Department of Radiology and Nuclear Medicine, Erasmus Medical Center, Rotterdam, Netherlands
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23
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[Cystic fibrosis and computed tomography of the lungs]. Radiologe 2020; 60:791-801. [PMID: 32621155 DOI: 10.1007/s00117-020-00713-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
With its high detail of morphological changes in lung parenchyma and airways as well as the possibilities for three-dimensional reconstruction, computed tomography (CT) represents a solid tool for the diagnosis and follow-up in patients suffering from cystic fibrosis (CF). Guidelines for standardized CT image acquisition in CF patients are still missing. In the mostly younger CF patients, an important issue is the well-considered use of radiation in CT imaging. The use of intravenous contrast agent is mainly restricted to acute emergency diagnostics. Typical morphological findings in CF lung disease are bronchiectasis, mucus plugging, or signs of decreased ventilation (air trapping) which can be detected with CT even in early stages. Various scoring systems that have become established over time are used to grade disease severity and for structured follow-up, e.g., in clinical research studies. With the technical development of CT, a number of postprocessing software tools were developed to help clinical reporting and overcome interreader differences for a standardized quantification. As an imaging modality free of ionizing radiation, magnetic resonance imaging (MRI) is becoming increasingly important in the diagnosis and follow-up of CF patients and is already frequently a substitute for CT for long-term follow-up at numerous specialized centers.
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24
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Beckmann N. Editorial for "Echo Time-Dependence of Observed Lung T1 in Patients With Cystic Fibrosis and Correlation With Clinical Metrics". J Magn Reson Imaging 2020; 52:1655-1656. [PMID: 32619307 DOI: 10.1002/jmri.27277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Accepted: 06/15/2020] [Indexed: 11/05/2022] Open
Affiliation(s)
- Nicolau Beckmann
- Musculoskeletal Diseases Department, Novartis Institutes for BioMedical Research, Basel, Switzerland
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25
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Meerburg JJ, Veerman GDM, Aliberti S, Tiddens HAWM. Diagnosis and quantification of bronchiectasis using computed tomography or magnetic resonance imaging: A systematic review. Respir Med 2020; 170:105954. [PMID: 32843159 DOI: 10.1016/j.rmed.2020.105954] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 03/27/2020] [Accepted: 03/31/2020] [Indexed: 12/27/2022]
Abstract
BACKGROUND Bronchiectasis is an irreversible dilatation of the airways caused by inflammation and infection. To diagnose bronchiectasis in clinical care and to use bronchiectasis as outcome parameter in clinical trials, a radiological definition with exact cut-off values along with image analysis methods to assess its severity are needed. The aim of this study was to review diagnostic criteria and quantification methods for bronchiectasis. METHODS A systematic literature search was performed using Embase, Medline Ovid, Web of Science, Cochrane and Google Scholar. English written, clinical studies that included bronchiectasis as outcome measure and used image quantification methods were selected. Criteria for bronchiectasis, quantification methods, patient demographics, and data on image acquisition were extracted. RESULTS We screened 4182 abstracts, selected 972 full texts, and included 122 studies. The most often used criterion for bronchiectasis was an inner airway-artery ratio ≥1.0 (42%), however no validation studies for this cut-off value were found. Importantly, studies showed that airway-artery ratios are influenced by age. To quantify bronchiectasis, 42 different scoring methods were described. CONCLUSION Different diagnostic criteria for bronchiectasis are being used, but no validation studies were found to support these criteria. To use bronchiectasis as outcome in future studies, validated and age-specific cut-off values are needed.
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Affiliation(s)
- Jennifer J Meerburg
- Department of Paediatric Pulmonology and Allergology, Erasmus Medical Centre -Sophia Children's Hospital, Wytemaweg 80, 3015CN, Rotterdam, the Netherlands; Department of Radiology and Nuclear Medicine, Erasmus Medical Centre, Wytemaweg 80, 3015CN, Rotterdam, the Netherlands.
| | - G D Marijn Veerman
- Department of Medical Oncology, Erasmus MC Cancer Institute, Erasmus Medical Centre, Wytemaweg 80, 3015CN, Rotterdam, the Netherlands.
| | - Stefano Aliberti
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Respiratory Unit and Adult Cystic Fibrosis Center, Dept of Pathophysiology and Transplantation, University of Milan, Milan, Italy.
| | - Harm A W M Tiddens
- Department of Paediatric Pulmonology and Allergology, Erasmus Medical Centre -Sophia Children's Hospital, Wytemaweg 80, 3015CN, Rotterdam, the Netherlands; Department of Radiology and Nuclear Medicine, Erasmus Medical Centre, Wytemaweg 80, 3015CN, Rotterdam, the Netherlands.
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Predictive value of computed tomography scoring systems evolution in adults with cystic fibrosis. Eur Radiol 2020; 30:3634-3640. [PMID: 32128619 DOI: 10.1007/s00330-020-06759-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 02/04/2020] [Accepted: 02/18/2020] [Indexed: 01/27/2023]
Abstract
OBJECTIVES To assess whether the evolution of two consecutive high-resolution computed tomography (HRCT) scores in patients with cystic fibrosis (CF) has prognostic value. METHODS A longitudinal retrospective study was performed to research adult patients with CF. Two consecutive HRCT studies were scored using Bhalla and Brody II scoring scales by two senior radiologists. Annual scoring changes for each scale were calculated and correlated with annual FEV1% decline, with pulmonary exacerbations and number of antibiotic treatments. RESULTS We selected sixty-four adult patients. The median interval between the two HRCTs was 3.88 ± 1.59 years. The mean spirometric values showed dynamic lung volumes lower than the general population; globally, there was a worsening of respiratory function over time. The change in the annual HRCT scores was positive on both scales, indicating a worse structural situation over time. The Brody II scale annual change showed a significant statistical correlation with a decline in the annual FEV1%, exacerbations and number of oral antibiotic treatments. In contrast, for the Bhalla scale, the relationship was moderately inverse with exacerbations and with the number of oral treatments. No statistically significant relationships were found for the change in the annual FEV1% and exacerbations or number of antibiotic treatments. The interobservational and intraobservational agreements were very strong in both scales. CONCLUSIONS The annual evolution of the Brody II HRCT scoring system demonstrated a predictive value and correlated with FEV1% decline, pulmonary exacerbations and oral antibiotic treatments. KEY POINTS • HRCT evolution has prognostic value in cystic fibrosis. • Temporal evolution for the Brody II score is useful for clinical follow-up. • Brody II score changes correlate with FEV1% decline, pulmonary exacerbations and number of antibiotic treatments.
