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Glessgen CG, Boulougouri M, Vallée JP, Noble S, Platon A, Poletti PA, Paul JF, Deux JF. Artificial intelligence-based opportunistic detection of coronary artery stenosis on aortic computed tomography angiography in emergency department patients with acute chest pain. Eur Heart J Open 2023; 3:oead088. [PMID: 37744954 PMCID: PMC10516619 DOI: 10.1093/ehjopen/oead088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 08/08/2023] [Accepted: 09/06/2023] [Indexed: 09/26/2023]
Abstract
Aims To evaluate a deep-learning model (DLM) for detecting coronary stenoses in emergency room patients with acute chest pain (ACP) explored with electrocardiogram-gated aortic computed tomography angiography (CTA) to rule out aortic dissection. Methods and results This retrospective study included 217 emergency room patients (41% female, mean age 67.2 years) presenting with ACP and evaluated by aortic CTA at our institution. Computed tomography angiography was assessed by two readers, who rated the coronary arteries as 1 (no stenosis), 2 (<50% stenosis), or 3 (≥50% stenosis). Computed tomography angiography was categorized as high quality (HQ), if all three main coronary arteries were analysable and low quality (LQ) otherwise. Curvilinear coronary images were rated by a DLM using the same system. Per-patient and per-vessel analyses were conducted. One hundred and twenty-one patients had HQ and 96 LQ CTA. Sensitivity, specificity, positive predictive value, negative predictive value (NPV), and accuracy of the DLM in patients with high-quality image for detecting ≥50% stenoses were 100, 62, 59, 100, and 75% at the patient level and 98, 79, 57, 99, and 84% at the vessel level, respectively. Sensitivity was lower (79%) for detecting ≥50% stenoses at the vessel level in patients with low-quality image. Diagnostic accuracy was 84% in both groups. All 12 patients with acute coronary syndrome (ACS) and stenoses by invasive coronary angiography (ICA) were rated 3 by the DLM. Conclusion A DLM demonstrated high NPV for significant coronary artery stenosis in patients with ACP. All patients with ACS and stenoses by ICA were identified by the DLM.
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Affiliation(s)
- Carl G Glessgen
- Department of Radiology, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, Geneva 1205, Switzerland
| | - Marianthi Boulougouri
- Department of Radiology, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, Geneva 1205, Switzerland
| | - Jean-Paul Vallée
- Department of Radiology, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, Geneva 1205, Switzerland
| | - Stéphane Noble
- Department of Cardiology, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, Geneva 1205, Switzerland
| | - Alexandra Platon
- Department of Radiology, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, Geneva 1205, Switzerland
| | - Pierre-Alexandre Poletti
- Department of Radiology, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, Geneva 1205, Switzerland
| | - Jean-François Paul
- Department of Radiology, Cardiac Imaging, Institut Mutualiste Montsouris, Paris 75014, France
| | - Jean-François Deux
- Department of Radiology, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, Geneva 1205, Switzerland
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Platon A, Constantin C, Zamorani Bianchi MP, Becker M, Vallée JP, Challande P, Rubbia-Brandt L, Poletti PA. Early MRI termination with major impact on the radiological interpretation: The experience of a large university hospital. Eur J Radiol 2023; 161:110751. [PMID: 36893680 DOI: 10.1016/j.ejrad.2023.110751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/31/2023] [Accepted: 02/20/2023] [Indexed: 02/25/2023]
Abstract
PURPOSE To report the incidence of early magnetic resonance imaging (MRI) terminations and analyse their risk factors in a large university hospital. METHOD All consecutive patients aged > 16 years who underwent an MRI over a 14-month period were included. The following parameters were collected: demographics, in- or outpatient, history of claustrophobia, anatomical region investigated, and early MRI termination along with its cause. The potential link between these parameters and early MRI termination was statistically analysed. RESULTS Overall, 22,566MRIs were performed (10,792 [48%] men and 11,774[52%] women, mean age: 57 [range: 16-103] years). Early MRI termination was reported in 183 (0.8%) patients (99 men and 84 women, mean age: 63 years). Of these early terminations, 103 (56%) were due to claustrophobia and 80 (44%) to other causes. Early terminations were more common in inpatients than outpatients (1.2% vs. 0.6%, p < 0.001), for both claustrophobia- and non-claustrophobia-related reasons. A prior history of claustrophobia was strongly associated with claustrophobia-related early termination (6.6% vs. 0.2%, p = 0.0001). Non-claustrophobia-related early terminations were significantly more common (0.6% vs. 0.2%) in elderly patients (>65 years old) than in younger ones. No other parameter was significantly associated with early termination. CONCLUSIONS Early MRI termination is currently rare. The main risk factors for claustrophobia-related terminations comprised a prior history of claustrophobia, and examinations in inpatients. Non-claustrophobia-related early terminations were more common in both elderly patients and inpatients.
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Affiliation(s)
- Alexandra Platon
- Division of Radiology, Diagnostic Department, Geneva University Hospitals, Geneva, Switzerland
| | - Christophe Constantin
- Division of Radiology, Diagnostic Department, Geneva University Hospitals, Geneva, Switzerland
| | | | - Minerva Becker
- Division of Radiology, Diagnostic Department, Geneva University Hospitals, Geneva, Switzerland
| | - Jean-Paul Vallée
- Division of Radiology, Diagnostic Department, Geneva University Hospitals, Geneva, Switzerland
| | - Pascal Challande
- Division of Radiology, Diagnostic Department, Geneva University Hospitals, Geneva, Switzerland
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Aslam I, Aamir F, Kassai M, Crowe LA, Poletti PA, de Seigneux S, Moll S, Berchtold L, Vallée JP. Validation of automatically measured T1 map cortico-medullary difference (ΔT1) for eGFR and fibrosis assessment in allograft kidneys. PLoS One 2023; 18:e0277277. [PMID: 36791140 PMCID: PMC9931131 DOI: 10.1371/journal.pone.0277277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 10/24/2022] [Indexed: 02/16/2023] Open
Abstract
MRI T1-mapping is an important non-invasive tool for renal diagnosis. Previous work shows that ΔT1 (cortex-medullary difference in T1) has significant correlation with interstitial fibrosis in chronic kidney disease (CKD) allograft patients. However, measuring cortico-medullary values by manually drawing ROIs over cortex and medulla (a gold standard method) is challenging, time-consuming, subjective and requires human training. Moreover, such subjective ROI placement may also affect the work reproducibility. This work proposes a deep learning-based 2D U-Net (RCM U-Net) to auto-segment the renal cortex and medulla of CKD allograft kidney T1 maps. Furthermore, this study presents a correlation of automatically measured ΔT1 values with eGFR and percentage fibrosis in allograft kidneys. Also, the RCM U-Net correlation results are compared with the manual ROI correlation analysis. The RCM U-Net has been trained and validated on T1 maps from 40 patients (n = 2400 augmented images) and tested on 10 patients (n = 600 augmented images). The RCM U-Net segmentation results are compared with the standard VGG16, VGG19, ResNet34 and ResNet50 networks with U-Net as backbone. For clinical validation of the RCM U-Net segmentation, another set of 114 allograft kidneys patient's cortex and medulla were automatically segmented to measure the ΔT1 values and correlated with eGFR and fibrosis. Overall, the RCM U-Net showed 50% less Mean Absolute Error (MAE), 16% better Dice Coefficient (DC) score and 12% improved results in terms of Sensitivity (SE) over conventional CNNs (i.e. VGG16, VGG19, ResNet34 and ResNet50) while the Specificity (SP) and Accuracy (ACC) did not show significant improvement (i.e. 0.5% improvement) for both cortex and medulla segmentation. For eGFR and fibrosis assessment, the proposed RCM U-Net correlation coefficient (r) and R-square (R2) was better correlated (r = -0.2, R2 = 0.041 with p = 0.039) to eGFR than manual ROI values (r = -0.19, R2 = 0.037 with p = 0.051). Similarly, the proposed RCM U-Net had noticeably better r and R2 values (r = 0.25, R2 = 0.065 with p = 0.007) for the correlation with the renal percentage fibrosis than the Manual ROI results (r = 0.3, R2 = 0.091 and p = 0.0013). Using a linear mixed model, T1 was significantly higher in the medulla than in the cortex (p<0.0001) and significantly lower in patients with cellular rejection when compared to both patients without rejection and those with humoral rejection (p<0.001). There was no significant difference in T1 between patients with and without humoral rejection (p = 0.43), nor between the types of T1 measurements (Gold standard manual versus automated RCM U-Net) (p = 0.7). The cortico-medullary area ratio measured by the RCM U-Net was significantly increased in case of cellular rejection by comparison to humoral rejection (1.6 +/- 0.39 versus 0.99 +/- 0.32, p = 0.019). In conclusion, the proposed RCM U-Net provides more robust auto-segmented cortex and medulla than the other standard CNNs allowing a good correlation of ΔT1 with eGFR and fibrosis as reported in literature as well as the differentiation of cellular and humoral transplant rejection. Therefore, the proposed approach is a promising alternative to the gold standard manual ROI method to measure T1 values without user interaction, which helps to reduce analysis time and improves reproducibility.
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Affiliation(s)
- Ibtisam Aslam
- Service of Radiology, University Hospital of Geneva and Faculty of Medicine, University of Geneva, Geneva, Switzerland
- Medical Image Processing Research Group (MIPRG), Department of Electrical & Computer Engineering, COMSATS University Islamabad, Islamabad, Pakistan
| | - Fariha Aamir
- Medical Image Processing Research Group (MIPRG), Department of Electrical & Computer Engineering, COMSATS University Islamabad, Islamabad, Pakistan
| | - Miklós Kassai
- Service of Radiology, University Hospital of Geneva and Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Lindsey A. Crowe
- Service of Radiology, University Hospital of Geneva and Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Pierre-Alexandre Poletti
- Service of Radiology, University Hospital of Geneva and Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Sophie de Seigneux
- Service of Nephrology, Department of Medicine, University Hospital of Geneva, Geneva, Switzerland
| | - Solange Moll
- Department of Pathology, Institute of Clinical Pathology, University Hospital of Geneva, Geneva, Switzerland
| | - Lena Berchtold
- Service of Nephrology, Department of Medicine, University Hospital of Geneva, Geneva, Switzerland
| | - Jean-Paul Vallée
- Service of Radiology, University Hospital of Geneva and Faculty of Medicine, University of Geneva, Geneva, Switzerland
- * E-mail:
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Ponchant K, Nguyen DA, Prsa M, Beghetti M, Sologashvili T, Vallée JP. Three-dimensional printing and virtual reconstruction in surgical planning of double-outlet right ventricle repair. JTCVS Tech 2022; 17:138-150. [PMID: 36820361 PMCID: PMC9938382 DOI: 10.1016/j.xjtc.2022.11.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 10/12/2022] [Accepted: 10/31/2022] [Indexed: 11/27/2022] Open
Abstract
Objectives For more than a decade, 3-dimensional (3D) printing has been identified as an innovative tool for the surgical planning of double-outlet right ventricle (DORV). Nevertheless, lack of evidence concerning its benefits encourages us to identify valuable criteria for future prospective trials. Methods We conducted a retrospective study involving 10 patients with DORV operated between 2015 and 2019 in our center. During a preoperative multidisciplinary heart team meeting, we harvested surgical decisions following a 3-increment step process: (1) multimodal imaging; (2) 3D virtual valvular reconstruction (3DVVR); and (3) 3D-printed heart model (3DPHM). The primary outcome was the proportion of predicted surgical strategy following each of the 3 steps, compared with the institutional retrospective surgical strategy. The secondary outcome was the change of surgical strategy through 3D modalities compared with multimodal imaging. The incremental benefit of the 3DVVR and 3DPHM over multimodal imaging was then assessed. Results The operative strategy was predicted in 5 cases after multimodal imaging, in 9 cases after 3DVVR, and the 10 cases after 3DPHM. Compared with multimodal imaging, 3DVVR modified the strategy for 4 cases. One case was correctly predicted only after 3DPHM inspection. Conclusions 3DVVR and 3DPHM improved multimodal imaging in the surgical planning of patients with DORV. 3DVVR allowed a better appreciation of the relationships between great vessels, valves, and ventricular septal defects. 3DPHM offers a realistic preoperative view at patient scale and enhances the evaluation of outflow tract obstruction. Our retrospective study demonstrates benefits of preoperative 3D modalities and supports future prospective trials to assess their impact on postoperative outcomes.
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Key Words
- 3D modality in surgical planning
- 3D printed heart model
- 3D printing
- 3D virtual valvular reconstruction
- 3D, 3-dimensional
- 3DPHM, 3D-printed heart model
- 3DVVR, 3D virtual valvular annulus reconstruction
- CTA, computed tomography angiogram
- DORV, double-outlet right ventricle
- LV, left ventricle
- PA, pulmonary artery
- PV, pulmonary valve
- TGA, transposition of the great arteries
- TTE, transthoracic echocardiography
- VSD, ventricular septal defect
- double-outlet right ventricle
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Affiliation(s)
- Kevin Ponchant
- Cardiovascular Radiology Unit, Geneva University Hospitals and University of Geneva, Geneva, Switzerland,Address for reprints: Kevin Ponchant, Cardiovascular Radiology Unit, Geneva University Hospitals and University of Geneva, Geneva, Switzerland.
| | - Duy-Anh Nguyen
- Pediatric Cardiology Unit, Children's University Hospital, Geneva, Switzerland
| | - Milan Prsa
- Division of Pediatric Cardiology, Woman-Mother-Child Department, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland,Centre Universitaire Romand de Cardiologie et Chirurgie Cardiaque Pédiatrique, Geneva University Hospitals/Lausanne University Hospital, Geneva/Lausanne, Switzerland
| | - Maurice Beghetti
- Pediatric Cardiology Unit, Children's University Hospital, Geneva, Switzerland,Centre Universitaire Romand de Cardiologie et Chirurgie Cardiaque Pédiatrique, Geneva University Hospitals/Lausanne University Hospital, Geneva/Lausanne, Switzerland
| | - Tornike Sologashvili
- Centre Universitaire Romand de Cardiologie et Chirurgie Cardiaque Pédiatrique, Geneva University Hospitals/Lausanne University Hospital, Geneva/Lausanne, Switzerland,Division of Cardiac Surgery, Geneva University Hospitals, Geneva, Switzerland
| | - Jean-Paul Vallée
- Cardiovascular Radiology Unit, Geneva University Hospitals and University of Geneva, Geneva, Switzerland
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Aslam I, Crowe LA, Kassai M, Qazi SA, Omer H, Vallée JP. Real-time, single breath-hold, multi-slice, 2D cine radial MR image reconstruction using sc-GROG k-t ESPIRiT. Biomed Phys Eng Express 2022; 8. [DOI: 10.1088/2057-1976/ac9f4e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 11/02/2022] [Indexed: 11/05/2022]
Abstract
Abstract
Multi-slice, multiple breath-hold ECG-gated 2D cine MRI is a standard technique for evaluating heart function and restricted to one or two images per breath-hold. Therefore, the standard cine MRI requires long scan time and can result in slice-misalignments because of various breath-hold location in the multiple acquisitions.This work proposes the sc-GROG based k-t ESPIRiT with Total Variation (TV) constraint (sc-GROG k-t ESPIRiT) to reconstruct unaliased cardiac real-time cine MR images from highly accelerated whole heart multi-slice, single breath-hold, real-time 2D cine radial data acquired using the balanced steady-state free precession (trueFISP) sequence in 8 patients. The proposed method quality is assessed via Artifact Power (AP), Root-Mean Square Error (RMSE), Structure Similarity Index (SSIM), Peak Signal-to-Noise Ratio (PSNR), blood-pool to myocardial Contrast-to-Noise-Ratio (CNR), Signal-to-Noise-Ratio (SNR) and spatial-temporal intensity plots through the blood-myocardium boundary. The proposed method quantitative results are compared with the conventional NUFFT based k-t ESPIRiT with Total Variation (TV) constraint (NUFFT k-t ESPIRiT) approach. Furthermore, clinical analysis and function quantification are assessed by Bland–Altman (BA) analyses. As supported by the visual assessment and evaluation parameters, the reconstruction results of the sc-GROG k-t ESPIRiT approach provide an average 21%, 12%, 1% and 47% improvement in AP, RMSE, SSIM and PSNR, respectively in comparison to the NUFFT k-t ESPIRiT approach. Furthermore, the proposed method gives on average 45% and 58% improved blood-pool to myocardial CNR and SNR than the NUFFT k-t ESPIRiT approach. Also, from the BA plot, the proposed method gives better left ventricular and right ventricular function measurements as compared to the NUFFT k-t ESPIRiT scheme.The sc-GROG k-t ESPIRiT (Proposed Method) improves the spatio-temporal quality of the whole heart multi-slice, single breath-hold, real-time 2D cine radial MR and semi-automated analysis using standard clinical software, as compared to the conventional NUFFT k-t ESPIRiT approach
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Deux JF, Crowe LA, Genecand L, Hachulla AL, Glessgen CG, Noble S, Beghetti M, Ning J, Giese D, Lador F, Vallée JP. Correlation between Pulmonary Artery Pressure and Vortex Duration Determined by 4D Flow MRI in Main Pulmonary Artery in Patients with Suspicion of Chronic Thromboembolic Pulmonary Hypertension (CTEPH). J Clin Med 2022; 11:jcm11175237. [PMID: 36079178 PMCID: PMC9457422 DOI: 10.3390/jcm11175237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/23/2022] [Accepted: 09/01/2022] [Indexed: 11/16/2022] Open
Abstract
Chronic thromboembolic pulmonary hypertension (CTEPH) is one of the causes of pulmonary hypertension (PH) and requires invasive measurement of the mean pulmonary artery pressure (mPAP) during right heart catheterisation (RHC) for the diagnosis. 4D flow MRI could provide non-invasive parameters to estimate the mPAP. Twenty-five patients with suspected CTEPH underwent cardiac MRI. Mean vortex duration (%), pulmonary distensibility, right ventricular volumes and function were measured using 4D flow MRI and cine sequences, and compared with the mPAP measured by RHC. The mPAP measured during RHC was 33 ± 16 mmHg (10−66 mmHg). PH (defined as mPAP > 20 mmHg) was present in 19 of 25 patients (76%). A vortical flow was observed in all but two patients (92%) on 4D flow images, and vortex duration showed good correlation with the mPAP (r = 0.805; p < 0.0001). Youden index analysis showed that a vortex duration of 8.6% of the cardiac cycle provided a 95% sensitivity and an 83% specificity to detect PH. Reliability for the measurement of vortex duration was excellent for both intra-observer ICC = 0.823 and inter-observer ICC = 0.788. Vortex duration could be a useful parameter to non-invasively estimate mPAP in patients with suspected CTEPH.
