Jean-François Deux

University of Paris-Est, Centre, France

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Publications (61)197.92 Total impact

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    ABSTRACT: Aims: We evaluated the safety and feasibility of an intracardiac echocardiography probe through the oesophageal route (ICE-TEE) for the monitoring of left atrial appendage (LAA) closure to avoid general anaesthesia. Methods and results: The study included 16 consecutive patients (75±7 years) in atrial fibrillation with high embolism (CHADS-VASc=5±1.4) and bleeding risk (HAS-BLED=4±0.9) referred for LAA closure (Amplatzer Cardiac Plug [ACP]). Standard TEE was performed before device implantation for LAA analysis. During the procedure, ICE-TEE was used under local anaesthesia to determine LAA size and monitor ACP positioning. Maximum and minimum LAA diameter by standard TEE averaged 21±3 mm and 18±1 mm, respectively. Eccentricity index (1.1±0.2) increased with LAA diameter (r=0.73, p=0.001). Maximum LAA size (21±3 mm) obtained by ICE-TEE during the procedure closely correlated with standard TEE measurement (r=0.9, p<0.0001). LAA closure was successfully performed in 15 patients without complication (one failed despite testing three ACP). Implanted ACP size averaged 25±3 mm (range 22-30 mm) and correlated with the size predicted by ICE-TEE (r=0.89) and standard TEE (r=0.57). Procedure duration (62±27 min) correlated with LAA size by ICE-TEE (r=0.71, p=0.002) and eccentricity index (r=0.58, p=0.02). Conclusions: An ICE-TEE probe through the oesophageal route without general anaesthesia may be used for the monitoring of ACP device implantation.
    07/2014;
  • Circulation 06/2014; 129(24):2576-7. · 15.20 Impact Factor
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    ABSTRACT: To evaluate the feasibility of image fusion (IF) of preprocedural arterial-phase computed tomography with intraprocedural fluoroscopy for roadmapping in endovascular repair of complex aortic aneurysms, and to compare this approach versus current roadmapping methods (ie, two-dimensional [2D] and three-dimensional [3D] angiography). Thirty-seven consecutive patients with complex aortic aneurysms treated with endovascular techniques were retrospectively reviewed; these included aneurysms of digestive and/or renal arteries and pararenal and juxtarenal aortic aneurysms. All interventions were performed with the same angiographic system. According to the availability of different roadmapping software, patients were successively placed into three intraprocedural image guidance groups: (i) 2D angiography (n = 9), (ii) 3D rotational angiography (n = 14), and (iii) IF (n = 14). X-ray exposure (dose-area product [DAP]), injected contrast medium volume, and procedure time were recorded. Patient characteristics were similar among groups, with no statistically significant differences (P ≥ .05). There was no statistical difference in endograft deployment success between groups (2D angiography, eight of nine patients [89%]; 3D angiography and IF, 14 of 14 patients each [100%]). The IF group showed significant reduction (P < .0001) in injected contrast medium volume versus other groups (2D, 235 mL ± 145; 3D, 225 mL ± 119; IF, 65 mL ± 28). Mean DAP values showed no significant difference between groups (2D, 1,188 Gy·cm(2) ± 1,067; 3D, 984 Gy·cm(2) ± 581; IF, 655 Gy·cm(2) ± 457; P = .18); nor did procedure times (2D, 233 min ± 123; 3D, 181 min ± 53; IF, 189 min ± 60; P = .59). The use of IF-based roadmapping is a feasible technique for endovascular complex aneurysm repair associated with significant reduction of injected contrast agent volume and similar x-ray exposure and procedure time.