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Guidance for computed tomography (CT) imaging of the lungs for patients with cystic fibrosis (CF) in research studies. J Cyst Fibros 2020; 19:176-183. [DOI: 10.1016/j.jcf.2019.09.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 08/21/2019] [Accepted: 09/01/2019] [Indexed: 12/11/2022]
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Wijker NE, Vidmar S, Grimwood K, Sly PD, Byrnes CA, Carlin JB, Cooper PJ, Robertson CF, Massie RJ, Kemner van de Corput MP, Cheney J, Tiddens HA, Wainwright CE. Early markers of cystic fibrosis structural lung disease: follow-up of the ACFBAL cohort. Eur Respir J 2020; 55:13993003.01694-2019. [DOI: 10.1183/13993003.01694-2019] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 12/30/2019] [Indexed: 12/31/2022]
Abstract
Little is known about early predictors of later cystic fibrosis (CF) structural lung disease. This study examined early predictors of progressive structural lung abnormalities in children who completed the Australasian CF Bronchoalveolar Lavage (ACFBAL) clinical trial at age 5-years and participated in an observational follow-up study (CF-FAB).Eight Australian and New Zealand CF centres participated in CF-FAB and provided follow-up chest computed-tomography (CT) scans for children who had completed the ACFBAL study with baseline scans at age 5-years. CT scans were annotated using PRAGMA-CF scoring. Ordinal regression analysis and linear regression were used to investigate associations between PRAGMA-CF (Perth–Rotterdam Annotated Grid Morphometric Analysis for CF) outcomes at follow-up and variables measured during the ACFBAL study.99 out of 157 ACFBAL children (mean±sd age 13±1.5 years) participated in the CF-FAB study. The probability of bronchiectasis at follow-up increased with airway disease severity on the baseline CT scan. In multiple regression (retaining factors at p<0.05) the extent of bronchiectasis at follow-up was associated with baseline atelectasis (OR 7.2, 95% CI 2.4–22; p≤ 0.001), bronchoalveolar lavage (BAL) log2 interleukin (IL)-8 (OR 1.2, 95% CI 1.05–1.5; p=0.010) and body mass index z-score (OR 0.49, 95% CI 0.24–1.00; p=0.05) at age 5 years. Percentage trapped air at follow-up was associated with BAL log2 IL-8 (coefficient 1.3, 95% CI 0.57–2.1; p<0.001) at age 5 years.The extent of airway disease, atelectasis, airway inflammation and poor nutritional status in early childhood are risk factors for progressive structural lung disease in adolescence.
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Abrami M, Maschio M, Conese M, Confalonieri M, Di Gioia S, Gerin F, Dapas B, Tonon F, Farra R, Murano E, Zanella G, Salton F, Torelli L, Grassi G, Grassi M. Use of low field nuclear magnetic resonance to monitor lung inflammation and the amount of pathological components in the sputum of cystic fibrosis patients. Magn Reson Med 2019; 84:427-436. [PMID: 31788856 DOI: 10.1002/mrm.28115] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 11/17/2019] [Accepted: 11/18/2019] [Indexed: 12/23/2022]
Abstract
PURPOSE To develop a novel approach to monitor lung ventilation/inflammation in cystic fibrosis (CF) patients. Lung assessment in CF patients is relevant given that most patients succumb to respiratory failure. Respiratory functional tests (forced expiratory volume in the first second; FEV1 ) and inflammatory markers are used to test pulmonary ventilation/inflammation, respectively. However, FEV1 is effort dependent and might be uncomfortable for CF patients. Furthermore, inflammatory marker detection is costly and not rapid. To overcome these limitations, we propose the measurement, by means of low field nuclear magnetic resonance, of the spin-spin relaxation time (T2m ) of water hydrogens present in CF patient sputum. In CF sputum, different biological components are pathologically increased and inversely related to lung functionality. Moreover, we showed that these components alter in a dose-dependent manner the T2m in synthetic CF sputum. METHODS Sputum samples were obtained from 42 CF subjects by voluntary expectoration; FEV1 , C-reactive protein (CRP), blood neutrophil counts together with cytokine (tumor necrosis factor alpha [TNFα], interleukin [IL]-1β, IL-4, and vascular endothelial growth factor) quantifications were then evaluated. RESULTS In sputum samples, we observe that T2m directly correlates (rFEV1 = 0.44; P < 10-4 ; 169 samples) with FEV1 . Moreover, T2m inversely correlates with the circulating inflammation markers CRP/neutrophil number (rCRP = -0.44, P < 10-4 ; rNC = -0.37, P < 2 * 10-4 ; 103 and 86 samples, respectively) and with the sputum inflammatory cytokines TNFα/IL-β1 (rTNFα = -0.72, P < 10-4 ; rIL-1β = -0.685, P < 10-4 ; 27 samples). T2m variations also correspond to FEV1 values over time in defined patients. CONCLUSION These findings, together with the fast, reliable, and simple determination of T2m , make our approach a novel tool potentially usable in the real world of CF patients.