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Affiliation(s)
- Jean-François Deux
- Division of Radiology, Diagnostic Department Geneva University Hospitals, 1205 Geneva, Switzerland
- Faculty of Medicine, University of Geneva, 1205 Geneva, Switzerland
- Pulmonary Hypertension Program, Geneva University Hospitals, 1205 Geneva, Switzerland
- Correspondence: ; Tel.: +41-66-145-41-73
| | - Lindsey A. Crowe
- Division of Radiology, Diagnostic Department Geneva University Hospitals, 1205 Geneva, Switzerland
- Faculty of Medicine, University of Geneva, 1205 Geneva, Switzerland
| | - Léon Genecand
- Faculty of Medicine, University of Geneva, 1205 Geneva, Switzerland
- Pulmonary Hypertension Program, Geneva University Hospitals, 1205 Geneva, Switzerland
- Division of Pulmonary Medicine, Department of Medicine, Geneva University Hospitals, 1205 Geneva, Switzerland
| | - Anne-Lise Hachulla
- Division of Radiology, Diagnostic Department Geneva University Hospitals, 1205 Geneva, Switzerland
- Faculty of Medicine, University of Geneva, 1205 Geneva, Switzerland
- Pulmonary Hypertension Program, Geneva University Hospitals, 1205 Geneva, Switzerland
| | - Carl G. Glessgen
- Division of Radiology, Diagnostic Department Geneva University Hospitals, 1205 Geneva, Switzerland
| | - Stéphane Noble
- Faculty of Medicine, University of Geneva, 1205 Geneva, Switzerland
- Pulmonary Hypertension Program, Geneva University Hospitals, 1205 Geneva, Switzerland
- Division of Cardiology, Department of Medicine, Geneva University Hospitals, 1205 Geneva, Switzerland
| | - Maurice Beghetti
- Faculty of Medicine, University of Geneva, 1205 Geneva, Switzerland
- Pulmonary Hypertension Program, Geneva University Hospitals, 1205 Geneva, Switzerland
- Paediatric Cardiology Unit, Geneva University Hospitals, 1205 Geneva, Switzerland
- Centre Universitaire Romand de Cardiologie et Chirurgie Cardiaque Pédiatrique, University of Geneva and Lausanne, 1205 Geneva, Switzerland
| | - Jin Ning
- Siemens Medical Solutions USA Inc., Cleveland, OH 44125, USA
| | - Daniel Giese
- Magnetic Resonance, Siemens Healthcare GmbH, 91052 Erlangen, Germany
| | - Frédéric Lador
- Faculty of Medicine, University of Geneva, 1205 Geneva, Switzerland
- Pulmonary Hypertension Program, Geneva University Hospitals, 1205 Geneva, Switzerland
- Division of Pulmonary Medicine, Department of Medicine, Geneva University Hospitals, 1205 Geneva, Switzerland
| | - Jean-Paul Vallée
- Division of Radiology, Diagnostic Department Geneva University Hospitals, 1205 Geneva, Switzerland
- Faculty of Medicine, University of Geneva, 1205 Geneva, Switzerland
- Pulmonary Hypertension Program, Geneva University Hospitals, 1205 Geneva, Switzerland
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Berchtold L, Crowe L, Combescure C, Kassai M, Aslam I, Legouis D, Moll S, Martin PY, de Seigneux S, Vallée JP. MO457: Diffusion-MRI Predicts Decline of Renal Function in Chronic Kidney Diseases and Kidney Allograft Patients. Nephrol Dial Transplant 2022. [DOI: 10.1093/ndt/gfac070.071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
BACKGROUND AND AIMS
Kidney cortical interstitial fibrosis is highly predictive of renal prognosis and is currently assessed by the evaluation of a biopsy. Diffusion-weighted magnetic resonance imaging is a promising non-invasive tool to evaluate kidney fibrosis. We recently adapted a diffusion-weighted imaging sequence, allowing for the discrimination between the kidney cortex and medulla. The cortico-medullary difference in apparent diffusion coefficient (ΔADC) correlated to histological interstitial fibrosis. The aim of this study was to assess whether ΔADC as measured with diffusion-weighted magnetic resonance imaging is predictive of renal function decline and dialysis in chronic kidney diseases (CKD) and kidney allograft patients.
METHOD
We performed a prospective study including 197 patients. We measured ΔADC in 43 CKD patients [estimated glomerular filtration rate (eGFR) 55 mL/min/1.73m2] and 154 kidney allograft patients (eGFR 53 ml/min/1.73m2). Patients underwent a renal biopsy and diffusion-weighted magnetic resonance imaging, within 1 week of biopsy. Follow-up was 2.2 years in median. During follow-up, laboratory parameters were measured. Primary outcome was defined as rapid decline of renal function (eGFR decline > 30% or dialysis initiation) during follow-up.
RESULTS
Patients with low ΔADC (<0 x10-6mm2/s) had 5.4 times more risk of rapid decline of renal function or dialysis [95% confidence interval (CI): 2.29–12.58; P < 0.001]. After correction for renal function at baseline and proteinuria, low ADC still predict renal function loss with a hazard ratio (HR) of 4.62 (P < 0.001, 95% CI 1.56–13.67).
CONCLUSION
We demonstrate in this study that low ΔADC is a predictor of renal function decline and dialysis initiation in CKD and kidney allograft patients, independent of baseline renal function and proteinuria.
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Farhat N, Bouhabib M, Joye R, Vallée JP, Beghetti M. Contribution of imaging modalities to eosinophilic myocarditis diagnosis: a case report. Eur Heart J Case Rep 2022; 6:ytac058. [PMID: 35295721 PMCID: PMC8922693 DOI: 10.1093/ehjcr/ytac058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 04/28/2021] [Accepted: 01/21/2022] [Indexed: 11/29/2022]
Abstract
Background Eosinophilic myocarditis (EM) is a relatively rare form of myocarditis that could progress to restrictive cardiomyopathy and might be fatal if left untreated. Although myocardial biopsy is considered to be the gold standard for the diagnosis of myocarditis, its use in paediatrics remains controversial and not easily applicable in routine practice. Case summary A 10-year-old girl with no prior medical history presented to the emergency department for fever, odynophagia, and gastrointestinal symptoms despite 48 h of antibiotics (Cefaclor). Physical examination revealed diffuse petechiae and abdominal tenderness but was otherwise unremarkable. Her vital signs were normal. She was found to have hypereosinophilia and increased cardiac markers on laboratory testing. Echocardiography showed diffuse left ventricular (LV) myocardial infiltrates, moderate LV dilatation, and mild systolic dysfunction. Bone marrow biopsy confirmed B cell acute lymphoblastic leukaemia. The diagnosis of EM was made. High doses of steroids and chemotherapy were initiated. Cardiac magnetic resonance imaging (MRI) identified eosinophilic infiltrates and sub-endocardial enhancement strongly suggestive of EM. Left ventricular function was slightly decreased. Intra-ventricular micro-thrombi were suspected, and warfarin was started. The outcome was favourable. Leucocyte and eosinophil counts were normalized within a month. At 6 months, cardiac MRI demonstrated a significant decrease in eosinophilic infiltration and micro-thrombi, normalization of LV function, and of sub-endocardial enhancement. Discussion This case demonstrates that non-invasive multi-modality imaging along with typical laboratory and clinical findings allow for appropriate diagnosis of EM while avoiding biopsy. It also highlights that an early diagnosis, timely treatment, and rigorous follow-up improve disease progression and outcome.
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Affiliation(s)
- Nesrine Farhat
- Pediatric Cardiology Unit, Pediatric Department, University Hospital Liège (CHU), Rue de Gaillarmont 600, 4030 Liège, Belgium
| | - Maya Bouhabib
- Pediatric Cardiology Unit and Centre Universitaire Romand de Cardiologie et Chirurgie Cardiaque Pédiatrique (CHUV and HUG), Pediatric Department, University of Geneva and Lausanne, Geneva, Switzerland
| | - Raphael Joye
- Pediatric Cardiology Unit and Centre Universitaire Romand de Cardiologie et Chirurgie Cardiaque Pédiatrique (CHUV and HUG), Pediatric Department, University of Geneva and Lausanne, Geneva, Switzerland
| | - Jean-Paul Vallée
- Cardiovascular Radiology Unit, Radiology Department, University of Geneva, Geneva, Switzerland
| | - Maurice Beghetti
- Pediatric Cardiology Unit and Centre Universitaire Romand de Cardiologie et Chirurgie Cardiaque Pédiatrique (CHUV and HUG), Pediatric Department, University of Geneva and Lausanne, Geneva, Switzerland
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Berchtold L, Crowe LA, Combescure C, Kassaï M, Aslam I, Legouis D, Moll S, Martin PY, de Seigneux S, Vallée JP. Diffusion-Magnetic Resonance Imaging predicts decline of kidney function in chronic kidney disease and in patients with a kidney allograft. Kidney Int 2022; 101:804-813. [PMID: 35031327 DOI: 10.1016/j.kint.2021.12.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 11/22/2021] [Accepted: 12/09/2021] [Indexed: 12/21/2022]
Abstract
Kidney cortical interstitial fibrosis is highly predictive of kidney prognosis and is currently assessed by evaluation of a biopsy. Diffusion-weighted magnetic resonance imaging is a promising non-invasive tool to evaluate kidney fibrosis. We recently adapted diffusion-weighted imaging sequence for discrimination between the kidney cortex and medulla and found that the cortico-medullary difference in apparent diffusion coefficient (ΔADC) correlated with histological interstitial fibrosis. Here, we assessed whether ΔADC as measured with diffusion-weighted magnetic resonance imaging is predictive of kidney function decline and dialysis initiation in chronic kidney disease (CKD) and patients with a kidney allograft in a prospective study encompassing 197 patients. We measured ΔADC in 43 patients with CKD (estimated GFR (eGFR) 55ml/min/1.73m2) and 154 patients with a kidney allograft (eGFR 53ml/min/1.73m2). Patients underwent a kidney biopsy and diffusion-weighted magnetic resonance imaging within one week of biopsy; median follow-up of 2.2 years with measured laboratory parameters. The primary outcome was a rapid decline of kidney function (eGFR decline over 30% or dialysis initiation) during follow up. Significantly, patients with a negative ΔADC had 5.4 times more risk of rapid decline of kidney function or dialysis (95% confidence interval: 2.29-12.58). After correction for kidney function at baseline and proteinuria, low ADC still predicted significant kidney function loss with a hazard ratio of 4.62 (95% confidence interval 1.56-13.67) independent of baseline age, sex, eGFR and proteinuria. Thus, low ΔADC can be a predictor of kidney function decline and dialysis initiation in patients with native kidney disease or kidney allograft, independent of baseline kidney function and proteinuria.
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Affiliation(s)
- Lena Berchtold
- Service and Laboratory of Nephrology, Department of Internal Medicine Specialties and of Physiology and Metabolism, University and University Hospital of Geneva, Geneva, Switzerland.
| | - Lindsey A Crowe
- Service of Radiology, Department of Radiology and Medical Informatics, University and University Hospital of Geneva, Geneva, Switzerland
| | - Christophe Combescure
- Division of Clinical-Epidemiology, Department of Health and Community Medicine, University of Geneva and University Hospitals of Geneva, Geneva, Switzerland
| | - Miklos Kassaï
- Service of Radiology, Department of Radiology and Medical Informatics, University and University Hospital of Geneva, Geneva, Switzerland
| | - Ibtisam Aslam
- Service of Radiology, Department of Radiology and Medical Informatics, University and University Hospital of Geneva, Geneva, Switzerland
| | - David Legouis
- Intensive Care Unit, Department of Anaesthesiology, Pharmacology and Intensive Care, University of Geneva, Geneva, Switzerland
| | - Solange Moll
- Institute of Clinical Pathology, Department of Clinical Pathology, University Hospital of Geneva, Geneva, Switzerland
| | - Pierre-Yves Martin
- Service and Laboratory of Nephrology, Department of Internal Medicine Specialties and of Physiology and Metabolism, University and University Hospital of Geneva, Geneva, Switzerland
| | - Sophie de Seigneux
- Service and Laboratory of Nephrology, Department of Internal Medicine Specialties and of Physiology and Metabolism, University and University Hospital of Geneva, Geneva, Switzerland
| | - Jean-Paul Vallée
- Service of Radiology, Department of Radiology and Medical Informatics, University and University Hospital of Geneva, Geneva, Switzerland
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Frei M, Reymond P, Wacker J, van Steenberghe M, Beghetti M, Sologashvili T, Vallée JP. Three-dimensional printed moulds to obtain silicone hearts with congenital defects for paediatric heart-surgeon training. Eur J Cardiothorac Surg 2022; 65:ezae079. [PMID: 38445719 PMCID: PMC10942813 DOI: 10.1093/ejcts/ezae079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/12/2024] [Accepted: 03/04/2024] [Indexed: 03/07/2024] Open
Abstract
OBJECTIVES Many types of congenital heart disease are amenable to surgical repair or palliation. The procedures are often challenging and require specific surgical training, with limited real-life exposure and often costly simulation options. Our objective was to create realistic and affordable 3D simulation models of the heart and vessels to improve training. METHODS We created moulded vessel models using several materials, to identify the material that best replicated human vascular tissue. This material was then used to make more vessels to train residents in cannulation procedures. Magnetic resonance imaging views of a 23-month-old patient with double-outlet right ventricle were segmented using free open-source software. Re-usable moulds produced by 3D printing served to create a silicone model of the heart, with the same material as the vessels, which was used by a heart surgeon to simulate a Rastelli procedure. RESULTS The best material was a soft elastic silicone (Shore A hardness 8). Training on the vessel models decreased the residents' procedural time and improved their grades on a performance rating scale. The surgeon evaluated the moulded heart model as realistic and was able to perform the Rastelli procedure on it. Even if the valves were poorly represented, it was found to be useful for preintervention training. CONCLUSIONS By using free segmentation software, a relatively low-cost silicone and a technique based on re-usable moulds, the cost of obtaining heart models suitable for training in congenital heart defect surgery can be substantially decreased.