    Journal of vascular and interventional radiology: JVIR 09/2013; · 1.81 Impact Factor
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    ABSTRACT: Abstract Background: Familial amyloid polyneuropathy (FAP) mainly targets the peripheral nervous system and heart. Early noninvasive detection of cardiac impairment is critical for therapeutic management. Aim: To assess if amino-terminal pro-brain natriuretic peptide (NT-proBNP) or troponin T (cTnT) can predict echocardiographic left-ventricle (LV) impairment in FAP. Methods: Thirty-six asymptomatic carriers and patients with FAP had echocardiographic measurement of left-ventricular (LV) systolic function, hypertrophy (LVH) and estimation of filling pressure (FP). Results: Overall, median age, NT-proBNP, and LV ejection fraction were, respectively, 59 years (41-74), 323 pg/ml (58-1960), and 60% (51-66). Twelve patients had increased cTnT. Prevalence of ATTR gene mutations was 53% for Val30Met. Four individuals were asymptomatic, 6 patients had isolated neurological clinical signs, and 26 had echo-LV abnormalities. The ROC curve identified NT-proBNP patients with echo-LV abnormalities (area: 0.92; (0.83-0.99), p = 0.001) at a threshold >82 pg/ml with a sensitivity of 92%, and a specificity of 90%. Increased in NT-proBNP occurred in patients with SD and/or LVH with or without increase in FP. Elevated cTnT (>0.01ng/ml) was only observed in patients with LVH and systolic dysfunction, with or without FP. Conclusion: In FAP, NT-proBNP was associated with cardiac impairment suggesting that NT-proBNP could be used in carriers or in FAP patients with only neurologic symptoms for identifying the appropriate time to start cardiac echocardiographic assessment and follow-up. cTnT identified patients with severe cardiac disease.
    Amyloid: the international journal of experimental and clinical investigation: the official journal of the International Society of Amyloidosis 08/2013; · 2.12 Impact Factor
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    ABSTRACT: The lung computed tomography (CT) features of acute chest syndrome (ACS) in sickle cell disease patients is not well described, and the diagnostic performance of bedside chest radiograph (CR) has not been tested. Our objectives were to describe CT features of ACS and evaluate the reproducibility and diagnostic performance of bedside CR. We screened 127 consecutive patients during 166 ACS episodes and 145 CT scans (in 118 consecutive patients) were included in the study. Among the 145 CT scans, 139 (96%) exhibited a new pulmonary opacity and 84 (58%) exhibited at least one complete lung segment consolidation. Consolidations were predominant as compared with ground-glass opacities and atelectasis. Lung parenchyma was increasingly consolidated from apex to base; the right and left inferior lobes were almost always involved in patients with a new complete lung segment consolidation on CT scan (98% and 95% of cases, respectively). Patients with a new complete lung segment consolidation on CT scan had a more severe presentation and course as compared with others. The sensitivity of bedside CR for the diagnosis of ACS using CT as a reference was good (>85%), whereas the specificity was weak (<60%). ACS more frequently presented on CT as a consolidation pattern, predominating in lung bases. The reproducibility and diagnostic capacity of bedside CR were far from perfect. These findings may help improve the bedside imaging diagnosis of ACS.
    Thorax 08/2013; · 8.38 Impact Factor
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    ABSTRACT: PURPOSE: To determine if intra-voxel incoherent motion diffusion-weighted imaging (IVIM-DWI) parameters, including free molecular-based (D) and perfusion-related (D*, f) diffusion parameters, correlate with the degree of tumor necrosis and viable tumor in colo-rectal cancer (CRC) metastasis. MATERIALS AND METHODS: Fifteen patients referred for resection of liver metastases from CRC were retrospectively included in this Institutional Review Board approved study. An IVIM-DWI sequence was performed on a 1.5 Tesla MR imaging system, with 10 b factors (0, 10, 20, 30, 50, 80, 100, 200, 400 and 800 s/mm(2) ). Mean D, D*, f and apparent diffusion coefficient (ADC) values were determined in metastases with a longest diameter above 10 mm. Correlations between the diffusion parameters and the degree of liver tumor necrosis and viable tissue were determined (Spearman). RESULTS: Correlation between diffusion parameters and histopathological findings was performed in 35 hepatic metastases with a diameter of more than 10 mm (mean size of 17.9 mm; range, 1-68 mm). Both D (r = 0.36; P = 0.035) and ADC (r = 0.4; P = 0.02) correlated with the degree of tumor necrosis but not with viable tumor. CONCLUSION: ADC variation observed in CRC metastases following systemic chemotherapy reflects a specific increase in free-molecular diffusion (D), in itself correlated to the degree of metastasis necrosis. J. Magn. Reson. Imaging 2013;. © 2013 Wiley Periodicals, Inc.