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Affiliation(s)
- Michela Abrami
- Department of Engineering and Architecture, University of Trieste, Trieste, Italy
| | - Massimo Maschio
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
| | - Massimo Conese
- Department of Medical and Surgical Sciences, Foggia University, Ospedali Riuniti, Foggia, Italy
| | - Marco Confalonieri
- Pulmonology Department, Cattinara University Hospital, Pulmonology Department, Trieste, Italy
| | - Sante Di Gioia
- Department of Medical and Surgical Sciences, Foggia University, Ospedali Riuniti, Foggia, Italy
| | - Fabio Gerin
- Department of Life Sciences, Cattinara University Hospital, Trieste University, Trieste, Italy
| | - Barbara Dapas
- Department of Life Sciences, Cattinara University Hospital, Trieste University, Trieste, Italy
| | - Federica Tonon
- Department of Life Sciences, Cattinara University Hospital, Trieste University, Trieste, Italy
| | - Rossella Farra
- Department of Life Sciences, Cattinara University Hospital, Trieste University, Trieste, Italy
| | | | - Giada Zanella
- Cattinara University Hospital, Department of Clinical, Surgery and Health Sciences, Trieste, Italy
| | - Francesco Salton
- Pulmonology Department, Cattinara University Hospital, Pulmonology Department, Trieste, Italy
| | - Lucio Torelli
- Cattinara University Hospital, Department of Clinical, Surgery and Health Sciences, Trieste, Italy
| | - Gabriele Grassi
- Department of Life Sciences, Cattinara University Hospital, Trieste University, Trieste, Italy
| | - Mario Grassi
- Department of Engineering and Architecture, University of Trieste, Trieste, Italy
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Benlala I, Hocke F, Macey J, Bui S, Berger P, Laurent F, Dournes G. Quantification of MRI T2-weighted High Signal Volume in Cystic Fibrosis: A Pilot Study. Radiology 2019; 294:186-196. [PMID: 31660805 DOI: 10.1148/radiol.2019190797] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Background In patients with cystic fibrosis (CF), pulmonary structures with high MRI T2 signal intensity relate to inflammatory changes in the lung and bronchi. These areas of pathologic abnormalities can serve as imaging biomarkers. The feasibility of automated quantification is unknown. Purpose To quantify the MRI T2 high-signal-intensity lung volume and T2-weighted volume-intensity product (VIP) by using a black-blood T2-weighted radial fast spin-echo sequence in participants with CF. Materials and Methods Healthy individuals and study participants with CF were prospectively enrolled between January 2017 and November 2017. All participants underwent a lung MRI protocol including T2-weighted radial fast spin-echo sequence. Participants with CF also underwent pulmonary function tests the same day. Participants with CF exacerbation underwent repeat MRI after their treatment with antibiotics. Two observers supervised automated quantification of T2-weighted high-signal-intensity volume (HSV) and T2-weighted VIP independently, and the average score was chosen as consensus. Statistical analysis used the Mann-Whitney test for comparison of medians, correlations used the Spearman test, comparison of paired medians used the Wilcoxon signed rank test, and reproducibility was evaluated by using intraclass correlation coefficient. Results In 10 healthy study participants (median age, 21 years [age range, 18-27 years]; six men) and 12 participants with CF (median age, 18 years [age range, 9-40 years]; eight men), T2-weighted HSV was equal to 0% and 4.1% (range, 0.1%-17%), respectively, and T2-weighted VIP was equal to 0 msec and 303 msec (range, 39-1012 msec), respectively (P < .001). In participants with CF, T2-weighted HSV or T2-weighted VIP were associated with forced expiratory volume in 1 second percentage predicted (ρ = -0.88 and ρ = -0.94, respectively; P < .001). In six participants with CF exacerbation and follow-up after treatment, a decrease in both T2-weighted HSV and T2-weighted VIP was observed (P = .03). The intra- and interobserver reproducibility of MRI were good (intraclass correlation coefficients, >0.99 and >0.99, respectively). Conclusion In patients with cystic fibrosis (CF), automated quantification of lung MRI high-signal-intensity volume was reproducible and correlated with pulmonary function testing severity, and it improved after treatment for CF exacerbation. © RSNA, 2019 Online supplemental material is available for this article. See also the editorial by Revel and Chassagnon in this issue.
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Affiliation(s)
- Ilyes Benlala
- From the Univ. Bordeaux, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, CIC 1401, F-33000 Bordeaux, France (I.B., P.B., F.L., G.D.); Inserm, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, CIC 1401, F-33000 Bordeaux, France (I.B., P.B., F.L., G.D.); and CHU de Bordeaux, Service d'Imagerie Thoracique et Cardiovasculaire, Service des Maladies Respiratoires, Service d'Exploration Fonctionnelle Respiratoire, Unité de Pneumologie Pédiatrique, CIC 1401, F-33600 Pessac, France (I.B., F.H., J.M., S.B., P.B., F.L., G.D.)
| | - François Hocke
- From the Univ. Bordeaux, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, CIC 1401, F-33000 Bordeaux, France (I.B., P.B., F.L., G.D.); Inserm, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, CIC 1401, F-33000 Bordeaux, France (I.B., P.B., F.L., G.D.); and CHU de Bordeaux, Service d'Imagerie Thoracique et Cardiovasculaire, Service des Maladies Respiratoires, Service d'Exploration Fonctionnelle Respiratoire, Unité de Pneumologie Pédiatrique, CIC 1401, F-33600 Pessac, France (I.B., F.H., J.M., S.B., P.B., F.L., G.D.)