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Affiliation(s)
- Mélanie Frei
- Radiology Clinics, Diagnostic Department, Geneva University Hospital and University of Geneva, Geneva, Switzerland
- Department of Cardiac Surgery, Geneva University Hospital and University of Geneva, Geneva, Switzerland
| | - Philippe Reymond
- Charles Hahn Hemodynamic Propulsion Laboratory, Medical Faculty, University of Geneva, Geneva, Switzerland
| | - Julie Wacker
- Department of Women, Children and Adolescents, Paediatric Specialties Service, Geneva University Hospital and University of Geneva, Geneva, Switzerland
| | - Mathieu van Steenberghe
- Charles Hahn Hemodynamic Propulsion Laboratory, Medical Faculty, University of Geneva, Geneva, Switzerland
| | - Maurice Beghetti
- Department of Women, Children and Adolescents, Paediatric Specialties Service, Geneva University Hospital and University of Geneva, Geneva, Switzerland
| | - Tornike Sologashvili
- Department of Cardiac Surgery, Geneva University Hospital and University of Geneva, Geneva, Switzerland
| | - Jean-Paul Vallée
- Radiology Clinics, Diagnostic Department, Geneva University Hospital and University of Geneva, Geneva, Switzerland
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Kudo T, Lahey R, Hirschfeld CB, Williams MC, Lu B, Alasnag M, Bhatia M, Henry Bom HS, Dautov T, Fazel R, Karthikeyan G, Keng FY, Rubinshtein R, Better N, Cerci RJ, Dorbala S, Raggi P, Shaw LJ, Villines TC, Vitola JV, Choi AD, Malkovskiy E, Goebel B, Cohen YA, Randazzo M, Pascual TN, Pynda Y, Dondi M, Paez D, Einstein AJ, Einstein AJ, Paez D, Dondi M, Better N, Cerci R, Dorbala S, Pascual TN, Raggi P, Shaw LJ, Villines TC, Vitola JV, Williams MC, Pynda Y, Hinterleitner G, Lu Y, Morozova O, Xu Z, Hirschfeld CB, Cohen Y, Goebel B, Malkovskiy E, Randazzo M, Choi A, Lopez-Mattei J, Parwani P, Nasery MN, Goda A, Shirka E, Benlabgaa R, Bouyoucef S, Medjahedi A, Nailli Q, Agolti M, Aguero RN, Alak MDC, Alberguina LG, Arroñada G, Astesiano A, Astesiano A, Norton CB, Benteo P, Blanco J, Bonelli JM, Bustos JJ, Cabrejas R, Cachero J, Campisi R, Canderoli A, Carames S, Carrascosa P, Castro R, Cendoya O, Cognigni LM, Collaud C, Collaud C, Cortes C, Courtis J, Cragnolino D, Daicz M, De La Vega A, De Maria ST, Del Riego H, Dettori F, Deviggiano A, Dragonetti L, Embon M, Enriquez RE, Ensinas J, Faccio F, Facello A, Topping W, Tweed K, Weir-Mccall J, Abbara S, Abbasi T, Abbott B, Abohashem S, Abramson S, Al-Abboud T, Al-Mallah M, Garofalo D, Almousalli O, Ananthasubramaniam K, Kumar MA, Askew J, Attanasio L, Balmer-Swain M, Bayer RR, Bernheim A, Bhatti S, Bieging E, Geronazzo R, Blankstein R, Bloom S, Blue S, Bluemke D, Borges A, Branch K, Bravo P, Brothers J, Budoff M, Bullock-Palmer R, Gonza N, Burandt A, Burke FW, Bush K, Candela C, Capasso E, Cavalcante J, Chang D, Chatterjee S, Chatzizisis Y, Cheezum M, Gutierrez L, Chen T, Chen J, Chen M, Choi A, Clarcq J, Cordero A, Crim M, Danciu S, Decter B, Dhruva N, Guzzo MA, Doherty N, Doukky R, Dunbar A, Duvall W, Edwards R, Esquitin K, Farah H, Fentanes E, Ferencik M, Fisher D, Guzzo MA, Fitzpatrick D, Foster C, Fuisz T, Gannon M, Gastner L, Gerson M, Ghoshhajra B, Goldberg A, Goldner B, Gonzalez J, Hasbani V, Gore R, Gracia-López S, Hage F, Haider A, Haider S, Hamirani Y, Hassen K, Hatfield M, Hawkins C, Hawthorne K, Huerin M, Heath N, Hendel R, Hernandez P, Hill G, Horgan S, Huffman J, Hurwitz L, Iskandrian A, Janardhanan R, Jellis C, Jäger V, Jerome S, Kalra D, Kaviratne S, Kay F, Kelly F, Khalique O, Kinkhabwala M, Iii GK, Kircher J, Kirkbride R, Lewkowicz JM, Kontos M, Kottam A, Krepp J, Layer J, Lee SH, Leppo J, Lesser J, Leung S, Lewin H, Litmanovich D, López De Munaín MNA, Liu Y, Lopez-Mattei J, Magurany K, Markowitz J, Marn A, Matis SE, Mckenna M, Mcrae T, Mendoza F, Merhige M, Lotti JM, Min D, Moffitt C, Moncher K, Moore W, Morayati S, Morris M, Mossa-Basha M, Mrsic Z, Murthy V, Nagpal P, Marquez A, Napier K, Nelson K, Nijjar P, Osman M, Parwani P, Passen E, Patel A, Patil P, Paul R, Phillips L, Masoli O, Polsani V, Poludasu R, Pomerantz B, Porter T, Prentice R, Pursnani A, Rabbat M, Ramamurti S, Rich F, Luna HR, Masoli OH, Robinson A, Robles K, Rodríguez C, Rorie M, Rumberger J, Russell R, Sabra P, Sadler D, Schemmer M, Schoepf UJ, Mastrovito E, Shah S, Shah N, Shanbhag S, Sharma G, Shayani S, Shirani J, Shivaram P, Sigman S, Simon M, Slim A, Mayoraz M, Smith D, Smith A, Soman P, Sood A, Srichai-Parsia MB, Streeter J, T A, Tawakol A, Thomas D, Thompson R, Melado GE, Torbet T, Trinidad D, Ullery S, Unzek S, Uretsky S, Vallurupalli S, Verma V, Waller A, Wang E, Ward P, Mele A, Weissman G, Wesbey G, White K, Winchester D, Wolinsky D, Yost S, Zgaljardic M, Alonso O, Beretta M, Ferrando R, Merani MF, Kapitan M, Mut F, Djuraev O, Rozikhodjaeva G, Le Ngoc H, Mai SH, Nguyen XC, Meretta AH, Molteni S, Montecinos M, Noguera E, Novoa C, Sueldo CP, Ascani SP, Pollono P, Pujol MP, Radzinschi A, Raimondi G, Redruello M, Rodríguez M, Rodríguez M, Romero RL, Acuña AR, Rovaletti F, San Miguel L, Solari L, Strada B, Traverso S, Traverzo SS, Espeche MDHV, Weihmuller JS, Wolcan J, Zeffiro S, Sakanyan M, Beuzeville S, Boktor R, Butler P, Calcott J, Carr L, Chan V, Chao C, Chong W, Dobson M, Downie D, Dwivedi G, Elison B, Engela J, Francis R, Gaikwad A, Basavaraj AG, Goodwin B, Greenough R, Hamilton-Craig C, Hsieh V, Joshi S, Lederer K, Lee K, Lee J, Magnussen J, Mai N, Mander G, Murton F, Nandurkar D, Neill J, O'Rourke E, O'Sullivan P, Pandos G, Pathmaraj K, Pitman A, Poulter R, Premaratne M, Prior D, Ridley L, Rutherford N, Salehi H, Saunders C, Scarlett L, Seneviratne S, Shetty D, Shrestha G, Shulman J, Solanki V, Stanton T, Stuart M, Stubbs M, Swainson I, Taubman K, Taylor A, Thomas P, Unger S, Upton A, Vamadevan S, Van Gaal W, Verjans J, Voutnis D, Wayne V, Wilson P, Wong D, Wong K, Younger J, Feuchtner G, Mirzaei S, Weiss K, Maroz-Vadalazhskaya N, Gheysens O, Homans F, Moreno-Reyes R, Pasquet A, Roelants V, Van De Heyning CM, Ríos RA, Soldat-Stankovic V, Stankovic S, Albernaz Siqueira MH, Almeida A, Alves Togni PH, Andrade JH, Andrade L, Anselmi C, Araújo R, Azevedo G, Bezerra S, Biancardi R, Grossman GB, Brandão S, Pianta DB, Carreira L, Castro B, Chang T, Cunali F, Cury R, Dantas R, de Amorim Fernandes F, De Lorenzo A, De Macedo Filho R, Erthal F, Fernandes F, Fernandes J, Fernandes F, De Souza TF, Alves WF, Ghini B, Goncalves L, Gottlieb I, Hadlich M, Kameoka V, Lima R, Lima A, Lopes RW, Machado e Silva R, Magalhães T, Silva FM, Mastrocola LE, Medeiros F, Meneghetti JC, Naue V, Naves D, Nolasco R, Nomura C, Oliveira JB, Paixao E, De Carvalho FP, Pinto I, Possetti P, Quinta M, Nogueira Ramos RR, Rocha R, Rodrigues A, Rodrigues C, Romantini L, Sanches A, Santana S, Sara da Silva L, Schvartzman P, Matushita CS, Senra T, Shiozaki A, Menezes de Siqueira ME, Siqueira C, Smanio P, Soares CE, Junior JS, Bittencourt MS, Spiro B, Mesquita CT, Torreao J, Torres R, Uellendahl M, Monte GU, Veríssimo O, Cabeda EV, Pedras FV, Waltrick R, Zapparoli M, Naseer H, Garcheva-Tsacheva M, Kostadinova I, Theng Y, Abikhzer G, Barette R, Chow B, Dabreo D, Friedrich M, Garg R, Hafez MN, Johnson C, Kiess M, Leipsic J, Leung E, Miller R, Oikonomou A, Probst S, Roifman I, Small G, Tandon V, Trivedi A, White J, Zukotynski K, Canessa J, Muñoz GC, Concha C, Hidalgo P, Lovera C, Massardo T, Vargas LS, Abad P, Arturo H, Ayala S, Benitez L, Cadena A, Caicedo C, Moncayo AC, Moncayo AC, Gomez S, Gutierrez Villamil CT, Jaimes C, Londoño J, Londoño Blair JL, Pabon L, Pineda M, Rojas JC, Ruiz D, Escobar MV, Vasquez A, Vergel D, Zuluaga A, Gamboa IB, Castro G, González U, Baric A, Batinic T, Franceschi M, Paar MH, Jukic M, Medakovic P, Persic V, Prpic M, Punda A, Batista JF, Gómez Lauchy JM, Gutierrez YM, Gutierrez YM, Menéndez R, Peix A, Rochela L, Panagidis C, Petrou I, Engelmann V, Kaminek M, Kincl V, Lang O, Simanek M, Abdulla J, Bøttcher M, Christensen M, Gormsen LC, Hasbak P, Hess S, Holdgaard P, Johansen A, Kyhl K, Norgaard BL, Øvrehus KA, Rønnow Sand NP, Steffensen R, Thomassen A, Zerahn B, Perez A, Escorza Velez GA, Velez MS, Abdel Aziz IS, Abougabal M, Ahmed T, Allam A, Asfour A, Hassan M, Hassan A, Ibrahim A, Kaffas S, Kandeel A, Ali MM, Mansy A, Maurice H, Nabil S, Shaaban M, Flores AC, Poksi A, Knuuti J, Kokkonen V, Larikka M, Uusitalo V, Bailly M, Burg S, Deux JF, Habouzit V, Hyafil F, Lairez O, Proffit F, Regaieg H, Sarda-Mantel L, Tacher V, Schneider RP, Ayetey H, Angelidis G, Archontaki A, Chatziioannou S, Datseris I, Fragkaki C, Georgoulias P, Koukouraki S, Koutelou M, Kyrozi E, Repasos E, Stavrou P, Valsamaki P, Gonzalez C, Gutierrez G, Maldonado A, Buga K, Garai I, Maurovich-Horvat P, Schmidt E, Szilveszter B, Várady E, Banthia N, Bhagat JK, Bhargava R, Bhat V, Bhatia M, Choudhury P, Chowdekar VS, Irodi A, Jain S, Joseph E, Kumar S, Girijanandan Mahapatra PD, Mitra D, Mittal BR, Ozair A, Patel C, Patel T, Patel R, Patel S, Saxena S, Sengupta S, Singh S, Singh B, Sood A, Verma A, Affandi E, Alam PS, Edison E, Gunawan G, Hapkido H, Hidayat B, Huda A, Mukti AP, Prawiro D, Soeriadi EA, Syawaluddin H, Albadr A, Assadi M, Emami F, Houshmand G, Maleki M, Rostami MT, Zakavi SR, Zaid EA, Agranovich S, Arnson Y, Bar-Shalom R, Frenkel A, Knafo G, Lugassi R, Maor Moalem IS, Mor M, Muskal N, Ranser S, Shalev A, Albano D, Alongi P, Arnone G, Bagatin E, Baldari S, Bauckneht M, Bertelli P, Bianco F, Bonfiglioli R, Boni R, Bruno A, Bruno I, Busnardo E, Califaretti E, Camoni L, Carnevale A, Casoni R, Cavallo AU, Cavenaghi G, Chierichetti F, Chiocchi M, Cittanti C, Colletta M, Conti U, Cossu A, Cuocolo A, Cuzzocrea M, De Rimini ML, De Vincentis G, Del Giudice E, Del Torto A, Della Tommasina V, Durmo R, Erba PA, Evangelista L, Faletti R, Faragasso E, Farsad M, Ferro P, Florimonte L, Frantellizzi V, Fringuelli FM, Gatti M, Gaudiano A, Gimelli A, Giubbini R, Giuffrida F, Ialuna S, Laudicella R, Leccisotti L, Leva L, Liga R, Liguori C, Longo G, Maffione M, Mancini ME, Marcassa C, Milan E, Nardi B, Pacella S, Pepe G, Pontone G, Pulizzi S, Quartuccio N, Rampin L, Ricci F, Rossini P, Rubini G, Russo V, Sacchetti GM, Sambuceti G, Scarano M, Sciagrà R, Sperandio M, Stefanelli A, Ventroni G, Zoboli S, Baugh D, Chambers D, Madu E, Nunura F, Asano H, Chimura CM, Fujimoto S, Fujisue K, Fukunaga T, Fukushima Y, Fukuyama K, Hashimoto J, Ichikawa Y, Iguchi N, Imai M, Inaki A, Ishimura H, Isobe S, Kadokami T, Kato T, Kudo T, Kumita S, Maruno H, Mataki H, Miyagawa M, Morimoto R, Moroi M, Nagamachi S, Nakajima K, Nakata T, Nakazato R, Nanasato M, Naya M, Norikane T, Ohta Y, Okayama S, Okizaki A, Otomi Y, Otsuka H, Saito M, Sakata SY, Sarai M, Sato D, Shiraishi S, Suwa Y, Takanami K, Takehana K, Taki J, Tamaki N, Taniguchi Y, Teragawa H, Tomizawa N, Tsujita K, Umeji K, Wakabayashi Y, Yamada S, Yamazaki S, Yoneyama T, Rawashdeh M, Batyrkhanov D, Dautov T, Makhdomi K, Ombati K, Alkandari F, Garashi M, Coie TL, Rajvong S, Kalinin A, Kalnina M, Haidar M, Komiagiene R, Kviecinskiene G, Mataciunas M, Vajauskas D, Picard C, Karim NKA, Reichmuth L, Samuel A, Allarakha MA, Naojee AS, Alexanderson-Rosas E, Barragan E, González-Montecinos AB, Cabada M, Rodriguez DC, Carvajal-Juarez I, Cortés V, Cortés F, De La Peña E, Gama-Moreno M, González L, Ramírez NG, Jiménez-Santos M, Matos L, Monroy E, Morelos M, Ornelas M, Ortga Ramirez JA, Preciado-Anaya A, Preciado-Gutiérrez ÓU, Barragan AP, Rosales Uvera SG, Sandoval S, Tomas MS, Sierra-Galan LM, Sierra-Galan LM, Siu S, Vallejo E, Valles M, Faraggi M, Sereegotov E, Ilic S, Ben-Rais N, Alaoui NI, Taleb S, Pa Myo KP, Thu PS, Ghimire RK, Rajbanshi B, Barneveld P, Glaudemans A, Habets J, Koopmans KP, Manders J, Pool S, Scholte A, Scholtens A, Slart R, Thimister P, Van Asperen EJ, Veltman N, Verschure D, Wagenaar N, Edmond J, Ellis C, Johnson K, Keenan R, Kueh SH(A, Occleshaw C, Sasse A, To A, Van Pelt N, Young C, Cuadra T, Roque Vanegas HB, Soli IA, Issoufou DM, Ayodele T, Madu C, Onimode Y, Efros-Monsen E, Forsdahl SH, Hildre Dimmen JM, Jørgensen A, Krohn I, Løvhaugen P, Bråten AT, Al Dhuhli H, Al Kindi F, Al-Bulushi N, Jawa Z, Tag N, Afzal MS, Fatima S, Younis MN, Riaz M, Saadullah M, Herrera Y, Lenturut-Katal D, Vázquez MC, Ortellado J, Akhter A, Cao D, Cheung S, Dai X, Gong L, Han D, Hou Y, Li C, Li T, Li D, Li S, Liu J, Liu H, Lu B, Ng MY, Sun K, Tang G, Wang J, Wang X, Wang ZQ, Wang Y, Wang Y, Wu J, Wu Z, Xia L, Xiao J, Xu L, Yang Y, Yin W, Yu J, Yuan L, Zhang T, Zhang L, Zhang YG, Zhang X, Zhu L, Alfaro A, Abrihan P, Barroso A, Cruz E, Gomez MR, Magboo VP, Medina JM, Obaldo J, Pastrana D, Pawhay CM, Quinon A, Tang JM, Tecson B, Uson KJ, Uy M, Kostkiewicz M, Kunikowska J, Bettencourt N, Cantinho G, Ferreira A, Syed G, Arnous S, Atyani S, Byrne A, Gleeson T, Kerins D, Meehan C, Murphy D, Murphy M, Murray J, O'Brien J, Bang JI, Bom H, Cho SG, Hong CM, Jang SJ, Jeong YH, Kang WJ, Kim JY, Lee J, Namgung CK, So Y, Won KS, Majstorov V, Vavlukis M, Salobir BG, Štalc M, Benedek T, Benedek I, Mititelu R, Stan CA, Ansheles A, Dariy O, Drozdova O, Gagarina N, Gulyaev VM, Itskovich I, Karalkin A, Kokov A, Migunova E, Pospelov V, Ryzhkova D, Saifullina G, Sazonova S, Sergienko V, Shurupova I, Trifonova T, Ussov WY, Vakhromeeva M, Valiullina N, Zavadovsky K, Zhuravlev K, Alasnag M, Okarvi S, Saranovic DS, Keng F, Jason See JH, Sekar R, Yew MS, Vondrak A, Bejai S, Bennie G, Bester R, Engelbrecht G, Evbuomwan O, Gongxeka H, Vuuren MJ, Kaplan M, Khushica P, Lakhi H, Louw L, Malan N, Milos K, Modiselle M, More S, Naidoo M, Scholtz L, Vangu M, Aguadé-Bruix S, Blanco I, Cabrera A, Camarero A, Casáns-Tormo I, Cuellar-Calabria H, Flotats A, Fuentes Cañamero ME, García ME, Jimenez-Heffernan A, Leta R, Diaz JL, Lumbreras L, Marquez-Cabeza JJ, Martin F, Martinez de Alegria A, Medina F, Canal MP, Peiro V, Pubul-Nuñez V, Rayo Madrid JI, Rey CR, Perez RR, Ruiz J, Hernández GS, Sevilla A, Zeidán N, Nanayakkara D, Udugama C, Simonsson M, Alkadhi H, Buechel RR, Burger P, Ceriani L, De Boeck B, Gräni C, Juillet de Saint Lager Lucas A, Kamani CH, Kawel-Boehm N, Manka R, Prior JO, Rominger A, Vallée JP, Khiewvan B, Premprabha T, Thientunyakit T, Sellem A, Kir KM, Sayman H, Sebikali MJ, Muyinda Z, Kmetyuk Y, Korol P, Mykhalchenko O, Pliatsek V, Satyr M, Albalooshi B, Ahmed Hassan MI, Anderson J, Bedi P, Biggans T, Bularga A, Bull R, Burgul R, Carpenter JP, Coles D, Cusack D, Deshpande A, Dougan J, Fairbairn T, Farrugia A, Gopalan D, Gummow A, Ramkumar PG, Hamilton M, Harbinson M, Hartley T, Hudson B, Joshi N, Kay M, Kelion A, Khokhar A, Kitt J, Lee K, Low C, Mak SM, Marousa N, Martin J, Mcalindon E, Menezes L, Morgan-Hughes G, Moss A, Murray A, Nicol E, Patel D, Peebles C, Pugliese F, Luis Rodrigues JC, Rofe C, Sabharwal N, Schofield R, Semple T, Sharma N, Strouhal P, Subedi D. Impact of COVID-19 Pandemic on Cardiovascular Testing in Asia. JACC: Asia 2021; 1:187-199. [PMID: 36338167 PMCID: PMC9627847 DOI: 10.1016/j.jacasi.2021.06.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 05/12/2021] [Accepted: 06/29/2021] [Indexed: 11/27/2022]
Abstract
Background The coronavirus disease-2019 (COVID-19) pandemic significantly affected management of cardiovascular disease around the world. The effect of the pandemic on volume of cardiovascular diagnostic procedures is not known. Objectives This study sought to evaluate the effects of the early phase of the COVID-19 pandemic on cardiovascular diagnostic procedures and safety practices in Asia. Methods The International Atomic Energy Agency conducted a worldwide survey to assess changes in cardiovascular procedure volume and safety practices caused by COVID-19. Testing volumes were reported for March 2020 and April 2020 and were compared to those from March 2019. Data from 180 centers across 33 Asian countries were grouped into 4 subregions for comparison. Results Procedure volumes decreased by 47% from March 2019 to March 2020, showing recovery from March 2020 to April 2020 in Eastern Asia, particularly in China. The majority of centers cancelled outpatient activities and increased time per study. Practice changes included implementing physical distancing and restricting visitors. Although COVID testing was not commonly performed, it was conducted in one-third of facilities in Eastern Asia. The most severe reductions in procedure volumes were observed in lower-income countries, where volumes decreased 81% from March 2019 to April 2020. Conclusions The COVID-19 pandemic in Asia caused significant reductions in cardiovascular diagnostic procedures, particularly in low-income countries. Further studies on effects of COVID-19 on cardiovascular outcomes and changes in care delivery are warranted.