    Journal of Magnetic Resonance Imaging 05/2013; · 2.57 Impact Factor
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    ABSTRACT: Purpose:To evaluate the performance of a low-b-value diffusion-weighted (DW) echo-planar (EP) imaging sequence for detection of regional and diffuse myocardial edema in patients with acute myocarditis.Materials and Methods:This study was approved by the institutional review board, and informed consent was obtained from all subjects. Thirteen patients with acute myocarditis and a control group of seven healthy adults underwent low-b-value (50 sec/mm(2)) DW cardiac magnetic resonance imaging. DW EP images were acquired in the four-chamber long-axis section and analyzed qualitatively and quantitatively. Short inversion time inversion-recovery (STIR) T2-weighted and late gadolinium chelate enhancement images were acquired in the same plane and analyzed. Late gadolinium chelate enhancement was used as the reference standard. Statistical analyses were performed with a receiver operating characteristic analysis and a nonparametric Wilcoxon test.Results:Qualitative analysis showed myocardial high-signal-intensity areas in 100% (13 of 13) of patients on DW EP, 38% (five of 13) on STIR T2-weighted, and 100% (13 of 13) on late gadolinium chelate enhancement images. In eight patients (61%), high-signal-intensity areas were exhibited on DW EP images that were not detected on STIR T2-weighted images, but were colocalized with lesions detected on late gadolinium chelate enhancement images. Similar results were obtained by using an automatic analysis with dedicated cardiac software. The global myocardial signal intensity ratio was significantly higher (P = .03) in patients than in controls for DW EP (2.2 ± 0.4 [standard deviation] vs 1.1 ± 0.4, respectively), and exhibited no significant difference (P = .14) for STIR T2-weighted (1.7 ± 0.6 vs 1.4 ± 0.1, respectively) images. Sensitivity and diagnostic accuracy were higher for DW EP images than for STIR T2-weighted images (92% vs 54%, and 95% vs 70%, respectively), and specificity was the same (100% vs 100%).Conclusion:A low-b-value DW EP imaging sequence is a feasible alternative to the standard STIR T2-weighted sequence for detection of regional and global myocardium edema in patients with acute myocarditis.© RSNA, 2013Supplemental material: http://radiology.rsna.org/lookup/suppl/doi:10.1148/radiol.13121811/-/DC1.
    Radiology 05/2013; · 6.34 Impact Factor
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    ABSTRACT: Senile systemic amyloidosis (SSA) is characterized by infiltration of amyloid transthyretin fibrils in the myocardium. SSA occurs mainly (but not always) in elderly men. SSA leads to hypertrophic and/or restrictive cardiomyopathy complicated by conduction disturbances, atrial arrhythmia and systemic embolization (stroke…). That is why SSA needs a special care and to be diagnosed. Cardiac SSA diagnosis needs to exclude two other forms of cardiac amyloidosis: AL amyloidosis (light chain) and hereditary transthyretin amyloidosis (genetic testing). Scintigraphic 99mTc-DPD heart retention is observed in cardiac amyloidosis. DPD heart retention is more frequent in cardiac transthyretin amyloidosis than in cardiac AL amyloidosis. Specific treatments of cardiac TTR amyloidosis are in development.
    La Presse Médicale 05/2013; · 0.87 Impact Factor
  • Bo Xiang, Jean-Francois Deux, Alain Rahmouni, Nikos Paragios
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    ABSTRACT: This paper proposes a novel framework for image segmentation through a unified model-based and pixel-driven integrated graphical model. Prior knowledge is expressed through the deformation of a discrete model that consists of decomposing the shape of interest into a set of higher order cliques (triplets). Such decomposition allows the introduction of region-driven image statistics as well as pose-invariant (i.e. translation, rotation and scale) constraints whose accumulation introduces global deformation constraints on the model. Regional triangles are associated with pixels labeling which aims to create consistency between the model and the image space. The proposed formulation is pose-invariant, can integrate regional statistics in a natural and efficient manner while being able to produce solutions unobserved during training. The challenging problem of tagged cardiac MR image segmentation is used to demonstrate the performance potentials of the method.
    Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention. 01/2013; 16(Pt 3):267-74.