| | - Julie Macey
- From the Univ. Bordeaux, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, CIC 1401, F-33000 Bordeaux, France (I.B., P.B., F.L., G.D.); Inserm, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, CIC 1401, F-33000 Bordeaux, France (I.B., P.B., F.L., G.D.); and CHU de Bordeaux, Service d'Imagerie Thoracique et Cardiovasculaire, Service des Maladies Respiratoires, Service d'Exploration Fonctionnelle Respiratoire, Unité de Pneumologie Pédiatrique, CIC 1401, F-33600 Pessac, France (I.B., F.H., J.M., S.B., P.B., F.L., G.D.)
| | - Stéphanie Bui
- From the Univ. Bordeaux, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, CIC 1401, F-33000 Bordeaux, France (I.B., P.B., F.L., G.D.); Inserm, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, CIC 1401, F-33000 Bordeaux, France (I.B., P.B., F.L., G.D.); and CHU de Bordeaux, Service d'Imagerie Thoracique et Cardiovasculaire, Service des Maladies Respiratoires, Service d'Exploration Fonctionnelle Respiratoire, Unité de Pneumologie Pédiatrique, CIC 1401, F-33600 Pessac, France (I.B., F.H., J.M., S.B., P.B., F.L., G.D.)
| | - Patrick Berger
- From the Univ. Bordeaux, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, CIC 1401, F-33000 Bordeaux, France (I.B., P.B., F.L., G.D.); Inserm, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, CIC 1401, F-33000 Bordeaux, France (I.B., P.B., F.L., G.D.); and CHU de Bordeaux, Service d'Imagerie Thoracique et Cardiovasculaire, Service des Maladies Respiratoires, Service d'Exploration Fonctionnelle Respiratoire, Unité de Pneumologie Pédiatrique, CIC 1401, F-33600 Pessac, France (I.B., F.H., J.M., S.B., P.B., F.L., G.D.)
| | - François Laurent
- From the Univ. Bordeaux, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, CIC 1401, F-33000 Bordeaux, France (I.B., P.B., F.L., G.D.); Inserm, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, CIC 1401, F-33000 Bordeaux, France (I.B., P.B., F.L., G.D.); and CHU de Bordeaux, Service d'Imagerie Thoracique et Cardiovasculaire, Service des Maladies Respiratoires, Service d'Exploration Fonctionnelle Respiratoire, Unité de Pneumologie Pédiatrique, CIC 1401, F-33600 Pessac, France (I.B., F.H., J.M., S.B., P.B., F.L., G.D.)
| | - Gaël Dournes
- From the Univ. Bordeaux, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, CIC 1401, F-33000 Bordeaux, France (I.B., P.B., F.L., G.D.); Inserm, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, CIC 1401, F-33000 Bordeaux, France (I.B., P.B., F.L., G.D.); and CHU de Bordeaux, Service d'Imagerie Thoracique et Cardiovasculaire, Service des Maladies Respiratoires, Service d'Exploration Fonctionnelle Respiratoire, Unité de Pneumologie Pédiatrique, CIC 1401, F-33600 Pessac, France (I.B., F.H., J.M., S.B., P.B., F.L., G.D.)
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Loebinger MR, Polverino E, Blasi F, Elborn SJ, Chalmers JD, Tiddens HA, Goossens H, Tunney M, Zhou W, Angyalosi G, Hill AT, Haworth CS. Efficacy and safety of tobramycin inhalation powder in bronchiectasis patients with P. aeruginosa infection: Design of a dose-finding study (iBEST-1). Pulm Pharmacol Ther 2019; 58:101834. [PMID: 31433997 DOI: 10.1016/j.pupt.2019.101834] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 08/17/2019] [Indexed: 01/26/2023]
Abstract
In patients with bronchiectasis (BE), infection with Pseudomonas aeruginosa (Pa) results in disease progression, frequent pulmonary exacerbations and lung function decline. However, at present, no inhaled antibiotics have been approved for the treatment of these patients. Tobramycin inhalation powder (TIP), approved for treatment of Pa infection in cystic fibrosis, could be a promising candidate. We aimed to assess effective and well-tolerated doses and regimens of TIP in BE patients with Pa infection. In this phase II, double-blind, placebo-controlled, randomised study, three different daily doses of TIP are administered either as continuous or cyclical regimens. The study protocol comprises 7-28 days of screening, 112 days of double-blind treatment and 56 days of follow-up. The plan was to enrol 180 patients (aged ≥18 years) with BE, documented Pa infection and a history of exacerbations. The primary outcome is change in sputum Pa density from baseline. Key secondary outcomes include number of pulmonary exacerbations, use of antipseudomonal antibiotics, serum and sputum tobramycin concentrations, quality of life and safety. Exploratory endpoints include lung clearance index, sputum inflammatory markers and microbiome analysis. As of October 2018, 107/180 patients were enrolled at 34 sites (six countries) following which recruitment was closed for administrative reasons unrelated to safety findings. Despite a reduced sample size from initially planned enrolment, the unique design may inform the benefit-risk profile of TIP in BE patients with chronic Pa infection. Moreover, several novel and exploratory endpoints (lung clearance index, inflammatory biomarkers, lung microbiome), will contribute to the advancement of research in this area.
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Affiliation(s)
- Michael R Loebinger
- Host Defence Unit, Royal Brompton and Harefield NHS Foundation Trust, London, United Kingdom; Imperial College London, London, United Kingdom.