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Wacker J, Malaspinas I, Vallée JP, Beghetti M. Regression of coronary arteries aneurysms 6 months after multisystem inflammatory syndrome in children (MIS-C). Eur Heart J 2021; 42:2803. [PMID: 34136915 DOI: 10.1093/eurheartj/ehab340] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Julie Wacker
- Department of Woman, Child and Adolescent Medicine, Paediatric Cardiology Unit, University Hospitals of Geneva, Rue Willy Donzé 6, Geneva 1211, Switzerland
| | - Iliona Malaspinas
- Department of Woman, Child and Adolescent Medicine, Paediatric Cardiology Unit, University Hospitals of Geneva, Rue Willy Donzé 6, Geneva 1211, Switzerland
| | - Jean-Paul Vallée
- Division of Radiology, University Hospitals of Geneva, Rue Gabrielle-Perret-Gentil 4, 1205, Geneva, Switzerland
| | - Maurice Beghetti
- Department of Woman, Child and Adolescent Medicine, Paediatric Cardiology Unit, University Hospitals of Geneva, Rue Willy Donzé 6, Geneva 1211, Switzerland
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13
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Daviller C, Boutelier T, Giri S, Ratiney H, Jolly MP, Vallée JP, Croisille P, Viallon M. Direct Comparison of Bayesian and Fermi Deconvolution Approaches for Myocardial Blood Flow Quantification: In silico and Clinical Validations. Front Physiol 2021; 12:483714. [PMID: 33912066 PMCID: PMC8072361 DOI: 10.3389/fphys.2021.483714] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 03/08/2021] [Indexed: 11/13/2022] Open
Abstract
Cardiac magnetic resonance myocardial perfusion imaging can detect coronary artery disease and is an alternative to single-photon emission computed tomography or positron emission tomography. However, the complex, non-linear MR signal and the lack of robust quantification of myocardial blood flow have hindered its widespread clinical application thus far. Recently, a new Bayesian approach was developed for brain imaging and evaluation of perfusion indexes (Kudo et al., 2014). In addition to providing accurate perfusion measurements, this probabilistic approach appears more robust than previous approaches, particularly due to its insensitivity to bolus arrival delays. We assessed the performance of this approach against a well-known and commonly deployed model-independent method based on the Fermi function for cardiac magnetic resonance myocardial perfusion imaging. The methods were first evaluated for accuracy and precision using a digital phantom to test them against the ground truth; next, they were applied in a group of coronary artery disease patients. The Bayesian method can be considered an appropriate model-independent method with which to estimate myocardial blood flow and delays. The digital phantom comprised a set of synthetic time-concentration curve combinations generated with a 2-compartment exchange model and a realistic combination of perfusion indexes, arterial input dynamics, noise and delays collected from the clinical dataset. The myocardial blood flow values estimated with the two methods showed an excellent correlation coefficient (r2 > 0.9) under all noise and delay conditions. The Bayesian approach showed excellent robustness to bolus arrival delays, with a similar performance to Fermi modeling when delays were considered. Delays were better estimated with the Bayesian approach than with Fermi modeling. An in vivo analysis of coronary artery disease patients revealed that the Bayesian approach had an excellent ability to distinguish between abnormal and normal myocardium. The Bayesian approach was able to discriminate not only flows but also delays with increased sensitivity by offering a clearly enlarged range of distribution for the physiologic parameters.
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Affiliation(s)
- Clément Daviller
- Univ Lyon, INSA-Lyon, Université Claude Bernard Lyon 1, UJM-Saint Etienne, CNRS, Inserm, CREATIS, UMR 5220, U1294, Lyon, France
| | - Timothé Boutelier
- Department of Research and Innovation, Olea Medical, La Ciotat, France
| | - Shivraman Giri
- Siemens Medical Solutions USA, Inc., Boston, MA, United States
| | - Hélène Ratiney
- Univ Lyon, INSA-Lyon, Université Claude Bernard Lyon 1, UJM-Saint Etienne, CNRS, Inserm, CREATIS, UMR 5220, U1294, Lyon, France
| | | | - Jean-Paul Vallée
- Division of Radiology, Faculty of Medicine, Geneva University Hospitals, University of Geneva, Geneva, Switzerland
| | - Pierre Croisille
- Univ Lyon, INSA-Lyon, Université Claude Bernard Lyon 1, UJM-Saint Etienne, CNRS, Inserm, CREATIS, UMR 5220, U1294, Lyon, France.,Department of Radiology, CHU de Saint-Etienne, University of Lyon, UJM-Saint-Etienne, Saint-Étienne, France
| | - Magalie Viallon
- Univ Lyon, INSA-Lyon, Université Claude Bernard Lyon 1, UJM-Saint Etienne, CNRS, Inserm, CREATIS, UMR 5220, U1294, Lyon, France.,Department of Radiology, CHU de Saint-Etienne, University of Lyon, UJM-Saint-Etienne, Saint-Étienne, France
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14
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Zweerink A, Zubarev S, Bakelants E, Potyagaylo D, Stettler C, Chmelevsky M, Lozeron ED, Hachulla AL, Vallée JP, Burri H. His-Optimized Cardiac Resynchronization Therapy With Ventricular Fusion Pacing for Electrical Resynchronization in Heart Failure. JACC Clin Electrophysiol 2021; 7:881-892. [PMID: 33640346 DOI: 10.1016/j.jacep.2020.11.029] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 11/26/2020] [Indexed: 11/29/2022]
Abstract
OBJECTIVES This study sought to evaluate the effectiveness of His-optimized cardiac resynchronization therapy (HOT-CRT) for reducing left ventricular activation time (LVAT) compared to His bundle pacing (HBP) and biventricular (BiV) pacing (including multipoint pacing [MPP]), using electrocardiographic (ECG) imaging. BACKGROUND HBP may correct bundle branch block (BBB) and has shown encouraging results for providing CRT. However, HBP does not correct BBB in all patients and may be combined with univentricular or BiV fusion pacing to deliver HOT-CRT to maximize resynchronization. METHODS Nineteen patients with a standard indication for CRT, implanted with HBP without correction of BBB and BiV (n = 14) or right ventricular (n = 5) leads, were prospectively enrolled. Patients underwent ECG imaging while pacing in different configurations using different LV electrodes and at different HBP ventricular pacing (VP) delays. The primary endpoint was reduction in LVAT with HOT-CRT, and the secondary endpoints included various other dys-synchrony measurements including right ventricular activation time (RVAT). RESULTS Compared to HBP, HOT-CRT reduced LVAT by 21% (-17 ms [95% confidence interval [CI]: -25 to -9 ms]; p < 0.001) and outperformed BiV by 24% (-22 ms [95% CI: -33 to -10 ms]; p = 0.002) and MPP by 13% (-11 ms [95% CI: -21 to -1 ms]; p = 0.035). Relative to HBP, HOT-CRT also reduced RVAT by 7% (-5 ms [95% CI: -9 to -1 ms; p = 0.035) in patients with right BBB, whereas RVAT was increased by BiV. The other electrical dyssynchrony measurements also improved with HOT-CRT. CONCLUSIONS HOT-CRT acutely improves ventricular electrical synchrony beyond BiV and MPP. The impact of this finding needs to be evaluated further in studies with clinical follow-up. (Electrical Resynchronization and Acute Hemodynamic Effects of Direct His Bundle Pacing Compared to Biventricular Pacing; NCT03452462).
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Affiliation(s)
- Alwin Zweerink
- Department of Cardiology, University Hospital of Geneva, Geneva, Switzerland
| | - Stepan Zubarev
- Almazov National Medical Research Center, Saint-Petersburg, Russia
| | - Elise Bakelants
- Department of Cardiology, University Hospital of Geneva, Geneva, Switzerland
| | | | - Carine Stettler
- Department of Cardiology, University Hospital of Geneva, Geneva, Switzerland
| | | | - Elise Dupuis Lozeron
- Division of Clinical Epidemiology, University Hospital of Geneva, Geneva, Switzerland
| | - Anne-Lise Hachulla
- Department of Radiology, University Hospital of Geneva, Geneva, Switzerland
| | - Jean-Paul Vallée
- Department of Radiology, University Hospital of Geneva, Geneva, Switzerland
| | - Haran Burri
- Department of Cardiology, University Hospital of Geneva, Geneva, Switzerland.
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15
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Wacker J, Aggoun Y, Terraz S, Golay E, Maggio AB, Vallée JP, Hachulla AL, Lador F, Barazzone C, McLin V, Beghetti M. A 13-Year-Old Male With Diagnosed Idiopathic Pulmonary Hypertension. Chest 2020; 158:e295-e298. [DOI: 10.1016/j.chest.2020.07.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 07/12/2020] [Indexed: 10/22/2022] Open
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16
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Wacker J, Malaspinas I, Aggoun Y, Bordessoule A, Vallée JP, Beghetti M. Coronary artery dilatation in a child with hyperinflammatory syndrome with SARS-CoV-2-positive serology. Eur Heart J 2020; 41:3103. [PMID: 32620946 PMCID: PMC7337795 DOI: 10.1093/eurheartj/ehaa536] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 06/11/2020] [Indexed: 12/19/2022] Open
Affiliation(s)
- Julie Wacker
- Paediatric Cardiology Unit, University Hospitals of Geneva, Switzerland
| | - Iliona Malaspinas
- Paediatric Cardiology Unit, University Hospitals of Geneva, Switzerland
| | - Yacine Aggoun
- Paediatric Cardiology Unit, University Hospitals of Geneva, Switzerland
| | - Alice Bordessoule
- Paediatric intensive care unit, University Hospitals of Geneva, Switzerland
| | - Jean-Paul Vallée
- Division of Radiology, University Hospitals of Geneva, Switzerland
| | - Maurice Beghetti
- Paediatric Cardiology Unit, University Hospitals of Geneva, Switzerland
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17
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Berchtold L, Crowe LA, Friedli I, Legouis D, Moll S, de Perrot T, Martin PY, Vallée JP, de Seigneux S. Diffusion magnetic resonance imaging detects an increase in interstitial fibrosis earlier than the decline of renal function. Nephrol Dial Transplant 2020; 35:1274-1276. [PMID: 32160279 DOI: 10.1093/ndt/gfaa007] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 12/30/2019] [Indexed: 11/14/2022] Open
Affiliation(s)
- Lena Berchtold
- Service and Laboratory of Nephrology, Department of Internal Medicine Specialties and of Physiology and Metabolism, University and University Hospital of Geneva, Geneva, Switzerland
| | - Lindsey A Crowe
- Service of Radiology, Department of Radiology and Medical Informatics, University Hospital of Geneva and University of Geneva, Geneva, Switzerland
| | - Iris Friedli
- Service of Radiology, Department of Radiology and Medical Informatics, University Hospital of Geneva and University of Geneva, Geneva, Switzerland
| | - David Legouis
- Intensive Care Unit, Department of Anaesthesiology, Pharmacology and Intensive Care, University of Geneva, Geneva, Switzerland
| | - Solange Moll
- Institute of Clinical Pathology, Department of Clinical Pathology, University Hospital of Geneva, Geneva, Switzerland
| | - Thomas de Perrot
- Service of Radiology, Department of Radiology and Medical Informatics, University Hospital of Geneva and University of Geneva, Geneva, Switzerland
| | - Pierre-Yves Martin
- Service and Laboratory of Nephrology, Department of Internal Medicine Specialties and of Physiology and Metabolism, University and University Hospital of Geneva, Geneva, Switzerland
| | - Jean-Paul Vallée
- Service of Radiology, Department of Radiology and Medical Informatics, University Hospital of Geneva and University of Geneva, Geneva, Switzerland
| | - Sophie de Seigneux
- Service and Laboratory of Nephrology, Department of Internal Medicine Specialties and of Physiology and Metabolism, University and University Hospital of Geneva, Geneva, Switzerland
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18
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Santini F, Gui L, Lorton O, Guillemin PC, Manasseh G, Roth M, Bieri O, Vallée JP, Salomir R, Crowe LA. Ultrasound-driven cardiac MRI. Phys Med 2020; 70:161-168. [DOI: 10.1016/j.ejmp.2020.01.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 12/21/2019] [Accepted: 01/09/2020] [Indexed: 12/31/2022] Open
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19
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Akhmedov A, Montecucco F, Costantino S, Vdovenko D, Schaub Clerigué A, Gaul DS, Burger F, Roth A, Carbone F, Liberale L, Amrollahi-Sharifabadi M, Vellone VG, Eriksson U, Matter CM, Crowe LA, Vallée JP, Paneni F, Vanhoutte PM, Camici GG, Mach F, Lüscher TF. Cardiomyocyte-Specific JunD Overexpression Increases Infarct Size following Ischemia/Reperfusion Cardiac Injury by Downregulating Sirt3. Thromb Haemost 2019; 120:168-180. [PMID: 31858519 DOI: 10.1055/s-0039-3400299] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Ischemia/reperfusion (I/R) injury in acute myocardial infarction activates several deleterious molecular mechanisms. The transcription factor JunD regulates pathways involved in oxidative stress as well as in cellular proliferation, differentiation, and death. The present study investigated the potential role of JunD as a modulator of myocardial injury pathways in a mouse model of cardiac I/R injury. Infarct size, systemic and local inflammation, and production of reactive oxygen species, as well as cytosolic and mitochondrial apoptotic pathways were investigated in adult males after myocardial I/R. In wild-type (WT) mice, 30 minutes after ischemia and up to 24 hours following reperfusion, cardiac JunD messenger ribonucleic acid expression was reduced while JunB increased. Cardiac-specific JunD overexpressing mice (JunDTg/0 ) displayed larger infarcts compared with WT. However, postischemic inflammatory or oxidative responses did not differ. JunD overexpression reduced Sirt3 transcription by binding to its promoter, thus leading to mitochondrial dysfunction, myocardial cell death, and increased infarct size. On the other hand, JunD silencing reduced, while Sirt3 silencing increased infarct size. In human myocardial autopsy specimens, JunD-positive areas within the infarcted left ventricle staining corresponded to undetectable Sirt3 areas in consecutive sections of the same heart. Cardiac-specific JunD overexpression increases myocardial infarct size following I/R. These effects are mediated via Sirt3 transcriptional repression, mitochondrial swelling, and increased apoptosis, suggesting that JunD is a key regulator of myocardial I/R injury. The present data set the stage for further investigation of the potential role of Sirt3 activation as a novel target for the treatment of acute myocardial infarction.
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Affiliation(s)
- Alexander Akhmedov
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Zurich, Switzerland.,Department of Cardiology, University Heart Center, University Hospital Zurich, Zurich, Switzerland.,Zurich Center of Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Fabrizio Montecucco
- First Clinic of Internal Medicine, Department of Internal Medicine and Centre of Excellence for Biomedical Research (CEBR), University of Genoa, Genoa, Italy.,IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, Genoa, Italy
| | - Sarah Costantino
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Zurich, Switzerland.,Department of Cardiology, University Heart Center, University Hospital Zurich, Zurich, Switzerland.,Zurich Center of Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Daria Vdovenko
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Zurich, Switzerland.,Department of Cardiology, University Heart Center, University Hospital Zurich, Zurich, Switzerland.,Zurich Center of Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Ariane Schaub Clerigué
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Zurich, Switzerland.,Department of Cardiology, University Heart Center, University Hospital Zurich, Zurich, Switzerland.,Zurich Center of Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Daniel S Gaul
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Zurich, Switzerland.,Department of Cardiology, University Heart Center, University Hospital Zurich, Zurich, Switzerland.,Zurich Center of Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Fabienne Burger
- Division of Cardiology, Foundation for Medical Researches, University of Geneva, Geneva, Switzerland
| | - Aline Roth
- Division of Cardiology, Foundation for Medical Researches, University of Geneva, Geneva, Switzerland
| | - Federico Carbone
- First Clinic of Internal Medicine, Department of Internal Medicine and Centre of Excellence for Biomedical Research (CEBR), University of Genoa, Genoa, Italy
| | - Luca Liberale
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Zurich, Switzerland.,Department of Cardiology, University Heart Center, University Hospital Zurich, Zurich, Switzerland.,Zurich Center of Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Mohammad Amrollahi-Sharifabadi
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Zurich, Switzerland.,Department of Cardiology, University Heart Center, University Hospital Zurich, Zurich, Switzerland
| | - Valerio Gaetano Vellone
- Division of Pathology, Department of Integrated Surgical and Diagnostic Sciences, University of Genoa, Genoa, Italy.,Pathology Academic Unit, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Urs Eriksson
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Zurich, Switzerland.,Department of Cardiology, University Heart Center, University Hospital Zurich, Zurich, Switzerland.,GZO Regional Health Center, Wetzikon, Switzerland
| | - Christian M Matter
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Zurich, Switzerland.,Department of Cardiology, University Heart Center, University Hospital Zurich, Zurich, Switzerland.,Zurich Center of Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Lindsey A Crowe
- Division of Radiology, Faculty of Medicine, Geneva University Hospital, Geneva, Switzerland
| | - Jean-Paul Vallée
- Division of Radiology, Faculty of Medicine, Geneva University Hospital, Geneva, Switzerland
| | - Francesco Paneni
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Zurich, Switzerland.,Department of Cardiology, University Heart Center, University Hospital Zurich, Zurich, Switzerland.,Zurich Center of Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Paul M Vanhoutte
- Department of Pharmacology, Hong Kong University, Hong Kong, Peoples Republic of China
| | - Giovanni G Camici
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Zurich, Switzerland.,Department of Cardiology, University Heart Center, University Hospital Zurich, Zurich, Switzerland.,Zurich Center of Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - François Mach
- Division of Cardiology, Foundation for Medical Researches, University of Geneva, Geneva, Switzerland
| | - Thomas F Lüscher
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Zurich, Switzerland.,Department of Cardiology, University Heart Center, University Hospital Zurich, Zurich, Switzerland.,Royal Brompton and Harefield Hospitals, Imperial College London, London, United Kingdom
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20
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Hachulla AL, Rautou PE, Franchi-Abella S, Lagadec M, Mueller H, Noble S, Bouchardy J, Lambert V, Lador F, Beghetti M, Pariente D, Vilgrain V, Vallée JP, Ronot M. Impact of Liver Diseases on Heart and Lungs. JACC Cardiovasc Imaging 2019; 12:2071-2075. [DOI: 10.1016/j.jcmg.2019.03.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 02/26/2019] [Accepted: 03/27/2019] [Indexed: 10/26/2022]
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21
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Johner N, Maziarski P, Vallée JP, Meyer P. Epicardial fat mimicking left atrial appendage thrombus. Cardiol J 2019; 26:418-419. [PMID: 31452187 DOI: 10.5603/cj.2019.0080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 05/26/2019] [Indexed: 11/25/2022] Open
Affiliation(s)
- Nicolas Johner
- Cardiology Service, Geneva University Hospitals, Geneva, Switzerland
| | | | - Jean-Paul Vallée
- Radiology Service, Geneva University Hospitals, Geneva, Switzerland
| | - Philippe Meyer
- Cardiology Service, Geneva University Hospitals, Geneva, Switzerland.