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    ABSTRACT: Computed tomographic coronary angiography (CTCA) has been proposed as a noninvasive test for significant coronary artery disease (CAD), but only limited data are available from prospective multicenter trials. The goal of this study was to establish the diagnostic accuracy of CTCA compared to coronary angiography (CA) in a large population of symptomatic patients with clinical indications for coronary imaging. This national, multicenter study was designed to prospectively evaluate stable patients able to undergo CTCA followed by conventional CA. Data from CTCA and CA were analyzed in a blinded fashion at central core laboratories. The main outcome was the evaluation of patient-, vessel-, and segment-based diagnostic performance of CTCA to detect or rule out significant CAD (≥50% luminal diameter reduction). Of 757 patients enrolled, 746 (mean age 61 ± 12 years, 71% men) were analyzed. They underwent CTCA followed by CA 1.7 ± 0.8 days later using a 64-detector scanner. The prevalence of significant CAD in native coronary vessels by CA was 54%. The rate of nonassessable segments by CTCA was 6%. In a patient-based analysis, sensitivity, specificity, positive and negative predictive values, and positive and negative likelihood ratios of CTCA were 91%, 50%, 68%, 83%, 1.82, and 0.18, respectively. The strongest predictors of false-negative results on CTCA were high estimated pretest probability of CAD (odds ratio [OR] 1.97, p <0.001), male gender (OR 1.5, p <0.002), diabetes (OR 1.5, p <0.0001), and age (OR 1.2, p <0.0001). In conclusion, in this large multicenter study, CTCA identified significant CAD with high sensitivity. However, in routine clinical practice, each patient should be individually evaluated, and the pretest probability of obstructive CAD should be taken into account when deciding which method, CTCA or CA, to use to diagnose its presence and severity.
    The American journal of cardiology 12/2012; · 3.58 Impact Factor
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    ABSTRACT: OBJECTIVE: To identify clinical and electrical factors predicting delayed high degree atrio-ventricular block (AVB) after transcatheter aortic valve implantation (TAVI). BACKGROUND: TAVI is a new technique for treating severe aortic valve stenosis in patients at high surgical risk but can be followed by high grade AVB requiring permanent pacing. METHODS AND RESULTS: The study included 79 patients (82±17 years, Euroscore=23±10 %) free of permanent pacing need before and immediately after TAVI procedure. Delayed high degree AVB was defined by type 2 or 3 AVB diagnosed at least 24 hours after the index procedure. Permanent pace maker implantation was performed for all these patients. We compared clinical and electrical variables before and after TAVI in patients with delayed AVB or not. TAVI was performed successfully in all patients. The 21 (26%) patients who exhibited delayed high grade AVB had significantly deeper prosthesis implantation (12±4 mm vs. 9±5 mm, P=0.03) and wider post-TAVI QRS duration (155±17 ms vs. 131±25 ms, P=0.0004), with no difference in baseline QRS duration. Post-TAVI QRS duration was the only independent predictor of post-TAVI permanent for delayed high degree AVB (P=0.02). After a mean follow-up of 10±8 months, all 21 patients with post-TAVI QRS ≤128 ms were free of high-grade AVB, while 21/55 (38%) patients with post-TAVI QRS >128 ms had permanent pacing (P=0.0016). CONCLUSION: Delayed ( 24 hours after the procedure) high-grade AVB necessitating permanent pacing is common after TAVI. QRS duration measured immediately after TAVI was the best independent predictor of permanent pacing in this population. Patients with QRS ≤128 ms immediately after TAVI had no risk of requiring permanent pacing. © 2012 Wiley Periodicals, Inc.
    Catheterization and Cardiovascular Interventions 09/2012; · 2.51 Impact Factor
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    ABSTRACT: Understanding the levator ani complex architecture is of major clinical relevance. The aim of this study was to determine the feasibility of magnetic resonance (MR) fiber tractography with diffusion tensor imaging (DTI) as a tool for the three-dimensional (3D) representation of normal subdivisions of the levator ani. Ten young nulliparous female volunteers underwent DTI at 1.5 T MR imaging. Diffusion-weighted axial sequence of the pelvic floor was performed with additional T2-weighted multiplanar sequences for anatomical reference. Fiber tractography for visualization of each Terminologia Anatomica-listed major levator ani subdivision was performed. Numeric muscular fibers extracted after tractography were judged as accurate when localized within the boundaries of the muscle, and inaccurate when projecting out of the boundaries of the muscle. From the fiber tracking of each subdivision the number of numeric fibers (inaccurate and accurate) and a score (from 3 to 0) of the adequacy of the 3D representation were calculated. All but two volunteers completed the protocol. The mean number of accurate fibers was 17 ± 2 for the pubovisceralis, 14 ± 6 for the puborectalis and 1 ± 1 for the iliococcygeus. The quality of the 3D representation was judged as good (score = 2) for the pubovisceralis and puborectalis, and inaccurate (score = 0) for the iliococcygeus. Our study is the first step to a 3D visualization of the three major levator ani subdivisions, which could help to better understand their in vivo functional anatomy.