| | - Eva Polverino
- Respiratory Disease Department, Vall d' Hebron University Hospital - VHIR, CIBER, Barcelona, Spain
| | - Francesco Blasi
- Internal Medicine Department, Respiratory Unit and Adult Cystic Fibrosis Center, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Stuart J Elborn
- Halo Research Group, Centre for Experimental Medicine, Queen's University Belfast, Belfast, United Kingdom; Imperial College and Royal Brompton Hospital and Harefield NHS Foundation Trust, London, United Kingdom
| | - James D Chalmers
- Scottish Centre for Respiratory Research, University of Dundee, Ninewells Hospital and Medical School, Dundee, Scotland, United Kingdom
| | - Harm Awm Tiddens
- Department of Paediatric Pulmonology and Allergology, Erasmus Medical Centre Sophia Children's Hospital, Rotterdam, the Netherlands; Department of Radiology and Nuclear Medicine, Erasmus Medical Centre Sophia Children's Hospital, Rotterdam, the Netherlands
| | - Herman Goossens
- Department of Clinical Microbiology, University Hospital Antwerp, Antwerp, Belgium
| | - Michael Tunney
- Halo Research Group, School of Pharmacy, Queen's University Belfast, Belfast, United Kingdom
| | | | | | - Adam T Hill
- Respiratory Medicine, Royal Infirmary of Edinburgh, and University of Edinburgh, Edinburgh, United Kingdom
| | - Charles S Haworth
- Cambridge Centre for Lung Infection, Royal Papworth Hospital NHS Foundation Trust, Cambridge, United Kingdom
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Wu AC, Kiley JP, Noel PJ, Amur S, Burchard EG, Clancy JP, Galanter J, Inada M, Jones TK, Kropski JA, Loyd JE, Nogee LM, Raby BA, Rogers AJ, Schwartz DA, Sin DD, Spira A, Weiss ST, Young LR, Himes BE. Current Status and Future Opportunities in Lung Precision Medicine Research with a Focus on Biomarkers. An American Thoracic Society/National Heart, Lung, and Blood Institute Research Statement. Am J Respir Crit Care Med 2019; 198:e116-e136. [PMID: 30640517 DOI: 10.1164/rccm.201810-1895st] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Thousands of biomarker tests are either available or under development for lung diseases. In many cases, adoption of these tests into clinical practice is outpacing the generation and evaluation of sufficient data to determine clinical utility and ability to improve health outcomes. There is a need for a systematically organized report that provides guidance on how to understand and evaluate use of biomarker tests for lung diseases. METHODS We assembled a diverse group of clinicians and researchers from the American Thoracic Society and leaders from the National Heart, Lung, and Blood Institute with expertise in various aspects of precision medicine to review the current status of biomarker tests in lung diseases. Experts summarized existing biomarker tests that are available for lung cancer, pulmonary arterial hypertension, idiopathic pulmonary fibrosis, asthma, chronic obstructive pulmonary disease, sepsis, acute respiratory distress syndrome, cystic fibrosis, and other rare lung diseases. The group identified knowledge gaps that future research studies can address to efficiently translate biomarker tests into clinical practice, assess their cost-effectiveness, and ensure they apply to diverse, real-life populations. RESULTS We found that the status of biomarker tests in lung diseases is highly variable depending on the disease. Nevertheless, biomarker tests in lung diseases show great promise in improving clinical care. To efficiently translate biomarkers into tests used widely in clinical practice, researchers need to address specific clinical unmet needs, secure support for biomarker discovery efforts, conduct analytical and clinical validation studies, ensure tests have clinical utility, and facilitate appropriate adoption into routine clinical practice. CONCLUSIONS Although progress has been made toward implementation of precision medicine for lung diseases in clinical practice in certain settings, additional studies focused on addressing specific unmet clinical needs are required to evaluate the clinical utility of biomarkers; ensure their generalizability to diverse, real-life populations; and determine their cost-effectiveness.
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Tan JK, Banton G, Minutillo C, Hall GL, Wilson A, Murray C, Nathan EA, Verheggen M, Ramsay J, Samnakay N, Dickinson J. Long-term medical and psychosocial outcomes in congenital diaphragmatic hernia survivors. Arch Dis Child 2019; 104:761-767. [PMID: 30877092 DOI: 10.1136/archdischild-2018-316091] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 02/01/2019] [Accepted: 02/21/2019] [Indexed: 01/23/2023]
Abstract
OBJECTIVE Survival rates for congenital diaphragmatic hernia (CDH) are increasing. The long-term outcomes of CDH survivors were compared with a healthy control group to assess the morbidity for guidance of antenatal counselling and long-term follow-up programmes. PARTICIPANTS AND DESIGN Participants born with CDH in Western Australia 1993-2008 were eligible with matched controls from the general population. Participants had comprehensive lung function tests, echocardiogram, low-dose chest CT scan and completed a Strengths and Difficulties Questionnaire (SDQ) and quality of life (QOL) questionnaire. RESULTS 34 matched case-control pairs were recruited. Demographic data between groups were similar. Cases were smaller at follow-up (weight Z-score of -0.2vs0.3; p=0.03; height Z-score of -0.3vs0.6; p=0.01). Cases had lower mean Z-scores for forced expiratory volume in 1 s (FEV1) (-1.49 vs -0.01; p=0.004), FEV1/forced vital capacity (-1.92 vs -1.2; p=0.009) and forced expiratory flow at 25-75% (FEF25-75) (-1.18vs0.23; p=0.007). Cases had significantly worse respiratory mechanics using forced oscillation technique. Subpleural triangles architectural distortion, linear opacities and scoliosis on chest CT were significantly higher in cases. Prosthetic patch requirement was associated with worse lung mechanics and peak cough flow. Cases had significantly higher rates of gastro-oesophageal reflux disease (GORD) and GORD medication usage. Developmental delay was significantly higher in cases. More cases had a total difficulties score in the high to very high range (25% vs 0%, p=0.03) on the SDQ and reported lower objective QOL scores (70.2 vs 79.8, p=0.02). CONCLUSION Survivors of CDH may have significant adverse long-term medical and psychosocial issues that would be better recognised and managed in a multidisciplinary clinic.