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22
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Hachulla AL, Noble S, Ronot M, Guglielmi G, de Perrot T, Montet X, Vallée JP. Low Iodine Contrast Injection for CT Acquisition Prior to Transcatheter Aortic Valve Replacement: Aorta Assessment and Screening for Coronary Artery Disease. Acad Radiol 2019; 26:e150-e160. [PMID: 30076081 DOI: 10.1016/j.acra.2018.06.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Revised: 06/17/2018] [Accepted: 06/18/2018] [Indexed: 10/28/2022]
Abstract
RATIONALE AND OBJECTIVES To assess both the complete aorta and coronary artery disease (CAD) using low iodine contrast computed-tomography angiography before transcatheter aortic valve replacement. MATERIALS AND METHODS 84 patients underwent computed-tomography angiography before transcatheter aortic valve replacement: 42 with standard iodine injection protocol (P1:120 mL); 42 with a low dose iodine injection protocol (P2:60 mL). Mean attenuation and subjective image quality were rated at different levels of the aorta, iliac and coronary arteries. Sensitivity, specificity, negative and positive predictive values for depiction of CAD were calculated according to the coronary angiography. RESULTS Mean attenuation was significantly higher in P1 for the ascending aorta (p < 0.001). No significant difference was observed regarding image quality of the aortic valve (p = 0.876), the ascending aorta (p = 0.306), or the abdominal aorta (p = 1.0). Diagnostic image quality of coronary arteries was excellent for P1 and P2 (94.6% vs 96.5%, p = 0.08). Sensitivity, specificity, negative and positive predictive values, and accuracy for depiction of CAD were excellent for P1 and P2 (100% vs 100%; 79% vs 86%, 70% vs 87%, 100% vs 100% and 86% vs 93%) without significant differences (p = 0.93; p = 0.58; p = 0.90; p = 1.0; p = 0.74), respectively. CONCLUSION Despite a difference in aortic mean attenuation, a reduced iodine injection protocol showed similar image quality and detection of CAD in comparison with a standard injection protocol.
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23
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Berchtold L, Friedli I, Crowe LA, Martinez C, Moll S, Hadaya K, de Perrot T, Combescure C, Martin PY, Vallée JP, de Seigneux S. Validation of the corticomedullary difference in magnetic resonance imaging-derived apparent diffusion coefficient for kidney fibrosis detection: a cross-sectional study. Nephrol Dial Transplant 2019; 35:937-945. [DOI: 10.1093/ndt/gfy389] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 11/15/2018] [Indexed: 12/12/2022] Open
Abstract
Abstract
Background
Kidney cortical interstitial fibrosis (IF) is highly predictive of renal prognosis and is currently assessed by the evaluation of a biopsy. Diffusion magnetic resonance imaging (MRI) is a promising tool to evaluate kidney fibrosis via the apparent diffusion coefficient (ADC), but suffers from inter-individual variability. We recently applied a novel MRI protocol to allow calculation of the corticomedullary ADC difference (ΔADC). We here present the validation of ΔADC for fibrosis assessment in a cohort of 164 patients undergoing biopsy and compare it with estimated glomerular filtration rate (eGFR) and other plasmatic parameters for the detection of fibrosis.
Methods
This monocentric cross-sectional study included 164 patients undergoing renal biopsy at the Nephrology Department of the University Hospital of Geneva between October 2014 and May 2018. Patients underwent diffusion-weighted imaging, and T1 and T2 mappings, within 1 week after biopsy. MRI results were compared with gold standard histology for fibrosis assessment.
Results
Absolute cortical ADC or cortical T1 values correlated poorly to IF assessed by the biopsy, whereas ΔADC was highly correlated to IF (r=−0.52, P < 0.001) and eGFR (r = 0.37, P < 0.01), in both native and allograft patients. ΔT1 displayed a lower, but significant, correlation to IF and eGFR, whereas T2 did not correlate to IF nor to eGFR. ΔADC, ΔT1 and eGFR were independently associated with kidney fibrosis, and their combination allowed detection of extensive fibrosis with good specificity.
Conclusion
ΔADC is better correlated to IF than absolute cortical or medullary ADC values. ΔADC, ΔT1 and eGFR are independently associated to IF and allow the identification of patients with extensive IF.
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Affiliation(s)
- Lena Berchtold
- Service and Laboratory of Nephrology, Department for Statistics, Department of Internal Medicine Specialties and of Physiology and Metabolism, University Hospital and University of Geneva, Geneva, Switzerland
| | - Iris Friedli
- Service of Radiology, Department for Statistics, Department of Radiology and Medical Informatics, University Hospital and University of Geneva, Geneva, Switzerland
| | - Lindsey A Crowe
- Service of Radiology, Department for Statistics, Department of Radiology and Medical Informatics, University Hospital and University of Geneva, Geneva, Switzerland
| | - Chantal Martinez
- Service and Laboratory of Nephrology, Department for Statistics, Department of Internal Medicine Specialties and of Physiology and Metabolism, University Hospital and University of Geneva, Geneva, Switzerland
| | - Solange Moll
- Department of Clinical Pathology, Institute of Clinical Pathology, University Hospital of Geneva, Geneva, Switzerland
| | - Karine Hadaya
- Service and Laboratory of Nephrology, Department for Statistics, Department of Internal Medicine Specialties and of Physiology and Metabolism, University Hospital and University of Geneva, Geneva, Switzerland
| | - Thomas de Perrot
- Service of Radiology, Department for Statistics, Department of Radiology and Medical Informatics, University Hospital and University of Geneva, Geneva, Switzerland
| | - Christophe Combescure
- CRC & Division of Clinical-Epidemiology, Department of Health and Community Medicine, University of Geneva and University Hospitals of Geneva, Geneva, Switzerland
| | - Pierre-Yves Martin
- Service and Laboratory of Nephrology, Department for Statistics, Department of Internal Medicine Specialties and of Physiology and Metabolism, University Hospital and University of Geneva, Geneva, Switzerland
| | - Jean-Paul Vallée
- Service of Radiology, Department for Statistics, Department of Radiology and Medical Informatics, University Hospital and University of Geneva, Geneva, Switzerland
| | - Sophie de Seigneux
- Service and Laboratory of Nephrology, Department for Statistics, Department of Internal Medicine Specialties and of Physiology and Metabolism, University Hospital and University of Geneva, Geneva, Switzerland
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24
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Babič A, Vorobiev V, Trefalt G, Crowe LA, Helm L, Vallée JP, Allémann E. MRI micelles self-assembled from synthetic gadolinium-based nano building blocks. Chem Commun (Camb) 2019; 55:945-948. [DOI: 10.1039/c8cc08875f] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Synthetic self-assembled stealth Gd-micelles are a new blood pool contrast agent for magnetic resonance imaging.
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Affiliation(s)
- Andrej Babič
- Pharmaceutical Technology, School of Pharmaceutical Sciences, University of Geneva, University of Lausanne
- 1211 Geneva 4
- Switzerland
| | - Vassily Vorobiev
- Pharmaceutical Technology, School of Pharmaceutical Sciences, University of Geneva, University of Lausanne
- 1211 Geneva 4
- Switzerland
| | - Gregor Trefalt
- Department of Inorganic and Analytical Chemistry, University of Geneva
- 1205 Geneva 4
- Switzerland
| | - Lindsey A. Crowe
- Department of Radiology and Medical Informatics, Faculty of Medicine, University of Geneva
- 1211 Geneva 4
- Switzerland
| | - Lothar Helm
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne
- 1015 Lausanne
- Switzerland
| | - Jean-Paul Vallée
- Department of Radiology and Medical Informatics, Faculty of Medicine, University of Geneva
- 1211 Geneva 4
- Switzerland
| | - Eric Allémann
- Pharmaceutical Technology, School of Pharmaceutical Sciences, University of Geneva, University of Lausanne
- 1211 Geneva 4
- Switzerland
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Selby NM, Blankestijn PJ, Boor P, Combe C, Eckardt KU, Eikefjord E, Garcia-Fernandez N, Golay X, Gordon I, Grenier N, Hockings PD, Jensen JD, Joles JA, Kalra PA, Krämer BK, Mark PB, Mendichovszky IA, Nikolic O, Odudu A, Ong ACM, Ortiz A, Pruijm M, Remuzzi G, Rørvik J, de Seigneux S, Simms RJ, Slatinska J, Summers P, Taal MW, Thoeny HC, Vallée JP, Wolf M, Caroli A, Sourbron S. Magnetic resonance imaging biomarkers for chronic kidney disease: a position paper from the European Cooperation in Science and Technology Action PARENCHIMA. Nephrol Dial Transplant 2018; 33:ii4-ii14. [PMID: 30137584 PMCID: PMC6106645 DOI: 10.1093/ndt/gfy152] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Indexed: 12/13/2022] Open
Abstract
Functional renal magnetic resonance imaging (MRI) has seen a number of recent advances, and techniques are now available that can generate quantitative imaging biomarkers with the potential to improve the management of kidney disease. Such biomarkers are sensitive to changes in renal blood flow, tissue perfusion, oxygenation and microstructure (including inflammation and fibrosis), processes that are important in a range of renal diseases including chronic kidney disease. However, several challenges remain to move these techniques towards clinical adoption, from technical validation through biological and clinical validation, to demonstration of cost-effectiveness and regulatory qualification. To address these challenges, the European Cooperation in Science and Technology Action PARENCHIMA was initiated in early 2017. PARENCHIMA is a multidisciplinary pan-European network with an overarching aim of eliminating the main barriers to the broader evaluation, commercial exploitation and clinical use of renal MRI biomarkers. This position paper lays out PARENCHIMA's vision on key clinical questions that MRI must address to become more widely used in patients with kidney disease, first within research settings and ultimately in clinical practice. We then present a series of practical recommendations to accelerate the study and translation of these techniques.
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Affiliation(s)
- Nicholas M Selby
- Centre for Kidney Research and Innovation, University of Nottingham, UK
| | - Peter J Blankestijn
- Nephrology and Hypertension, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Peter Boor
- Institute of Pathology and Department of Nephrology, RWTH University, Aachen, Germany
| | - Christian Combe
- Service de Néphrologie Transplantation Dialyse Aphérèse, Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
| | - Kai-Uwe Eckardt
- Department of Nephrology and Medical Intensive Care, Charité—Universitätsmedizin Berlin, Berlin, Germany
| | - Eli Eikefjord
- Department of Health and Functioning, Western Norway University of Applied Sciences, Norway
| | | | - Xavier Golay
- Institute of Neurology, University College London, Queen Square, London, UK
| | - Isky Gordon
- Great Ormond Street Institute of Child Health, University College London, London, UK
| | - Nicolas Grenier
- Service d'Imagerie Diagnostique et Interventionnelle de l'Adulte, Centre Hospitalier Universitaire de Bordeaux Place Amelie Raba-Leon, Bordeaux, France
| | | | - Jens D Jensen
- Departments of Renal and Clinical Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Jaap A Joles
- Nephrology and Hypertension, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Philip A Kalra
- Department of Renal Medicine, Salford Royal Hospital and Division of Cardiovascular Sciences, University of Manchester, Manchester, UK
| | - Bernhard K Krämer
- Vth Department of Medicine, University Medical Center Mannheim, Medical Faculty Mannheim of the University Heidelberg, Mannheim, Germany
| | - Patrick B Mark
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK
| | - Iosif A Mendichovszky
- Department of Radiology, Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge Biomedical Campus, Cambridge, UK
| | - Olivera Nikolic
- Faculty of Medicine,University of Novi Sad, Center of Radiology, Clinical Centre of Vojvodina, Serbia
| | - Aghogho Odudu
- Division of Cardiovascular Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK
| | - Albert C M Ong
- Academic Nephrology Unit, Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield Medical School, Sheffield, UK
| | - Alberto Ortiz
- Nephrology and Hypertension, IIS-Fundacion Jimenez Diaz UAM, Madrid, Spain
| | - Menno Pruijm
- Service of Nephrology and Hypertension, Department of Medicine, University Hospital of Lausanne (CHUV), Lausanne, Switzerland
| | - Giuseppe Remuzzi
- IRCCS Istituto di Ricerche Farmacologiche Mario Negri, Bergamo, Italy
| | - Jarle Rørvik
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
- Department of Radiology, Haukeland University Hospital, Bergen, Norway
| | - Sophie de Seigneux
- Service of Nephrology, Department of Medicine Specialties, University Hospital of Geneva, Geneva, Switzerland
| | - Roslyn J Simms
- Academic Nephrology Unit, Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield Medical School, Sheffield, UK
| | - Janka Slatinska
- Department of Nephrology, Transplant Centre, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Paul Summers
- Department of Medical Imaging and Radiation Sciences, Radiology Division, European Institute of Oncology (IEO), Milan, Italy
- QMRI Tech iSrl, Piazza dei Martiri Pennesi 20, Pescara, Italy
| | - Maarten W Taal
- Centre for Kidney Research and Innovation, University of Nottingham, UK
| | - Harriet C Thoeny
- University of Bern, Inselspital, Bern, Switzerland
- HFR Fribourg, Hôpital Cantonal, Fribourg, Switzerland
| | - Jean-Paul Vallée
- Radiology Department, Geneva University Hospital and University of Geneva, Geneva, Switzerland
| | - Marcos Wolf
- Center for Medical Physics and Biomedical Engineering, MR-Centre of Excellence, Medical University of Vienna, Vienna, Austria
| | - Anna Caroli
- IRCCS Istituto di Ricerche Farmacologiche Mario Negri, Bergamo, Italy
| | - Steven Sourbron
- Leeds Imaging Biomarkers Group, Department of Biomedical Imaging Sciences, University of Leeds, Leeds, UK
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Caroli A, Schneider M, Friedli I, Ljimani A, De Seigneux S, Boor P, Gullapudi L, Kazmi I, Mendichovszky IA, Notohamiprodjo M, Selby NM, Thoeny HC, Grenier N, Vallée JP. Diffusion-weighted magnetic resonance imaging to assess diffuse renal pathology: a systematic review and statement paper. Nephrol Dial Transplant 2018; 33:ii29-ii40. [PMID: 30137580 PMCID: PMC6106641 DOI: 10.1093/ndt/gfy163] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 05/02/2018] [Indexed: 12/26/2022] Open
Abstract
Diffusion-weighted magnetic resonance imaging (DWI) is a non-invasive method sensitive to local water motion in the tissue. As a tool to probe the microstructure, including the presence and potentially the degree of renal fibrosis, DWI has the potential to become an effective imaging biomarker. The aim of this review is to discuss the current status of renal DWI in diffuse renal diseases. DWI biomarkers can be classified in the following three main categories: (i) the apparent diffusion coefficient-an overall measure of water diffusion and microcirculation in the tissue; (ii) true diffusion, pseudodiffusion and flowing fraction-providing separate information on diffusion and perfusion or tubular flow; and (iii) fractional anisotropy-measuring the microstructural orientation. An overview of human studies applying renal DWI in diffuse pathologies is given, demonstrating not only the feasibility and intra-study reproducibility of DWI but also highlighting the need for standardization of methods, additional validation and qualification. The current and future role of renal DWI in clinical practice is reviewed, emphasizing its potential as a surrogate and monitoring biomarker for interstitial fibrosis in chronic kidney disease, as well as a surrogate biomarker for the inflammation in acute kidney diseases that may impact patient selection for renal biopsy in acute graft rejection. As part of the international COST (European Cooperation in Science and Technology) action PARENCHIMA (Magnetic Resonance Imaging Biomarkers for Chronic Kidney Disease), aimed at eliminating the barriers to the clinical use of functional renal magnetic resonance imaging, this article provides practical recommendations for future design of clinical studies and the use of renal DWI in clinical practice.