    Journal of Anatomy 07/2012; 221(3):221-8. · 2.36 Impact Factor
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    ABSTRACT: OBJECTIVE: The aim of this study was to test a new automated hepatic volumetry technique by comparing the accuracies and postprocessing times of manual and automated liver volume segmentation methods in a patient population undergoing orthotopic liver transplantation so that liver volume could be determined on pathology as the standard of reference. CONCLUSION: Both manual and automated multiphase MDCT-based volume measurements were strongly correlated to liver volume (Pearson correlation coefficient, r = 0.87 [p < 0.0001] and 0.90 [p < 0.0001], respectively). Automated multiphase segmentation was significantly more rapid than manual segmentation (mean time, 16 ± 5 [SD] and 86 ± 3 seconds, respectively; p = 0.01). Overall, automated liver volumetry based on multiphase CT acquisitions is feasible and more rapid than manual segmentation.
    American Journal of Roentgenology 06/2012; 198(6):W568-74. · 2.90 Impact Factor
  • Matteo Pozzi, Jean-François Deux, Matthias Kirsch
    International journal of cardiology 05/2012; · 7.08 Impact Factor
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    ABSTRACT: This paper proposes a novel pose-invariant segmentation approach for left ventricle in 3D CT images. The proposed formulation is modular with respect to the image support (i.e. landmarks, edges and regional statistics). The prior is represented as a third-order Markov Random Field (MRF) where triplets of points result to a low-rank statistical prior while inheriting invariance to global transformations. The ventricle surface is determined through triangulation where image discontinuities can be easily evaluated and the Divergence theorem provides an exact calculation of regional statistics acting on the image or a derived feature space. Promising results using boosting along with the learned prior demonstrate the potential of our method.
    Proceedings / IEEE International Symposium on Biomedical Imaging: from nano to macro. IEEE International Symposium on Biomedical Imaging 01/2012;
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    ABSTRACT: MRI has become the primary tool for assessment of myocardial inflammation in patients with suspected acute myocarditis. Optimal diagnostic performance is achieved with late gadolinium-enhanced sequences, but cine balanced steady-state free precession (SSFP) MRI sequences are routinely used to evaluate cardiac function. Our aim was to prospectively assess the diagnostic value of unenhanced and contrast-enhanced cine SSFP MRI sequences in comparison with late gadolinium-enhanced sequences for imaging of patients with strong evidence of acute myocarditis. Eighteen patients with strong evidence of acute myocarditis underwent 1.5-T cardiac MRI. Unenhanced and contrast-enhanced cine SSFP images and late gadolinium-enhanced images were obtained. The images were analyzed both qualitatively and quantitatively. Data were analyzed with analysis of variance and the Bonferroni test or paired Student t test. Areas of high signal intensity were detected in 28% (5/18), 94% (17/18), and 89% (16/18) of patients on unenhanced cine, contrast-enhanced cine, and late gadolinium-enhanced images. In one patient, contrast-enhanced cine images revealed subepicardial areas of high signal intensity that were not visible on late gadolinium-enhanced images. The location and transmural nature of involved segments matched on contrast-enhanced cine and late gadolinium-enhanced images (both, r = 0.91, p < 0.0001). The contrast-to-noise ratio was significantly higher on contrast-enhanced cine images than on late gadolinium-enhanced images (p < 0.05). Contrast-enhanced cine MRI is a valuable tool for detection of lesions of acute myocarditis and should be recommended for routine clinical MRI.