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Affiliation(s)
- Jason K Tan
- Neonatal Intensive Care Unit, Perth Children's Hospital, Perth, Western Australia, Australia
| | - Georgia Banton
- Children's Lung Health, Telethon Kids Institute, Perth, Western Australia, Australia
| | - Corrado Minutillo
- Neonatal Intensive Care Unit, Perth Children's Hospital, Perth, Western Australia, Australia
| | - Graham L Hall
- Children's Lung Health, Telethon Kids Institute, Perth, Western Australia, Australia.,School of Physiotherapy and Exercise Science, Curtin University - Perth City Campus, Perth, Western Australia, Australia
| | - Andrew Wilson
- School of Physiotherapy and Exercise Science, Curtin University - Perth City Campus, Perth, Western Australia, Australia.,Department of Respiratory Medicine, Perth Children's Hospital, Perth, Western Australia, Australia
| | - Conor Murray
- Department of Radiology, Perth Children's Hospital, Perth, Western Australia, Australia
| | - Elizabeth A Nathan
- Division of Obstetrics and Gynaecology, University of Western Australia Faculty of Medicine Dentistry and Health Sciences, Crawley, Australia
| | - Maureen Verheggen
- Department of Respiratory Medicine, Perth Children's Hospital, Perth, Western Australia, Australia
| | - James Ramsay
- Department of Cardiology, Perth Children's Hospital, Perth, Western Australia, Australia
| | - Naeem Samnakay
- Division of Surgery, University of Western Australia Faculty of Health and Medical Sciences, Perth, Western Australia, Australia
| | - Jan Dickinson
- Division of Obstetrics and Gynaecology, University of Western Australia Faculty of Health and Medical Sciences, Perth, Western Australia, Australia
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Allenby MC, Woodruff MA. Biofabrication of personalised anatomical models and tools for the clinic. J Cyst Fibros 2019; 18:161-162. [DOI: 10.1016/j.jcf.2019.02.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Newbegin K, Pilkington K, Shanthikumar S, Ranganathan S. Clinical utility of surveillance computed tomography scans in infants with cystic fibrosis. Pediatr Pulmonol 2018; 53:1387-1390. [PMID: 29984485 DOI: 10.1002/ppul.24132] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 06/21/2018] [Indexed: 11/07/2022]
Abstract
BACKGROUND In cystic fibrosis (CF), irreversible lung disease arises in early life, and is often asymptomatic and unrecognised. Chest computed tomography (CT) scans have been used to detect asymptomatic lung disease in research; however, the clinical utility of chest CT is unknown. This study aimed to determine the effect of surveillance CT in early life on the clinical management of patients with CF. WORKING HYPOTHESIS Surveillance CT in early life changes the management of patients with CF. METHODS A medical record review of patients in the AREST-CF cohort who had chest CT at 1 and 3 years of age was performed. Information extracted included CT scan findings and the effect of CT results on clinical management. RESULTS The chest CT scans and records of 50 subjects with CF were reviewed. The majority of CT scans (n = 75; 75%) were abnormal. N = 31 (31%) of scans overall led to a direct change in management. The number of CT scans needed to be performed to lead to a treatment change was 3.2. The majority (n = 18, 58%) of changes in management were prompted by the finding of bronchiectasis. CONCLUSION To the authors knowledge, this is the first study to highlight that early life surveillance CT frequently results in changes in clinical management, and hence may have a role beyond research and in routine care. If this can be shown to contribute to improved outcomes (such as reduced rates of bronchiectasis), then, as radiation doses diminish, chest CT could have an important clinical role.
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Affiliation(s)
- Katy Newbegin
- Respiratory and Sleep Medicine, Royal Children's Hospital, Melbourne, Victoria, Australia
| | - Katie Pilkington
- Respiratory and Sleep Medicine, Royal Children's Hospital, Melbourne, Victoria, Australia.,Department of Paediatrics, The University of Melbourne, Melbourne, Victoria, Australia
| | - Shivanthan Shanthikumar
- Respiratory and Sleep Medicine, Royal Children's Hospital, Melbourne, Victoria, Australia.,Department of Paediatrics, The University of Melbourne, Melbourne, Victoria, Australia.,Respiratory Diseases, Murdoch Children's Research Institute, Melbourne, Victoria, Australia
| | - Sarath Ranganathan
- Respiratory and Sleep Medicine, Royal Children's Hospital, Melbourne, Victoria, Australia.,Department of Paediatrics, The University of Melbourne, Melbourne, Victoria, Australia.,Respiratory Diseases, Murdoch Children's Research Institute, Melbourne, Victoria, Australia
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Saglani S. Lung function in primary ciliary dyskinesia: breaking the myth that this is a mild disease. Eur Respir J 2018; 52:52/2/1801365. [PMID: 30139762 DOI: 10.1183/13993003.01365-2018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 07/25/2018] [Indexed: 01/18/2023]
Affiliation(s)
- Sejal Saglani
- National Heart and Lung Institute, Imperial College London, London, UK
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Dittrich AS, Kühbandner I, Gehrig S, Rickert-Zacharias V, Twigg M, Wege S, Taggart CC, Herth F, Schultz C, Mall MA. Elastase activity on sputum neutrophils correlates with severity of lung disease in cystic fibrosis. Eur Respir J 2018; 51:13993003.01910-2017. [PMID: 29545279 DOI: 10.1183/13993003.01910-2017] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 02/14/2018] [Indexed: 01/06/2023]
Abstract
Neutrophil elastase (NE) is a key risk factor for severity of cystic fibrosis (CF) lung disease. Recent studies identified increased NE activity on the surface of airway neutrophils from CF-like mice and patients with CF. However, the role of surface-bound NE in CF lung disease remains unknown. We determined the relationship between surface-bound NE activity and severity of lung disease in CF.Surface-bound NE activity was measured on sputum neutrophils from 35 CF patients and eight healthy controls using novel lipidated Förster resonance energy transfer reporters and correlated with free NE activity, neutrophil counts, interleukin-8, myeloperoxidase and antiproteases in sputum supernatant, and with lung function parameters.Surface-bound NE activity was increased in CF compared to healthy controls (p<0.01) and correlated with free NE activity (p<0.05) and other inflammation markers (p<0.001). Surface-bound and free NE activity correlated with forced expiratory volume in 1 s % predicted (p<0.01 and p<0.05), but only surface-bound NE activity correlated with plethysmographic functional residual capacity % pred (p<0.01) in patients with CF.We demonstrate that surface-bound NE activity on airway neutrophils correlates with severity of lung disease in patients with CF. Our results suggest that surface-bound NE activity may play an important role in the pathogenesis and serve as novel biomarker in CF lung disease.