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Affiliation(s)
- Anna Caroli
- Medical Imaging Unit, Bioengineering Department, IRCCS Istituto di Ricerche Farmacologiche Mario Negri, Bergamo, Italy
| | - Moritz Schneider
- Department of Radiology, Ludwig-Maximilians-University Hospital Munich, Munich, Germany
- Comprehensive Pneumology Center, German Center for Lung Research, Munich, Germany
| | - Iris Friedli
- Division of Radiology, Geneva University Hospitals, University of Geneva, Geneva, Switzerland
| | - Alexandra Ljimani
- Department of Diagnostic and Interventional Radiology, Medical Faculty, University Dusseldorf, Dusseldorf, Germany
| | - Sophie De Seigneux
- Service and Laboratory of Nephrology, Department of Internal Medicine Specialties and Department of Physiology and Metabolism, Geneva University Hospitals, University of Geneva, Geneva, Switzerland
| | - Peter Boor
- Institute of Pathology and Division of Nephrology, RWTH University of Aachen, Aachen, Germany
| | - Latha Gullapudi
- Centre for Kidney Research and Innovation, University of Nottingham, Nottingham, UK
| | - Isma Kazmi
- Centre for Kidney Research and Innovation, University of Nottingham, Nottingham, UK
| | - Iosif A Mendichovszky
- Department of Radiology, Cambridge University Hospitals NHS Foundation Trust, Addenbrooke’s Hospital, Cambridge, UK
| | | | - Nicholas M Selby
- Centre for Kidney Research and Innovation, University of Nottingham, Nottingham, UK
| | - Harriet C Thoeny
- Department of Diagnostic, Pediatric, and Interventional Radiology, Inselspital University Hospital, Bern, Switzerland
| | - Nicolas Grenier
- Service d'Imagerie Diagnostique et Interventionnelle de l'Adulte, Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
| | - Jean-Paul Vallée
- Division of Radiology, Geneva University Hospitals, University of Geneva, Geneva, Switzerland
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Milani B, Ledoux JB, Rotzinger DC, Kanemitsu M, Vallée JP, Burnier M, Pruijm M. Image acquisition for intravoxel incoherent motion imaging of kidneys should be triggered at the instant of maximum blood velocity: evidence obtained with simulations and in vivo experiments. Magn Reson Med 2018; 81:583-593. [DOI: 10.1002/mrm.27393] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 05/14/2018] [Accepted: 05/15/2018] [Indexed: 12/18/2022]
Affiliation(s)
- Bastien Milani
- Département de Medecine, Service de Néphrologie; Centre Hospitalier Universitaire Vaudois; Vaud Switzerland
- Département de Radiologie; Centre Hospitalier Universitaire Vaudois; Vaud Switzerland
- Center for Biomedical Imaging; Centre Hospitalier Universitaire Vaudois; Vaud Switzerland
| | - Jean-Baptiste Ledoux
- Département de Radiologie; Centre Hospitalier Universitaire Vaudois; Vaud Switzerland
- Center for Biomedical Imaging; Centre Hospitalier Universitaire Vaudois; Vaud Switzerland
| | - David C. Rotzinger
- Département de Radiologie; Centre Hospitalier Universitaire Vaudois; Vaud Switzerland
| | - Michiko Kanemitsu
- Département de Medecine, Service de Néphrologie; Centre Hospitalier Universitaire Vaudois; Vaud Switzerland
| | - Jean-Paul Vallée
- Département d'Imagerie et des Sciences de l'information Médicale; Hôpitaux Universitaires de Genève; Genève Switzerland
| | - Michel Burnier
- Département de Medecine, Service de Néphrologie; Centre Hospitalier Universitaire Vaudois; Vaud Switzerland
| | - Menno Pruijm
- Département de Medecine, Service de Néphrologie; Centre Hospitalier Universitaire Vaudois; Vaud Switzerland
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Hachulla AL, Noble S, Guglielmi G, Agulleiro D, Müller H, Vallée JP. 3D-printed heart model to guide LAA closure: useful in clinical practice? Eur Radiol 2018; 29:251-258. [PMID: 29948082 DOI: 10.1007/s00330-018-5569-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 04/19/2018] [Accepted: 05/28/2018] [Indexed: 12/01/2022]
Abstract
OBJECTIVES Correct device sizing for left atrial appendage (LAA) closure remains challenging due to complex LAA shapes. The aim of our study was to investigative the utility of personalized 3D-printed models (P3DPM) of the LAA to guide device size selection. METHODS Fifteen patients (75.4 ±8.5years) scheduled for LAA closure using an Amulet device underwent cardiac computed tomography (CT). The LAA was segmented by semiautomatic algorithms using Vitrea® software. A 1.5-mm LAA thick shell was exported in stereolithography format and printed using TangoPlus flexible material. Different Amulet device sizes on the P3DPM were tested. New P3DPM-CT with the device was acquired in order to appreciate the proximal disc sealing the LAA ostium and the compression of the distal lobe within the LAA. We predicted the device size with P3DPM and compared this with the device sizes predicted by transesophageal echocardiography (TEE) and CT as well as the device size implanted in patients. RESULTS The device size predicted by 3D-TEE and CT corresponded to the implanted device size in 8/15 (53%) and 10/15 (67%), respectively. The predicted device size from the P3DPM was accurate in all patients, obtaining perfect contact with the LAA wall, without device instability or excessive compression. P3DPM-CT with the deployed device showed device deformation and positioning of the disk in relation to the pulmonary veins, allowing us to determine the best device size in all 15 cases. CONCLUSION P3DPM allowed us to simulate the LAA closure procedure and thus helped to identify the best Amulet size and position within the LAA. KEY POINTS • A 3D-printed heart model allows to simulate the LAA closure procedure. • A 3D-printed heart model allowed to identify the optimal Amulet size and position. • 3D-printed heart models may contribute to reduce the Amulet implantation learning curve.
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Affiliation(s)
- Anne-Lise Hachulla
- Division of Radiology, University Hospitals of Geneva, Rue Gabrielle-Perret-Gentil 4, 1291, Geneva, Switzerland.
| | - Stéphane Noble
- Department of Cardiology, University Hospitals of Geneva, Geneva, Switzerland
| | - Gabriel Guglielmi
- Division of Radiology, University Hospitals of Geneva, Rue Gabrielle-Perret-Gentil 4, 1291, Geneva, Switzerland
| | - Daniel Agulleiro
- Computer Science Center, Faculty of Science, Carouge, Switzerland
| | - Hajo Müller
- Department of Cardiology, University Hospitals of Geneva, Geneva, Switzerland
| | - Jean-Paul Vallée
- Division of Radiology, University Hospitals of Geneva, Rue Gabrielle-Perret-Gentil 4, 1291, Geneva, Switzerland
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Ruefer A, Bapst C, Benz R, Bremerich J, Cantoni N, Infanti L, Samii K, Schmid M, Vallée JP. Role of liver magnetic resonance imaging in hyperferritinaemia and the diagnosis of iron overload. Swiss Med Wkly 2017; 147:w14550. [PMID: 29120023 DOI: 10.4414/smw.2017.14550] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Hyperferritinaemia is a frequent clinical problem. Elevated serum ferritin levels can be detected in different genetic and acquired diseases and can occur with or without anaemia. It is therefore important to determine whether hyperferritinaemia is due to iron overload or due to a secondary cause. The main causes of iron overload are intestinal iron hyperabsorption disorders and transfusion-dependent disorders. Iron homeostasis and iron overload are quantified by different diagnostic approaches. The evaluation of serum ferritin and transferrin saturation is the first diagnostic step to identify the cause of hyperferritinaemia. The assessment of liver iron concentration by liver biopsy or magnetic resonance imaging (MRI) may guide the further diagnostic and therapeutic workup. Liver biopsy is invasive and poorly accepted by patients and should only be carried out in selected patients with hereditary haemochromatosis. As a non-invasive approach, MRI is considered the standard method to diagnose and to monitor both hepatic iron overload and the effectiveness of iron chelation therapy in many clinical conditions such as thalassaemia and myelodysplastic syndromes. Accurate evaluation and monitoring of iron overload has major implications regarding adherence, quality of life and prognosis. There are different technical MRI approaches to measuring the liver iron content. Of these, T2 and T2* relaxometry are considered the standard of care. MRI with cardiac T2* mapping is also suitable for the assessment of cardiac iron. Currently there is no consensus which technique should be preferred. The choice depends on local availability and patient population. However, it is important to use the same MRI technique in subsequent visits in the same patient to get comparable results. Signal intensity ratio may be a good adjunct to R2 and R2* methods as it allows easy visual estimation of the liver iron concentration. In this review a group of Swiss haematologists and radiologists give an overview of different conditions leading to primary or secondary iron overload and on diagnostic methods to assess hyperferritinaemia with a focus on the role of liver MRI. They summarise the standard practice in Switzerland on the use of liver iron concentration MRI as well as disease-specific guideline recommendations.
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Affiliation(s)
- Axel Ruefer
- Department of Haematology, Luzerner Kantonsspital, Switzerland
| | - Christine Bapst
- Department of Haematology, University Hospital Bern, Switzerland
| | - Rudolf Benz
- Department of Haematology, Kantonsspital Münsterlingen, Switzerland
| | - Jens Bremerich
- Department of Radiology, University Hospital Basel, Switzerland
| | - Nathan Cantoni
- Department of Haematology, Kantonsspital Aarau, Switzerland
| | - Laura Infanti
- Department of Haematology, Blutspendezentrum SRK beider Basel, Switzerland
| | - Kaveh Samii
- Department of Haematology, University Hospital Geneva, Switzerland
| | - Mathias Schmid
- Department of Haematology, Stadtspital Triemli, Zürich, Switzerland
| | - Jean-Paul Vallée
- Department of Radiology, University Hospital Geneva, Switzerland
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Hachulla AL, Lador F, Muller H, Guglielmi G, Noble S, Crowe L, Soccal PM, Beghetti M, Vallée JP. MRI derived global right ventricle diastolic strains correlate with mPAP in CTEPH. Imaging 2017. [DOI: 10.1183/1393003.congress-2017.pa3734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Crowe LA, Montecucco F, Carbone F, Friedli I, Hachulla AL, Braunersreuther V, Mach F, Vallée JP. 4D cardiac imaging at clinical 3.0T provides accurate assessment of murine myocardial function and viability. Magn Reson Imaging 2017; 44:46-54. [PMID: 28827099 DOI: 10.1016/j.mri.2017.07.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 07/22/2017] [Accepted: 07/23/2017] [Indexed: 12/01/2022]
Abstract
OBJECTIVES We validate a 4D strategy tailored for 3T clinical systems to simultaneously quantify function and infarct size in wild type mice after ischemia/reperfusion, with improved spatial and temporal resolution by comparison to previous published protocols using clinical field MRI systems. METHODS C57BL/6J mice underwent 60min ischemia/reperfusion (n=14) or were controls without surgery (n=6). Twenty-four hours after surgery mice were imaged with gadolinium injection and sacrificed for post-mortem MRI and histology with serum also taken for Troponin I levels. The double ECG- and respiratory-triggered 3D FLASH (Fast Low Angle Shot) gradient echo (GRE) cine sequence had an acquired isotropic resolution of 344μm, TR/TE of 7.8/2.9ms and acquisition time 25-35min. The conventional 2D FLASH cine sequence had the same in-plane resolution of 344μm, 1mm slice thickness and TR/TE 11/5.4ms for an acquisition time of 20-25min plus 5min for planning. Left ventricle (LV) and right ventricle (RV) volumes were measured and functional parameters compared 2D to 3D, left to right and for inter and intra observer reproducibility. MRI infarct volume was compared to histology. RESULTS For the function evaluation, the 3D cine outperformed 2D cine for spatial and temporal resolution. Protocol time for the two methods was equivalent (25-35min). Flow artifacts were reduced (p=0.008) and epi/endo-cardial delineation showed good intra and interobserver reproducibility. Paired t-test comparing ejection volume left to right showed no significant difference for 3D (p=0.37), nor 2D (p=0.30) and correlation slopes of left to right EV were 1.17 (R2=0.75) for 2D and 1.05 (R2=0.50) for 3D. Quantifiable 'late gadolinium enhancement' infarct volume was seen only with the 3D cine and correlated to histology (R2=0.89). Left ejection fraction and MRI-measured infarct volume correlated (R2>0.3). CONCLUSIONS The 4D strategy, with contrast injection, was validated in mice for function and infarct quantification from a single scan with minimal slice planning.
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Affiliation(s)
- Lindsey A Crowe
- Division of Radiology, Department of Radiology and Medical Informatics, Geneva University Hospital and Faculty of Medicine, University of Geneva, 4 rue Gabrielle-Perret-Gentil, 1205 Geneva, Switzerland.
| | - Fabrizio Montecucco
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, 6 viale Benedetto XV, 16132 Genoa, Italy; IRCCS AOU San Martino - IST, Genova, 10 Largo Rosanna Benzi, 16132 Genoa, Italy.
| | - Federico Carbone
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, 6 viale Benedetto XV, 16132 Genoa, Italy.
| | - Iris Friedli
- Division of Radiology, Department of Radiology and Medical Informatics, Geneva University Hospital and Faculty of Medicine, University of Geneva, 4 rue Gabrielle-Perret-Gentil, 1205 Geneva, Switzerland.
| | - Anne-Lise Hachulla
- Division of Radiology, Department of Radiology and Medical Informatics, Geneva University Hospital and Faculty of Medicine, University of Geneva, 4 rue Gabrielle-Perret-Gentil, 1205 Geneva, Switzerland.
| | - Vincent Braunersreuther
- Division of Pathology, Department of Genetics and Laboratory Medicine, Geneva University Hospitals, 4 rue Gabrielle-Perret-Gentil, 1205 Geneva, Switzerland.
| | - François Mach
- Division of Cardiology, Foundation for Medical Researches, Faculty of Medicine, Department of Internal Medicine, University of Geneva, 64 avenue de la Roseraie, 1211 Geneva, Switzerland.
| | - Jean-Paul Vallée
- Division of Radiology, Department of Radiology and Medical Informatics, Geneva University Hospital and Faculty of Medicine, University of Geneva, 4 rue Gabrielle-Perret-Gentil, 1205 Geneva, Switzerland.
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Abstract
Chronic kidney disease (CKD) is defined as an alteration of kidney function and/or structure lasting for more than 3 months and is a major public health issue. Histologically, the severity of CKD correlates with the magnitude of kidney cortical interstitial fibrosis. Estimation of kidney fibrosis is crucial to assess prognosis and guide therapy in both native and allograft kidneys. Biopsy is currently the gold standard for assessing fibrosis with histological techniques. Although this procedure has become safer over recent years, complications and limitations remain. Given these restrictions, new, noninvasive techniques are necessary for the evaluation and follow-up of CKD patients. Radiological methods such as ultrasound and magnetic resonance imaging are emerging for assessment kidney fibrosis. These two techniques have advantages but also limitations. In addition to radiological assessment of fibrosis, urinary and plasma biomarkers are being developed and tested as predictive tools for histological lesions in the kidney. This article reviews the current evidence for these novel techniques in the evaluation of kidney interstitial fibrosis.
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Affiliation(s)
- Lena Berchtold
- Service of Internal Medicine, Department of Internal Medicine, University Hospital of Geneva, Switzerland; Service of Nephrology, Department of Internal Medicine Specialties, University Hospital of Geneva, Switzerland
| | - Iris Friedli
- Service of Radiology, Department of Radiology and Medical Informatics, University Hospital of Geneva, Switzerland
| | - Jean-Paul Vallée
- Service of Radiology, Department of Radiology and Medical Informatics, University Hospital of Geneva, Switzerland
| | - Solange Moll
- Institute of Clinical Pathology, University Hospital Geneva, Switzerland
| | - Pierre-Yves Martin
- Service of Nephrology, Department of Internal Medicine Specialties, University Hospital of Geneva, Switzerland
| | - Sophie de Seigneux
- Service of Nephrology, Department of Internal Medicine Specialties, University Hospital of Geneva, Switzerland
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Myers P, Sologashvili T, Meyer P, Vallée JP, Huber C. Posterior wall left ventricular aneurysm repair. Multimed Man Cardiothorac Surg 2017; 2017. [PMID: 28556630 DOI: 10.1510/mmcts.2017.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Posterior wall aneurysms are a relatively rare form of left ventricular aneurysm that can sometimes involve the mitral valve. This tutorial illustrates the technical aspects of posterior wall left ventricular aneurysm repair.
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Friedli I, Crowe LA, de Perrot T, Berchtold L, Martin PY, de Seigneux S, Vallée JP. Comparison of readout-segmented and conventional single-shot for echo-planar diffusion-weighted imaging in the assessment of kidney interstitial fibrosis. J Magn Reson Imaging 2017; 46:1631-1640. [DOI: 10.1002/jmri.25687] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Accepted: 02/13/2017] [Indexed: 12/27/2022] Open
Affiliation(s)
- Iris Friedli
- Division of Radiology, Geneva University Hospitals; University of Geneva, Faculty of Medicine; Geneva Switzerland
| | - Lindsey Alexandra Crowe
- Division of Radiology, Geneva University Hospitals; University of Geneva, Faculty of Medicine; Geneva Switzerland
| | - Thomas de Perrot
- Division of Radiology, Geneva University Hospitals; University of Geneva, Faculty of Medicine; Geneva Switzerland
| | - Lena Berchtold
- Division of Nephrology, Geneva University Hospitals; University of Geneva, Faculty of Medicine; Geneva Switzerland
| | - Pierre-Yves Martin
- Division of Nephrology, Geneva University Hospitals; University of Geneva, Faculty of Medicine; Geneva Switzerland
| | - Sophie de Seigneux
- Division of Nephrology, Geneva University Hospitals; University of Geneva, Faculty of Medicine; Geneva Switzerland
| | - Jean-Paul Vallée
- Division of Radiology, Geneva University Hospitals; University of Geneva, Faculty of Medicine; Geneva Switzerland
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Orci LA, Oldani G, Lacotte S, Slits F, Friedli I, Wirth W, Toso C, Vallée JP, Crowe LA. Dynamic Volume Assessment of Hepatocellular Carcinoma in Rat Livers Using a Clinical 3T MRI and Novel Segmentation. J INVEST SURG 2017; 31:44-53. [PMID: 28107094 DOI: 10.1080/08941939.2016.1276987] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
PURPOSE In vivo liver cancer research commonly uses rodent models. One of the limitations of such models is the lack of accurate and reproducible endpoints for a dynamic assessment of growing tumor nodules. The aim of this study was to validate a noninvasive, true volume segmentation method using two rat hepatocellular carcinoma (HCC) models, correlating magnetic resonance imaging (MRI) with histological volume measurement, and with blood levels of α-fetoprotein. MATERIALS AND METHODS We used 3T clinical MRI to quantify tumor volume with follow-up over time. Using two distinct rat HCC models, calculated MRI tumor volumes were correlated with volumes from histological sections, or with blood levels of α-fetoprotein. Eleven rats, comprising six Buffalo rats (n = 9 scans) and five Fischer rats (n = 14 tumors), were injected in the portal vein with 2.5 × 105 and 2.0 × 106 syngeneic HCC cells, respectively. Longitudinal (T1) relaxation time- and transverse (T2) relaxation time-weighted MR images were acquired. RESULTS The three-dimensional (3D) T1-weighted gradient echo had 0.35-mm isotropic resolution allowing accurate semi-automatic volume segmentation. 2D T2-weighted imaging provided high tumor contrast. Segmentation of combined 3D gradient echo T1-weighted images and 2D turbo spin echo T2-weighted images provided excellent correlation with histology (y = 0.866x + 0.034, R² = 0.997 p < .0001) and with α-fetoprotein (y = 0.736x + 1.077, R² = 0.976, p < .0001). There was robust inter- and intra-observer reproducibility (intra-class correlation coefficient > 0.998, p < .0001). CONCLUSIONS We have developed a novel, noninvasive contrast imaging protocol which enables semi-automatic 3D volume quantification to analyze nonspherical tumor nodules and to follow up the growth of tumor nodules over time.