    American Journal of Roentgenology 11/2011; 197(5):1081-7. · 2.90 Impact Factor
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    ABSTRACT: The pathophysiology of acute chest syndrome (ACS) in patients with sickle cell disease is complex, and pulmonary artery thrombosis (PT) may contribute to this complication. To evaluate the prevalence of PT during ACS using multidetector computed tomography (MDCT). We screened 125 consecutive patients during 144 ACS episodes. One hundred twenty-one MDCTs (in 103 consecutive patients) were included in the study. Twenty MDCTs were positive for PT, determining a prevalence of 17% (95% confidence interval, 10-23%). Revised Geneva clinical probability score was similar between patients with PT and those without. D-dimer testing was very often positive (95%) during ACS. A precipitating factor for ACS was less frequently found in patients with PT as compared with those without. Patients with PT exhibited significantly higher platelet counts (517 [273-729] vs. 307 [228-412] 10(9)/L, P < 0.01) and lower bilirubin (28 [19-43] vs. 44 [31-71] μmol/L, P < 0.01) levels at the onset of ACS as compared with others. In addition, patients with PT had a higher platelet count peak (537 [345-785] vs. 417 [330-555] 10(9)/L, P = 0.048) and smaller bilirubin peak (36 [18-51] vs. 46 [32-83] μmol/L, P = 0.048)and lactate dehydrogenase peak (357 [320-704] vs. 604 [442-788] IU/L, P = 0.01) during hospital stay as compared with others. PT is not a rare event in the context of ACS and seems more likely in patients with higher platelet counts and lower hemolytic rate during ACS. Patients with sickle cell disease presenting with respiratory symptoms suggestive of ACS may benefit from evaluation for PT.
    American Journal of Respiratory and Critical Care Medicine 08/2011; 184(9):1022-9. · 11.04 Impact Factor
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    ABSTRACT: BACKGROUND: To compare magnetic resonance (MR) imaging and multidetector computed tomography (MDCT) for the assessment of myocardial infarction (MI) after alcohol septal ablation (ASA). METHODS: Ten patients (mean age, 60 years±16) were examined with both MDCT and 1.5-T MR imaging performed 10 minutes after injection, within 3 days after ASA. Half of them had a temporary pacemaker (PM) during MDCT examination. Global image quality (IQ) and localization of MI were noticed on both MDCT and MR images. Volumes of MI, contrast-to-noise ratios (CNR) and signal-to-noise ratios (SNR) were also calculated. ASA effectiveness was evaluated by echocardiography immediately and 3 months after procedure. RESULTS: Global IQ was considered adequate for both procedures. In 8 patients, MI reached the basal part of the septum on both MDCT and MR images. The 2 remaining patients exhibited sparing of the basal septum on MDCT and MR images. Volumes of MI were within the same range with the 2 techniques (MDCT: 22.1±8.8 mL; MR imaging: 23.8±9.4 mL) and correlated well each other (R(2)=0.85, p<0.002). The 2 patients with sparing of the basal interventricular septum had persistent gradient on echocardiography 3 months after ASA, suggesting failure of the procedure. The volumes of MI didn't correlate with the reduction of pressure gradient on echocardiography 3 months after ASA (R(2)=0.02, p<0.05). CONCLUSIONS: Evaluation of post ASA MI is feasible with MDCT by comparison with MR imaging. MDCT might serve as an alternative imaging method in case of PM implantation.
    International journal of cardiology 07/2011; · 7.08 Impact Factor
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    ABSTRACT: Diffusion-Weighted-Imaging (DWI) assesses proton motion on a cellular scale. Owing to recent instrumentation developments, diffusion sequences are now routinely used for liver imaging. This review will go through the physical principles that underlie this technique, and then highlight up-to-date liver applications including quantification of liver fibrosis, focal lesions detection and characterization, and therapy response monitoring.
    Gastroentérologie Clinique et Biologique 06/2011; 35(8-9):539-48. · 0.80 Impact Factor
  • EuroIntervention: journal of EuroPCR in collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology 06/2011; 7(2):278-84. · 3.17 Impact Factor

Publication Stats

392 Citations
197.92 Total Impact Points

Institutions

  • 2012–2013
    • University of Paris-Est
      Centre, France
    • Université René Descartes - Paris 5
      Lutetia Parisorum, Île-de-France, France
  • 2005–2012
    • Hôpital Henri Mondor (Hôpitaux Universitaires Henri Mondor)
      • Service d’Imagerie Médicale
      Créteil, Île-de-France, France
    • Pierre and Marie Curie University - Paris 6
      Lutetia Parisorum, Île-de-France, France
  • 2011
    • French National Centre for Scientific Research
      Lutetia Parisorum, Île-de-France, France
  • 2009–2011
    • Assistance Publique – Hôpitaux de Paris
      • Department of Radiology
      Paris, Ile-de-France, France
    • Unité Inserm U1077
      Caen, Lower Normandy, France
  • 2008–2010
    • Ecole Centrale Paris
      • Laboratory of Applied Mathematics and Systems (MAS) - EA 4037
      Paris, Ile-de-France, France
    • Université Paris 13 Nord
      Île-de-France, France