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Affiliation(s)
- A Susanne Dittrich
- Dept of Translational Pulmonology and Division of Paediatric Pulmonology and Allergy and Cystic Fibrosis Centre, University of Heidelberg, Heidelberg, Germany.,Translational Lung Research Centre Heidelberg (TLRC), German Centre for Lung Research (DZL), Heidelberg, Germany.,Dept of Pneumology and Critical Care Medicine, Thoraxklinik at the University Hospital Heidelberg, Heidelberg, Germany.,Molecular Medicine Partnership Unit (MMPU), University of Heidelberg and European Molecular Biology Laboratory, Heidelberg, Germany
| | - Iris Kühbandner
- Dept of Translational Pulmonology and Division of Paediatric Pulmonology and Allergy and Cystic Fibrosis Centre, University of Heidelberg, Heidelberg, Germany.,Translational Lung Research Centre Heidelberg (TLRC), German Centre for Lung Research (DZL), Heidelberg, Germany.,Dept of Pneumology and Critical Care Medicine, Thoraxklinik at the University Hospital Heidelberg, Heidelberg, Germany
| | - Stefanie Gehrig
- Dept of Translational Pulmonology and Division of Paediatric Pulmonology and Allergy and Cystic Fibrosis Centre, University of Heidelberg, Heidelberg, Germany.,Translational Lung Research Centre Heidelberg (TLRC), German Centre for Lung Research (DZL), Heidelberg, Germany.,Molecular Medicine Partnership Unit (MMPU), University of Heidelberg and European Molecular Biology Laboratory, Heidelberg, Germany.,Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Verena Rickert-Zacharias
- Dept of Translational Pulmonology and Division of Paediatric Pulmonology and Allergy and Cystic Fibrosis Centre, University of Heidelberg, Heidelberg, Germany.,Translational Lung Research Centre Heidelberg (TLRC), German Centre for Lung Research (DZL), Heidelberg, Germany.,Molecular Medicine Partnership Unit (MMPU), University of Heidelberg and European Molecular Biology Laboratory, Heidelberg, Germany.,Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Matthew Twigg
- Airway Innate Immunity Group (AiIR), Centre for Experimental Medicine, Queen's University Belfast, Belfast, UK
| | - Sabine Wege
- Translational Lung Research Centre Heidelberg (TLRC), German Centre for Lung Research (DZL), Heidelberg, Germany.,Dept of Pneumology and Critical Care Medicine, Thoraxklinik at the University Hospital Heidelberg, Heidelberg, Germany
| | - Clifford C Taggart
- Airway Innate Immunity Group (AiIR), Centre for Experimental Medicine, Queen's University Belfast, Belfast, UK
| | - Felix Herth
- Translational Lung Research Centre Heidelberg (TLRC), German Centre for Lung Research (DZL), Heidelberg, Germany.,Dept of Pneumology and Critical Care Medicine, Thoraxklinik at the University Hospital Heidelberg, Heidelberg, Germany
| | - Carsten Schultz
- Translational Lung Research Centre Heidelberg (TLRC), German Centre for Lung Research (DZL), Heidelberg, Germany.,Molecular Medicine Partnership Unit (MMPU), University of Heidelberg and European Molecular Biology Laboratory, Heidelberg, Germany.,Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Marcus A Mall
- Dept of Translational Pulmonology and Division of Paediatric Pulmonology and Allergy and Cystic Fibrosis Centre, University of Heidelberg, Heidelberg, Germany .,Translational Lung Research Centre Heidelberg (TLRC), German Centre for Lung Research (DZL), Heidelberg, Germany.,Molecular Medicine Partnership Unit (MMPU), University of Heidelberg and European Molecular Biology Laboratory, Heidelberg, Germany.,Dept of Paediatric Pulmonology and Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany.,Berlin Institute of Health (BIH), Berlin, Germany
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Tiddens HAWM, Kuo W, van Straten M, Ciet P. Paediatric lung imaging: the times they are a-changin'. Eur Respir Rev 2018; 27:27/147/170097. [PMID: 29491035 DOI: 10.1183/16000617.0097-2017] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 12/13/2017] [Indexed: 02/06/2023] Open
Abstract
Until recently, functional tests were the most important tools for the diagnosis and monitoring of lung diseases in the paediatric population. Chest imaging has gained considerable importance for paediatric pulmonology as a diagnostic and monitoring tool to evaluate lung structure over the past decade. Since January 2016, a large number of papers have been published on innovations in chest computed tomography (CT) and/or magnetic resonance imaging (MRI) technology, acquisition techniques, image analysis strategies and their application in different disease areas. Together, these papers underline the importance and potential of chest imaging and image analysis for today's paediatric pulmonology practice. The focus of this review is chest CT and MRI, as these are, and will be, the modalities that will be increasingly used by most practices. Special attention is given to standardisation of image acquisition, image analysis and novel applications in chest MRI. The publications discussed underline the need for the paediatric pulmonology community to implement and integrate state-of-the-art imaging and image analysis modalities into their structure-function laboratory for the benefit of their patients.