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Affiliation(s)
- Lorenzo A Orci
- a Divisions of Abdominal and Transplantation Surgery, Hepato-Pancreato-Biliary Centre, Department of Surgery , University Hospitals of Geneva and Faculty of Medicine, University of Geneva , Geneva , Switzerland
| | - Graziano Oldani
- a Divisions of Abdominal and Transplantation Surgery, Hepato-Pancreato-Biliary Centre, Department of Surgery , University Hospitals of Geneva and Faculty of Medicine, University of Geneva , Geneva , Switzerland
| | - Stephanie Lacotte
- a Divisions of Abdominal and Transplantation Surgery, Hepato-Pancreato-Biliary Centre, Department of Surgery , University Hospitals of Geneva and Faculty of Medicine, University of Geneva , Geneva , Switzerland
| | - Florence Slits
- a Divisions of Abdominal and Transplantation Surgery, Hepato-Pancreato-Biliary Centre, Department of Surgery , University Hospitals of Geneva and Faculty of Medicine, University of Geneva , Geneva , Switzerland
| | - Iris Friedli
- b Division of Radiology , University Hospitals of Geneva and Faculty of Medicine, University of Geneva , Geneva , Switzerland
| | - Wolfgang Wirth
- c Institute of Anatomy, Paracelsus Medical University , Salzburg , Austria
| | - Christian Toso
- a Divisions of Abdominal and Transplantation Surgery, Hepato-Pancreato-Biliary Centre, Department of Surgery , University Hospitals of Geneva and Faculty of Medicine, University of Geneva , Geneva , Switzerland
| | - Jean-Paul Vallée
- b Division of Radiology , University Hospitals of Geneva and Faculty of Medicine, University of Geneva , Geneva , Switzerland
| | - Lindsey A Crowe
- b Division of Radiology , University Hospitals of Geneva and Faculty of Medicine, University of Geneva , Geneva , Switzerland
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Berchtold L, Ponte B, Moll S, Hadaya K, Seyde O, Bachtler M, Vallée JP, Martin PY, Pasch A, de Seigneux S. Phosphocalcic Markers and Calcification Propensity for Assessment of Interstitial Fibrosis and Vascular Lesions in Kidney Allograft Recipients. PLoS One 2016; 11:e0167929. [PMID: 28036331 PMCID: PMC5201285 DOI: 10.1371/journal.pone.0167929] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 11/22/2016] [Indexed: 11/18/2022] Open
Abstract
Renal interstitial fibrosis and arterial lesions predict loss of function in chronic kidney disease. Noninvasive estimation of interstitial fibrosis and vascular lesions is currently not available. The aim of the study was to determine whether phosphocalcic markers are associated with, and can predict, renal chronic histological changes. We included 129 kidney allograft recipients with an available transplant biopsy in a retrospective study. We analyzed the associations and predictive values of phosphocalcic markers and serum calcification propensity (T50) for chronic histological changes (interstitial fibrosis and vascular lesions). PTH, T50 and vitamin D levels were independently associated to interstitial fibrosis. PTH elevation was associated with increasing interstitial fibrosis severity (r = 0.29, p = 0.001), while T50 and vitamin D were protective (r = -0.20, p = 0.025 and r = -0.23, p = 0.009 respectively). On the contrary, fibroblast growth factor 23 (FGF23) and Klotho correlated only modestly with interstitial fibrosis (p = 0.045) whereas calcium and phosphate did not. PTH, vitamin D and T50 were predictors of extensive fibrosis (AUC: 0.73, 0.72 and 0.68 respectively), but did not add to renal function prediction. PTH, FGF23 and T50 were modestly predictive of low fibrosis (AUC: 0.63, 0.63 and 0.61) but did not add to renal function prediction. T50 decreased with increasing arterial lesions (r = -0.21, p = 0.038). The discriminative performance of T50 in predicting significant vascular lesions was modest (AUC 0.61). In summary, we demonstrated that PTH, vitamin D and T50 are associated to interstitial fibrosis and vascular lesions in kidney allograft recipients independently of renal function. Despite these associations, mineral metabolism indices do not show superiority or additive value to fibrosis prediction by eGFR and proteinuria in kidney allograft recipients, except for vascular lesions where T50 could be of relevance.
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Affiliation(s)
- Lena Berchtold
- Service of Internal Medicine, Department of Internal Medicine, University Hospital of Geneva, Geneva, Switzerland
- Service of Nephrology, Department of Internal Medicine Specialities, University Hospital of Geneva, Geneva, Switzerland
| | - Belen Ponte
- Service of Nephrology, Department of Internal Medicine Specialities, University Hospital of Geneva, Geneva, Switzerland
| | - Solange Moll
- Institute of Clinical Pathology, Departement of Clinical Pathology, University Hospital of Geneva, Geneva, Switzerland
| | - Karine Hadaya
- Service of Nephrology, Department of Internal Medicine Specialities, University Hospital of Geneva, Geneva, Switzerland
| | - Olivia Seyde
- Institute of Clinical Pathology, Departement of Clinical Pathology, University Hospital of Geneva, Geneva, Switzerland
| | - Matthias Bachtler
- Service of Clinical Research, Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Jean-Paul Vallée
- Service of Radiology, Department of Radiology and Medical Informatics, University Hospital of Geneva, Geneva, Switzerland
| | - Pierre-Yves Martin
- Service of Nephrology, Department of Internal Medicine Specialities, University Hospital of Geneva, Geneva, Switzerland
| | - Andreas Pasch
- Service of Clinical Research, Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Sophie de Seigneux
- Service of Nephrology, Department of Internal Medicine Specialities, University Hospital of Geneva, Geneva, Switzerland
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Myers P, Sologashvili T, Wacker J, Vallée JP, Beghetti M, Prêtre R. Yasui procedure. Multimed Man Cardiothorac Surg 2016; 2016. [PMID: 28195688 DOI: 10.1510/mmcts.2016.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
There are rare situations in which the left ventricular outflow tract cannot be used for systemic output. The Yasui procedure allows leaving the left ventricle as the systemic ventricle, but uses the pulmonary valve as the systemic semilunar valve. These videos illustrate the technical aspects of the Yasui procedure.
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Hachulla AL, Ronot M, Noble S, Becker CD, Montet X, Vallée JP. ECG-triggered high-pitch CT for simultaneous assessment of the aorta and coronary arteries. J Cardiovasc Comput Tomogr 2016; 10:407-13. [DOI: 10.1016/j.jcct.2016.07.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 07/10/2016] [Indexed: 12/21/2022]
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Berchtold L, Friedli I, Crowe LA, Moll S, Hadaya K, De Perrot T, Vesin C, Martin PY, Vallée JP, de Seigneux S. SP234NONINVASIVE ASSESSMENT OF FIBROSIS BY MAGNETIC RESONANCE IMAGING: VALIDATION OF A NOVEL INDEX FROM T1 MAPPING AND DIFFUSION-WEIGHTED IMAGING IN ANIMALS MODELS AND KIDNEY ALLOGRAFT RECIPIENTS. Nephrol Dial Transplant 2016. [DOI: 10.1093/ndt/gfw163.15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Carbone F, Crowe LA, Roth A, Burger F, Lenglet S, Braunersreuther V, Brandt KJ, Quercioli A, Mach F, Vallée JP, Montecucco F. Treatment with anti-RANKL antibody reduces infarct size and attenuates dysfunction impacting on neutrophil-mediated injury. J Mol Cell Cardiol 2016; 94:82-94. [PMID: 27056420 DOI: 10.1016/j.yjmcc.2016.03.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 03/14/2016] [Accepted: 03/23/2016] [Indexed: 10/22/2022]
Abstract
Selective pharmacological treatments targeting reperfusion injury produced modest protective effects and might be associated with immunosuppression. In order to identify novel and better-tolerated approaches, we focused on the neutralization of receptor activator of nuclear factor kappa-B ligand [RANKL], a cytokine recently shown to activate inflammatory cells (i.e. neutrophils) orchestrating post-infarction injury and repair. Myocardial ischemia (60min) and reperfusion injury was surgically induced in C57Bl/6 mice. In hearts and serum, RANKL was early upregulated during reperfusion. A "one-shot" injection with neutralizing anti-RANKL IgG during ischemia ameliorated myocardial infarct size and function, but not adverse remodeling (determined by Magnetic Resonance Imaging [MRI]) as compared to Vehicle or control IgG. These beneficial effects were accompanied in vivo by reduction in cardiac neutrophil infiltration, reactive oxygen species (ROS) and MMP-9 release. Anti-RANKL IgG treatment suppressed sudden peak of neutrophil granule products in mouse serum early after reperfusion onset. In vitro, RANK mRNA expression was detected in isolated mouse neutrophils. Co-incubation with neutralizing anti-RANKL IgG abrogated RANKL-induced mouse neutrophil degranulation and migration, suggesting a critical role of RANKL in neutrophil-mediated injury. Conversely, anti-RANKL IgG did not affect salvage pathways in cardiac cells (i.e. ERK p42/p44, Akt and STAT-3) or macrophage cardiac infiltration. Finally, treatment with anti-RANKL IgG showed no effect on B and T lymphocyte polarization (in serum, spleen and infarcted myocardium) and circulating chemokines as compared with Vehicle or control IgG. In conclusion, acute treatment with anti-RANKL IgG improved cardiac infarct size and function by potentially impacting on neutrophil-mediated injury and repair.
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Affiliation(s)
- Federico Carbone
- Division of Cardiology, Foundation for Medical Researches, Faculty of Medicine, Department of Internal Medicine, University of Geneva, 1211 Geneva, Switzerland
| | - Lindsey A Crowe
- Division of Radiology, Geneva University Hospital and Faculty of Medicine, 1205 Geneva, Switzerland
| | - Aline Roth
- Division of Cardiology, Foundation for Medical Researches, Faculty of Medicine, Department of Internal Medicine, University of Geneva, 1211 Geneva, Switzerland
| | - Fabienne Burger
- Division of Cardiology, Foundation for Medical Researches, Faculty of Medicine, Department of Internal Medicine, University of Geneva, 1211 Geneva, Switzerland
| | - Sébastien Lenglet
- Division of Cardiology, Foundation for Medical Researches, Faculty of Medicine, Department of Internal Medicine, University of Geneva, 1211 Geneva, Switzerland
| | - Vincent Braunersreuther
- Division of Pathology, Department of Genetics and Laboratory Medicine, Geneva University Hospitals, 1205 Geneva, Switzerland
| | - Karim J Brandt
- Division of Cardiology, Foundation for Medical Researches, Faculty of Medicine, Department of Internal Medicine, University of Geneva, 1211 Geneva, Switzerland
| | - Alessandra Quercioli
- Division of Cardiology, Foundation for Medical Researches, Faculty of Medicine, Department of Internal Medicine, University of Geneva, 1211 Geneva, Switzerland
| | - François Mach
- Division of Cardiology, Foundation for Medical Researches, Faculty of Medicine, Department of Internal Medicine, University of Geneva, 1211 Geneva, Switzerland
| | - Jean-Paul Vallée
- Division of Radiology, Geneva University Hospital and Faculty of Medicine, 1205 Geneva, Switzerland
| | - Fabrizio Montecucco
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa School of Medicine and IRCCS Azienda Ospedaliera Universitaria San Martino-IST Istituto Nazionale per la Ricerca sul Cancro, 6 viale Benedetto XV, 16132 Genoa, Italy.
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Biver E, Perréard Lopreno G, Hars M, van Rietbergen B, Vallée JP, Ferrari S, Besse M, Rizzoli R. Occupation-dependent loading increases bone strength in men. Osteoporos Int 2016; 27:1169-1179. [PMID: 26576541 DOI: 10.1007/s00198-015-3409-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Accepted: 11/05/2015] [Indexed: 01/09/2023]
Abstract
SUMMARY Ex vivo analyses of humeri and radii from an anthropological collection and in vivo analyses of the distal radius of retired men indicate that occupation-dependent loading positively influences bone strength by an increase of bone size when young followed by a slowdown of the age-related endocortical and trabecular bone alteration. INTRODUCTION Skeleton responds to mechanical stimuli, but it is not established whether chronic loading in the context of occupational activities (OA) influences bone properties. We assessed the impact of occupation-dependent loading on upper limb bone strength. METHODS Individuals were classified according to the intensity of physical loading associated with their OA in two models. Ex vivo, computed tomography scans of the humeri and radii of 219 male skeletons (age of death, 20-93 years) from an anthropological collection of the 20th century (Simon collection) were used to determine estimates of bone strength and cross-sectional geometry. In vivo, distal radius were analysed in 180 men enrolled in the Geneva Retirees Cohort study using high-resolution peripheral quantitative computed tomography and finite element analysis. RESULTS Heavy-loading OA was associated with higher bone strength in both models. This benefit was associated with higher total area (Tt.Ar), medullary area (Me.Ar) and cortical area (Ct.Ar) in young adult skeletons, but the difference decreased in older age. In older men, the humerus supporting heavy loading had a lower Me.Ar. This effect resulted in greater asymmetries of the Me.Ar and the Ct.Ar/Tt.Ar ratio between the humeri of men with unilateral versus bilateral heavy-loading OA. In vivo, an additional benefit of heavy-loading OA was observed on the distal radius trabecular density and microstructure. CONCLUSION Repeated occupation-dependent loading positively influences bone strength by an increase of bone size when young followed by a slowdown of the age-related endocortical and trabecular bone alteration. These data supports the necessity to promote bone health in the context of sedentary occupation.
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Affiliation(s)
- E Biver
- Division of Bone Diseases, Department of Internal Medicine Specialties, Geneva University Hospitals and Faculty of Medicine, 4 Rue Gabrielle Perret-Gentil, 1211, Geneva 14, Switzerland.
| | - G Perréard Lopreno
- Laboratory of Prehistoric Archaeology and Anthropology, F.-A. Forel Institut - Section of Earth and Environmental Sciences, University of Geneva. Uni Carl Vogt, 66 boulevard Carl Vogt, 1211, Geneva 4, Switzerland
| | - M Hars
- Division of Bone Diseases, Department of Internal Medicine Specialties, Geneva University Hospitals and Faculty of Medicine, 4 Rue Gabrielle Perret-Gentil, 1211, Geneva 14, Switzerland
| | - B van Rietbergen
- Department of Biomedical Engineering, Eindhoven University of Technology, PO Box 513, Eindhoven, MB 5600, Netherlands
| | - J P Vallée
- Division of Radiology, Geneva University Hospitals and Faculty of Medicine, 4 Rue Gabrielle Perret-Gentil, 1211, Geneva 14, Switzerland
| | - S Ferrari
- Division of Bone Diseases, Department of Internal Medicine Specialties, Geneva University Hospitals and Faculty of Medicine, 4 Rue Gabrielle Perret-Gentil, 1211, Geneva 14, Switzerland
| | - M Besse
- Laboratory of Prehistoric Archaeology and Anthropology, F.-A. Forel Institut - Section of Earth and Environmental Sciences, University of Geneva. Uni Carl Vogt, 66 boulevard Carl Vogt, 1211, Geneva 4, Switzerland
| | - R Rizzoli
- Division of Bone Diseases, Department of Internal Medicine Specialties, Geneva University Hospitals and Faculty of Medicine, 4 Rue Gabrielle Perret-Gentil, 1211, Geneva 14, Switzerland
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de Perrot T, Scheffler M, Boto J, Delattre BMA, Combescure C, Pusztaszeri M, Tille JC, Iselin C, Vallée JP. Diffusion in prostate cancer detection on a 3T scanner: How many b-values are needed? J Magn Reson Imaging 2016; 44:601-9. [DOI: 10.1002/jmri.25206] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 02/09/2016] [Indexed: 12/30/2022] Open
Affiliation(s)
- Thomas de Perrot
- Division of Radiology; Geneva University Hospitals; Geneva Switzerland
| | - Max Scheffler
- Division of Radiology; Geneva University Hospitals; Geneva Switzerland
| | - José Boto
- Division of Radiology; Geneva University Hospitals; Geneva Switzerland
| | | | | | - Marc Pusztaszeri
- Division of Clinical Pathology; Geneva University Hospitals; Geneva Switzerland
| | | | - Christophe Iselin
- Division of Urologic Surgery; Geneva University Hospitals; Geneva Switzerland
| | - Jean-Paul Vallée
- Division of Radiology; Geneva University Hospitals; Geneva Switzerland
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Schulze F, Gramoun A, Crowe LA, Dienelt A, Akcan T, Hofmann H, Vallée JP, Duda GN, Ode A. Accumulation of amino-polyvinyl alcohol-coated superparamagnetic iron oxide nanoparticles in bone marrow: implications for local stromal cells. Nanomedicine (Lond) 2015. [DOI: 10.2217/nnm.15.62] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Aims: First, it will be investigated if amino-polyvinyl alcohol-coated superparamagnetic iron oxide nanoparticles (A-PVA-SPIONs) are suitable for MRI contrast enhancement in bone marrow. Second, the impact of A-PVA-SPION exposure in vivo on the viability and key functions of local bone marrow stromal cells (BMSCs) will be investigated. Material & methods: Animals were systemically injected with A-PVA-SPIONs, followed by a 7-day survival time. Accumulation of A-PVA-SPIONs was confirmed by MRI, histology and inductively coupled plasma optical emission spectrometry. BMSCs were isolated from bone marrow for in vitro assessment of their viability and regenerative key functions. Results: In this study, A-PVA-SPIONs were found to accumulate in bone marrow and increase the BMSCs’ metabolic activity and migration rate. Conclusion: A-PVA-SPIONs appear suitable for contrast enhancement in bone marrow while our data suggest an influence on the BMSCs biology that necessitates future research.