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Affiliation(s)
- Harm A W M Tiddens
- Pediatric Pulmonology and Allergology, Erasmus MC - Sophia Children's Hospital, University Medical Centre, Rotterdam, The Netherlands .,Radiology and Nuclear Medicine, Erasmus University Medical Center - Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Wieying Kuo
- Pediatric Pulmonology and Allergology, Erasmus MC - Sophia Children's Hospital, University Medical Centre, Rotterdam, The Netherlands.,Radiology and Nuclear Medicine, Erasmus University Medical Center - Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Marcel van Straten
- Radiology and Nuclear Medicine, Erasmus University Medical Center - Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Pierluigi Ciet
- Pediatric Pulmonology and Allergology, Erasmus MC - Sophia Children's Hospital, University Medical Centre, Rotterdam, The Netherlands.,Radiology and Nuclear Medicine, Erasmus University Medical Center - Sophia Children's Hospital, Rotterdam, The Netherlands
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Abstract
INTRODUCTION Cystic fibrosis (CF) is a genetic disorder that results in a multi-organ disease with progressive respiratory decline that ultimately leads to premature death. CF is caused by mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene, which codes for the CFTR anion channel. Established CF treatments target downstream manifestations of the primary genetic defect, including pulmonary and nutritional interventions. Areas covered: CFTR modulators are novel therapies that improve the function of CFTR, and have been approved in the past five years to mitigate the effects of several CF-disease causing mutations. This review summarizes currently approved CFTR modulators and discusses emerging modulator therapies in phase II and III clinical trials described on clinical trials.gov as of April, 2017. Results of relevant trials reported in peer-reviewed journals in Pubmed, scientific conference abstracts and sponsor press releases available as of November, 2017 are included. Expert opinion: The current scope of CF therapeutic development is robust and CFTR modulators have demonstrated significant benefit to patients with specific CFTR mutations. We anticipate that in the future healthcare providers will be faced with a different treatment paradigm, initiating CFTR-directed therapies well before the onset of progressive lung disease.
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Affiliation(s)
- Kristin M Hudock
- a Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine , University of Cincinnati , Cincinnati , OH , USA.,b Division of Pulmonary Biology, Department of Pediatrics , Cincinnati Children's Hospital Medical Center , Cincinnati , OH , USA
| | - John Paul Clancy
- c Division of Pulmonary Medicine, Department of Pediatrics , Cincinnati Children's Hospital Medical Center , Cincinnati , OH , USA
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Rosenow T. Quantification of CT bronchiectasis and its relationship to ventilation in cystic fibrosis. Thorax 2017; 73:4. [DOI: 10.1136/thoraxjnl-2017-210917] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Abrami M, Ascenzioni F, Di Domenico EG, Maschio M, Ventura A, Confalonieri M, Di Gioia S, Conese M, Dapas B, Grassi G, Grassi M. A novel approach based on low-field NMR for the detection of the pathological components of sputum in cystic fibrosis patients. Magn Reson Med 2017; 79:2323-2331. [PMID: 28833401 DOI: 10.1002/mrm.26876] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 07/26/2017] [Accepted: 07/27/2017] [Indexed: 12/12/2022]
Abstract
PURPOSE Development of a reliable, simple method to monitor lung condition in cystic fibrosis (CF) patients. Lung functionality assessment in CF patients is relevant, as most of them still die of respiratory failure. In lung mucus (sputum) of CF patients, components such as proteins, biopolymers, DNA, bacteria, and mucin are pathologically increased. As lung functionality is related to the amount of the pathological components in the sputum, their determination can help clinicians in monitoring lung condition and planning therapy. METHODS Low-field NMR was used to evaluate the variation of the relaxation time (T2m ) of the water hydrogens present in CF sputum in relation to the amounts of the pathological components. Low-field NMR was tested in artificial samples (mucin or alginates), then in conditional sputum (saliva from healthy volunteers, added by different amounts of the pathological components), and finally in 12 patients' sputums, in which T2m was correlated to a commonly used lung monitoring test (i.e., forced expiratory volume in the first second). RESULTS T2m significantly (P < 0.05) differed between samples with and without pathological components and between healthy and CF patients (P < 0.05), in which T2m correlated (r = 0.87) with FEV1 . CONCLUSIONS The presented method can potentially become a valuable lung-monitoring tool in CF patients. Magn Reson Med 79:2323-2331, 2018. © 2017 International Society for Magnetic Resonance in Medicine.
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Affiliation(s)
- Michela Abrami
- Department of Life Sciences, Cattinara University Hospital, Trieste University, Trieste, Italy
| | - Fiorentina Ascenzioni
- Department of Biology and Biotechnology, "C. Darwin" Sapienza University of Rome, Rome, Italy
| | - Enea Gino Di Domenico
- Department of Biology and Biotechnology, "C. Darwin" Sapienza University of Rome, Rome, Italy
| | | | - Alessandro Ventura
- University Department of Clinical, Medical, Surgical and Health Sciences, Trieste University, IRCCS "Burlo Garofolo" Pediatric Institute, Trieste, Italy
| | | | - Sante Di Gioia
- Department of Medical and Surgical Sciences, Foggia University, Foggia, Italy
| | - Massimo Conese
- Department of Medical and Surgical Sciences, Foggia University, Foggia, Italy
| | - Barbara Dapas
- Department of Life Sciences, Cattinara University Hospital, Trieste University, Trieste, Italy
| | - Gabriele Grassi
- Department of Life Sciences, Cattinara University Hospital, Trieste University, Trieste, Italy
| | - Mario Grassi
- Department of Engineering and Architecture, University of Trieste, Trieste, Italy
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Flume PA, VanDevanter DR. The challenges of maintaining momentum in CF drug development and approval - Commentary. J Cyst Fibros 2017; 16:170-171. [DOI: 10.1016/j.jcf.2017.01.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Wielpütz MO, Mall MA. MRI accelerating progress in functional assessment of cystic fibrosis lung disease. J Cyst Fibros 2017; 16:165-167. [DOI: 10.1016/j.jcf.2016.12.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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