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Affiliation(s)
- Frank Schulze
- Julius Wolff Institute, Charité – Universitätsmedizin Berlin, 13353 Berlin, Germany
- Berlin-Brandenburg School for Regenerative Therapies, Charité – Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Azza Gramoun
- Department of Radiology, Geneva University Hospitals & University of Geneva, 1205 Geneva, Switzerland
- Department of Oral Biology, Faculty of Oral & Dental Medicine, Cairo University, Cairo, Egypt
| | - Lindsey A Crowe
- Department of Radiology, Geneva University Hospitals & University of Geneva, 1205 Geneva, Switzerland
| | - Anke Dienelt
- Julius Wolff Institute, Charité – Universitätsmedizin Berlin, 13353 Berlin, Germany
- Berlin-Brandenburg Center for Regenerative Therapies, Charité – Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Tugba Akcan
- Julius Wolff Institute, Charité – Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Heinrich Hofmann
- Laboratory of Powder Technology, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Jean-Paul Vallée
- Department of Radiology, Geneva University Hospitals & University of Geneva, 1205 Geneva, Switzerland
| | - Georg N Duda
- Julius Wolff Institute, Charité – Universitätsmedizin Berlin, 13353 Berlin, Germany
- Berlin-Brandenburg Center for Regenerative Therapies, Charité – Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Andrea Ode
- Julius Wolff Institute, Charité – Universitätsmedizin Berlin, 13353 Berlin, Germany
- Berlin-Brandenburg Center for Regenerative Therapies, Charité – Universitätsmedizin Berlin, 13353 Berlin, Germany
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Friedli I, Crowe LA, Viallon M, Porter DA, Martin PY, de Seigneux S, Vallée JP. Improvement of renal diffusion-weighted magnetic resonance imaging with readout-segmented echo-planar imaging at 3T. Magn Reson Imaging 2015; 33:701-8. [DOI: 10.1016/j.mri.2015.02.023] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Accepted: 02/20/2015] [Indexed: 01/06/2023]
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Vermeij EA, Koenders MI, Bennink MB, Crowe LA, Maurizi L, Vallée JP, Hofmann H, van den Berg WB, van Lent PLEM, van de Loo FAJ. The in-vivo use of superparamagnetic iron oxide nanoparticles to detect inflammation elicits a cytokine response but does not aggravate experimental arthritis. PLoS One 2015; 10:e0126687. [PMID: 25955417 PMCID: PMC4425489 DOI: 10.1371/journal.pone.0126687] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Accepted: 04/07/2015] [Indexed: 12/21/2022] Open
Abstract
Background Superparamagnetic Iron Oxide Nanoparticles (SPION) are used in diagnostic imaging of a variety of different diseases. For such in-vivo application, an additional coating with a polymer, for example polyvinyl alcohol (PVA), is needed to stabilize the SPION and prevent aggregation. As the particles are foreign to the body, reaction against the SPION could occur. In this study we investigated the effects that SPION may have on experimental arthritis after intra-articular (i.a.) or intravenous (i.v.) injection. Methods PVA-coated SPION were injected either i.a. (6 or 24 μg iron) or i.v. (100 μg or 1 mg iron) into naïve Toll-like receptor-4 deficient (TLR4-/-) or wild-type C57Bl/6 mice, or C57Bl/6 mice with antigen-induced arthritis. As control, some mice were injected with PVA or PBS. MR imaging was performed at 1 and 7 days after injection. Mice were sacrificed 2 hours and 1, 2, 7, 10 and 14 days after injection of the SPION, and RNA from synovium and liver was isolated for pro-inflammatory gene expression analysis. Serum cytokine measurements and whole knee joint histology were also performed. Results Injection of a high dose of SPION or PVA into naïve knee joints resulted in an immediate upregulation of pro-inflammatory gene expression in the synovium. A similar gene expression profile was observed after SPION or PVA injection into knee joints of TLR4-/- mice, indicating that this effect is not due to LPS contamination. Histological analysis of the knee joints also revealed synovial inflammation after SPION injection. Two hours after i.v. injection of SPION or PVA into naïve mice, an upregulation of pro-inflammatory gene expression was detected in the liver. Administration of SPION or PVA into arthritic mice via i.a. injection did not result in an upregulation in gene expression and also no additional effects were observed on histology. MR imaging and histology showed long-term retention of SPION in the inflamed joint. However, 14 days after the injections no long-term effects were evident for gene expression, histology or serum cytokine concentrations. Conclusions Injection of SPION, either locally or systemically, gives an acute inflammatory response. In the long term, up to 14 days after the injection, while the SPION reside in the joint, no further activating effects of SPION were observed. Hence, we conclude that SPION do not aggravate arthritis and can therefore be used safely to detect joint inflammation by MR imaging.
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Affiliation(s)
- Eline A. Vermeij
- Experimental Rheumatology, Department of Rheumatology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Marije I. Koenders
- Experimental Rheumatology, Department of Rheumatology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Miranda B. Bennink
- Experimental Rheumatology, Department of Rheumatology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Lindsey A. Crowe
- Division of Radiology, Geneva University Hospitals, University of Geneva, Faculty of Medicine, Geneva, Switzerland
| | - Lionel Maurizi
- Laboratory of Powder Technology, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Jean-Paul Vallée
- Division of Radiology, Geneva University Hospitals, University of Geneva, Faculty of Medicine, Geneva, Switzerland
| | - Heinrich Hofmann
- Laboratory of Powder Technology, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Wim B. van den Berg
- Experimental Rheumatology, Department of Rheumatology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Peter L. E. M. van Lent
- Experimental Rheumatology, Department of Rheumatology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Fons A. J. van de Loo
- Experimental Rheumatology, Department of Rheumatology, Radboud University Medical Center, Nijmegen, the Netherlands
- * E-mail:
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Wirth GJ, Zilli T, Roth A, Amram ML, Biton C, Tille JC, Pusztaszeri M, Rubbia-Brandt L, Vallée JP, De Perrot T, Willi JP, Ratib O, Battagin-Fritsch A, Dietrich PY, Miralbell R, Iselin C. [Opening of the Geneva University Hospital Prostate Cancer Center]. Rev Med Suisse 2014; 10:2302-2305. [PMID: 25626245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In 2014, Geneva University Hospital has opened the first certified prostate cancer Center of western Switzerland. It incorporates 29 entities implicated in the diagnosis and treatment of this disease, thereby assuring that all available ressources are made available to patients, regardless of the division to which they were initially referred. The main strength of the Center lies in the synergy generated by its multidisciplinary tumor board. Furthermore, regular conferences, staff meetings, propectively held registers and the yearly re-certification audit support its constant quality improvement.
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Schulze F, Dienelt A, Geissler S, Zaslansky P, Schoon J, Henzler K, Guttmann P, Gramoun A, Crowe LA, Maurizi L, Vallée JP, Hofmann H, Duda GN, Ode A. Amino-polyvinyl alcohol coated superparamagnetic iron oxide nanoparticles are suitable for monitoring of human mesenchymal stromal cells in vivo. Small 2014; 10:4340-4351. [PMID: 24990430 DOI: 10.1002/smll.201400707] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2014] [Revised: 05/06/2014] [Indexed: 06/03/2023]
Abstract
Mesenchymal stromal cells (MSCs) are promising candidates in regenerative cell-therapies. However, optimizing their number and route of delivery remains a critical issue, which can be addressed by monitoring the MSCs' bio-distribution in vivo using super-paramagnetic iron-oxide nanoparticles (SPIONs). In this study, amino-polyvinyl alcohol coated (A-PVA) SPIONs are introduced for cell-labeling and visualization by magnetic resonance imaging (MRI) of human MSCs. Size and surface charge of A-PVA-SPIONs differ depending on their solvent. Under MSC-labeling conditions, A-PVA-SPIONs have a hydrodynamic diameter of 42 ± 2 nm and a negative Zeta potential of 25 ± 5 mV, which enable efficient internalization by MSCs without the need to use transfection agents. Transmission X-ray microscopy localizes A-PVA-SPIONs in intracellular vesicles and as cytosolic single particles. After identifying non-interfering cell-assays and determining the delivered and cellular dose, in addition to the administered dose, A-PVA-SPIONs are found to be non-toxic to MSCs and non-destructive towards their multi-lineage differentiation potential. Surprisingly, MSC migration is increased. In MRI, A-PVA-SPION-labeled MSCs are successfully visualized in vitro and in vivo. In conclusion, A-PVA-SPIONs have no unfavorable influences on MSCs, although it becomes evident how sensitive their functional behavior is towards SPION-labeling. And A-PVA-SPIONs allow MSC-monitoring in vivo.
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Affiliation(s)
- Frank Schulze
- Julius Wolff Institute, Charité - Universitätsmedizin Berlin, 13353, Berlin, Germany
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Akhmedov A, Montecucco F, Braunersreuther V, Camici GG, Jakob P, Reiner MF, Glanzmann M, Burger F, Paneni F, Galan K, Pelli G, Vuilleumier N, Belin A, Vallée JP, Mach F, Lüscher TF. Genetic deletion of the adaptor protein p66Shc increases susceptibility to short-term ischaemic myocardial injury via intracellular salvage pathways. Eur Heart J 2014; 36:516-26a. [PMID: 25336219 DOI: 10.1093/eurheartj/ehu400] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
AIMS Several intracellular mediators have been implicated as new therapeutic targets against myocardial ischaemia and reperfusion injury. However, clinically effective salvage pathways remain undiscovered. Here, we focused on the potential role of the adaptor protein p66(Shc) as a regulator of myocardial injury in a mouse model of cardiac ischaemia and reperfusion. METHODS AND RESULTS Adult male p66(Shc) deficient (p66(Shc) (-/-)) and C57Bl/6 wild-type (WT) mice were exposed to 30, 45, or 60 min of ischaemia and reperfusion (5, 15 min, or 24 h). Infarct size, systemic and intracardiac inflammation and oxidants, as well as cytosolic and mitochondrial apoptotic pathways were investigated. Following 30, but not 45 or 60 min of ischaemia, genetic p66(Shc) deficiency was associated with larger infarcts. In WT mice, in vivo p66(Shc) knock down by siRNA with transient protein deficiency confirmed these findings. P66(Shc) inhibition was not associated with any modification in post-infarction inflammation, oxidative burst nor cardiac vessel density or structure. However, in p66(Shc) (-/-) mice activation of the protective and anti-apoptotic Reperfusion Injury Salvage Kinases and Survivor Activating Factor Enhancement pathways were blunted and mitochondrial swelling and cellular apoptosis via the caspase-3 pathway increased compared with WT. CONCLUSIONS Genetic deletion of p66(Shc) increased susceptibility to myocardial injury in response to short-term ischaemia and reperfusion in mice. Still, additional studies are needed for assessing the role of this pathway in acute coronary syndrome patients.
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Affiliation(s)
- Alexander Akhmedov
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Zurich, Switzerland Department of Cardiology, University Heart Center, Center for Molecular Cardiology, University Hospital and University of Zurich, Rämistrasse 100, CH-8091 Zurich, Switzerland Zurich Center of Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Fabrizio Montecucco
- Division of Cardiology, Foundation for Medical Researches, University of Geneva, Geneva, Switzerland First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa School of Medicine, Genoa, Italy IRCCS Azienda Ospedaliera Universitaria San Martino-IST Istituto Nazionale per la Ricerca sul Cancro, Genoa, Italy
| | - Vincent Braunersreuther
- Division of Cardiology, Foundation for Medical Researches, University of Geneva, Geneva, Switzerland
| | - Giovanni G Camici
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Zurich, Switzerland Department of Cardiology, University Heart Center, Center for Molecular Cardiology, University Hospital and University of Zurich, Rämistrasse 100, CH-8091 Zurich, Switzerland Zurich Center of Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Philipp Jakob
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Zurich, Switzerland Department of Cardiology, University Heart Center, Center for Molecular Cardiology, University Hospital and University of Zurich, Rämistrasse 100, CH-8091 Zurich, Switzerland Zurich Center of Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Martin F Reiner
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Zurich, Switzerland Department of Cardiology, University Heart Center, Center for Molecular Cardiology, University Hospital and University of Zurich, Rämistrasse 100, CH-8091 Zurich, Switzerland Zurich Center of Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Martina Glanzmann
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Zurich, Switzerland Department of Cardiology, University Heart Center, Center for Molecular Cardiology, University Hospital and University of Zurich, Rämistrasse 100, CH-8091 Zurich, Switzerland Zurich Center of Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Fabienne Burger
- Division of Cardiology, Foundation for Medical Researches, University of Geneva, Geneva, Switzerland First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa School of Medicine, Genoa, Italy IRCCS Azienda Ospedaliera Universitaria San Martino-IST Istituto Nazionale per la Ricerca sul Cancro, Genoa, Italy
| | - Francesco Paneni
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Zurich, Switzerland Department of Cardiology, University Heart Center, Center for Molecular Cardiology, University Hospital and University of Zurich, Rämistrasse 100, CH-8091 Zurich, Switzerland Zurich Center of Integrative Human Physiology, University of Zurich, Zurich, Switzerland Cardiology Unit, Department of Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Katia Galan
- Division of Cardiology, Foundation for Medical Researches, University of Geneva, Geneva, Switzerland
| | - Graziano Pelli
- Division of Cardiology, Foundation for Medical Researches, University of Geneva, Geneva, Switzerland
| | - Nicolas Vuilleumier
- Division of Laboratory Medicine, Department of Genetics and Laboratory Medicine, Geneva University Hospitals, Switzerland Department of Human Protein Science, Geneva Faculty of Medicine, Geneva, Switzerland
| | - Alexandre Belin
- Department of Radiology, CIBM, Geneva University Hospital, Geneva, Switzerland
| | - Jean-Paul Vallée
- Department of Radiology, CIBM, Geneva University Hospital, Geneva, Switzerland
| | - Francois Mach
- Division of Cardiology, Foundation for Medical Researches, University of Geneva, Geneva, Switzerland
| | - Thomas F Lüscher
- Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Zurich, Switzerland Department of Cardiology, University Heart Center, Center for Molecular Cardiology, University Hospital and University of Zurich, Rämistrasse 100, CH-8091 Zurich, Switzerland Zurich Center of Integrative Human Physiology, University of Zurich, Zurich, Switzerland
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Sakulkhu U, Maurizi L, Mahmoudi M, Motazacker M, Vries M, Gramoun A, Ollivier Beuzelin MG, Vallée JP, Rezaee F, Hofmann H. Ex situ evaluation of the composition of protein corona of intravenously injected superparamagnetic nanoparticles in rats. Nanoscale 2014; 6:11439-11450. [PMID: 25154771 DOI: 10.1039/c4nr02793k] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
It is now well recognized that the surfaces of nanoparticles (NPs) are coated with biomolecules (e.g., proteins) in a biological medium. Although extensive reports have been published on the protein corona at the surface of NPs in vitro, there are very few on the in vivo protein corona. The main reason for having very poor information regarding the protein corona in vivo is that separation of NPs from the in vivo environment has not been possible by using available techniques. Knowledge of the in vivo protein corona could lead to better understanding and prediction of the fate of NPs in vivo. Here, by using the unique magnetic properties of superparamagnetic iron oxide NPs (SPIONs), NPs were extracted from rat sera after in vivo interaction with the rat's physiological system. More specifically, the in vivo protein coronas of polyvinyl-alcohol-coated SPIONs with various surface charges are defined. The compositions of the corona at the surface of various SPIONs and their effects on the biodistribution of SPIONs were examined and compared with the corona composition of particles incubated for the same time in rat serum.
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Affiliation(s)
- Usawadee Sakulkhu
- Laboratory of Powder Technology, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland.
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50
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Oldani G, Crowe LA, Orci LA, Slits F, Rubbia-Brandt L, de Vito C, Morel P, Mentha G, Berney T, Vallée JP, Lacotte S, Toso C. Pre-retrieval reperfusion decreases cancer recurrence after rat ischemic liver graft transplantation. J Hepatol 2014; 61:278-85. [PMID: 24713189 DOI: 10.1016/j.jhep.2014.03.036] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Revised: 02/28/2014] [Accepted: 03/27/2014] [Indexed: 01/14/2023]
Abstract
BACKGROUND & AIMS Liver transplantation from marginal donors is associated with ischemia/reperfusion (I/R) lesions, which may increase the risk of post-transplant hepatocellular carcinoma (HCC) recurrence. Graft reperfusion prior to retrieval (as for extracorporeal membrane oxygenation--ECMO) can prevent I/R lesions. The impact of I/R on the risk of cancer recurrence was assessed on a syngeneic Fischer-rat liver transplantation model. METHODS HCC cells were injected into the vena porta of all recipients at the end of an orthotopic liver transplantation (OLT). Control donors were standard heart-beating, ischemic ones (ISC), underwent 10 min or 30 min inflow liver clamping prior to retrieval, and ischemic/reperfused (ISC/R) donors underwent 2h liver reperfusion after the clamping. RESULTS I/R lesions were confirmed in the ISC group, with the presence of endothelial and hepatocyte injury, and increased liver function tests. These lesions were in part reversed by the 2h reperfusion in the ISC/R group. HCC growth was higher in the 10 min and 30 min ISC recipients (p = 0.018 and 0.004 vs. control, as assessed by MRI difference between weeks one and two), and was prevented in the ISC/Rs (p = 0.04 and 0.01 vs. ISC). These observations were associated with a stronger pro-inflammatory cytokine profile in the ISC recipients only, and the expression of hypoxia and HCC growth-enhancer genes, including Hmox1, Hif1a and Serpine1. CONCLUSIONS This experiment suggests that ischemia/reperfusion lesions lead to an increased risk of post-transplant HCC recurrence and growth. This observation can be reversed by graft reperfusion prior to retrieval.
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Affiliation(s)
- Graziano Oldani
- Divisions of Transplant and Abdominal Surgery, Department of Surgery, Geneva University Hospitals and Faculty of Medicine, University of Geneva, Geneva, Switzerland; Department of Surgery, University of Pavia, Italy
| | - Lindsey A Crowe
- Division of Radiology, Department of Medical Imaging, Geneva University Hospitals and Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Lorenzo A Orci
- Divisions of Transplant and Abdominal Surgery, Department of Surgery, Geneva University Hospitals and Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Florence Slits
- Divisions of Transplant and Abdominal Surgery, Department of Surgery, Geneva University Hospitals and Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Laura Rubbia-Brandt
- Division of Clinical Pathology, Geneva University Hospitals and Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Claudio de Vito
- Division of Clinical Pathology, Geneva University Hospitals and Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Philippe Morel
- Divisions of Transplant and Abdominal Surgery, Department of Surgery, Geneva University Hospitals and Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Gilles Mentha
- Divisions of Transplant and Abdominal Surgery, Department of Surgery, Geneva University Hospitals and Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Thierry Berney
- Divisions of Transplant and Abdominal Surgery, Department of Surgery, Geneva University Hospitals and Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Jean-Paul Vallée
- Division of Radiology, Department of Medical Imaging, Geneva University Hospitals and Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Stéphanie Lacotte
- Divisions of Transplant and Abdominal Surgery, Department of Surgery, Geneva University Hospitals and Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Christian Toso
- Divisions of Transplant and Abdominal Surgery, Department of Surgery, Geneva University Hospitals and Faculty of Medicine, University of Geneva, Geneva, Switzerland.
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