Publications by authors named "Paul Ardilouze"

7 Publications

  • Page 1 of 1

Efficacy of Chest CT for COVID-19 Pneumonia Diagnosis in France.

Radiology 2021 02 1;298(2):E81-E87. Epub 2020 Sep 1.

From the University Hospital Centre Poitiers, Radiology, 2 rue de la Milétrie, 86000 Poitiers, Vienne, France (G. Herpe.); Laboratoire de Mathématiques et Applications Université de Poitiers, DACTIM-MIS TEAM, Chasseneuil, Nouvelle Aquitaine, France (G. Herpe.); University Hospital of Rennes, Radiology, Rennes, Ille-et-Vilaine, France (M. Lederlin.); University of Rennes, Rennes, Ille-et-Vilaine, France (M. Lederlin.); Université de Poitiers Laboratoire de Mathématiques et Applications, DACTIM-MIS, Chasseneuil, Nouvelle Aquitaine, France (M.N.); University Hospital Centre Poitiers, DACTIM-MIS, Poitiers, France (M.N.); Nouvel Hôpital Civil, Radiology, Strasbourg, Alsace, France (M.O.); APHM, Radiology, Marseille, PACA, France (K.C.); AMU, Marseille, PACA, France (K.C.); Beaujon Hospital Department of Medical Imaging, Radiology, Clichy, France (J.G.); Beaujon University Hospitals Paris Nord Val de Seine, Radiology, Clichy, Hauts-de-Seine, France (V.V.); CHU Nîmes, Nîmes, Gard, France (C.A.F.); Hôpital Saint-Louis, Radiology, Paris, Île-de-France, France (C.D.M.M.); Université de Paris, INSERM U1149-Center for Research on Inflammation, Paris, Île-de-France, France (C.D.M.M.); Centre Hospitalier Universitaire de Nice Hôpital Pasteur, Radiology, Nice, Alpes Maritimes, France (V.F.); Centre Hospitalier Annecy Genevois, Radiology, Epagny Metz-Tessy, Auvergne-Rhône-Alpes, France (M. Ludwig.); CHU Nice, Radiology, Nice, PACA, France (L.M.); European Hospital Group Georges-Pompidou, Radiology, Paris, Île-de-France, France (I.F.); Université de la Méditérranée, Faculté de Médecine de Marseille, Centre de Résonance Magnétique Biologique et Médicale (CRMBM), UMR CNRS no. 6612, Marseille, BdR, France (A.R.R.J.); Centre Hospitalo Universitaire la Timone, Service de Radiologie Cardiovasculaire, Marseille, France (A.R.R.J.); Centre Hospitalier de la Côte Basque, Bayonne, Nouvelle Aquitaine, France (P.A.); CHRU de Nancy, Radiology, Nancy, Grand Est, France (I.P.); HIA Legouest, Service d'Imagerie Médicale, Metz, France (A.G.); CHU Nancy, Service D'imagerie Guilloz, Nancy, France (A.G.); Hôpital Saint-Joseph, Radiology, Marseille, PACA, France (O.B.); Clinique Emilie de Vialar, IMEV, Radiologie, Rhône, France (A.C.); CH Douai, NORD, Loffre, France (M.M.S.); University Hospital Centre Poitiers, Poitiers, Vienne, France (C.T.); CHRDS, Neuilly-sur-Seine, Neuilly-sur-Seine, France (G. Henry.);, Île de France, France (V.B.); Hôpital d'Instruction des Armées Begin, Radiology, Saint Mande, Île-de-France, France (T.L.T.); Hôpital d'Instruction des Armées Percy, Radiology, Clamart, Île-de-France, France (T.L.T.); CHU Limoges, Radiology, Limoges, Nouvelle Aquitaine, France (M.S.G.); CHU Dupuytren, Radiologie, Limoges, Haute-Vienne, France (P.G.); Military Teaching Hospital Clermont-Tonnerre, Radiology, Brest, Bretagne, France (M.G.); Hôpital Argenteuil, Argenteuil, Île-de-France, France (E.B.); Centre Hospitalier Pierre-le-Damany Lannion Trestel, Kergomar, Lannion, Bretagne, France (C.M.); Institut Bergonie, Bordeaux, Nouvelle Aquitaine, France (B.L.); CH Douai, Radiology, Douai, Nord, France (A.K.); Centre Hospitalier de Vienne Lucien Hussel, Medical Imaging, Vienne, Aura, France (H.K.); Hôpital d'Instruction des Armées Laveran, Radiology, Marseille, Bouches-du-Rhône, France (F.D.); CHU Tivoli, La Louvière, Wallonie, Belgium (B.D.); CHU Poitiers, Clinical Investigation Center CIC1402, Poitiers, Vienne, France (P.J.S.); CHU Poitiers, Radiology, Poitiers, Poitou-Charentes, France (R.G.); La Timone Hospital, Radiology, Marseille, BdR, France (J.M.B.); University Hospital Center of Nîmes, Radiology, Nîmes, Gard, France (J.P.B.); Université de Poitiers, Faculté de Médecine et de Pharmacie, Poitiers, France, France (J.P.T.); and CHU de Poitiers, Service de Radiologie, Poitiers, France, France (J.P.T.) .

Background The role and performance of chest CT in the diagnosis of the coronavirus disease 2019 (COVID-19) pandemic remains under active investigation. Purpose To evaluate the French national experience using chest CT for COVID-19, results of chest CT and reverse transcription polymerase chain reaction (RT-PCR) assays were compared together and with the final discharge diagnosis used as the reference standard. Materials and Methods A structured CT scan survey (NCT04339686) was sent to 26 hospital radiology departments in France between March 2, 2020, and April 24, 2020. These dates correspond to the peak of the national COVID-19 epidemic. Radiology departments were selected to reflect the estimated geographic prevalence heterogeneities of the epidemic. All symptomatic patients suspected of having COVID-19 pneumonia who underwent both initial chest CT and at least one RT-PCR test within 48 hours were included. The final discharge diagnosis, based on multiparametric items, was recorded. Data for each center were prospectively collected and gathered each week. Test efficacy was determined by using the Mann-Whitney test, Student test, χ test, and Pearson correlation coefficient. < .05 indicated a significant difference. Results Twenty-six of 26 hospital radiology departments responded to the survey, with 7500 patients entered; 2652 did not have RT-PCR test results or had unknown or excess delay between the RT-PCR test and CT. After exclusions, 4824 patients (mean age, 64 years ± 19 [standard deviation], 2669 male) were included. With final diagnosis as the reference, 2564 of the 4824 patients had COVID-19 (53%). Sensitivity, specificity, negative predictive value, and positive predictive value of chest CT in the diagnosis of COVID-19 were 2319 of 2564 (90%; 95% CI: 89, 91), 2056 of 2260 (91%; 95% CI: 91, 92), 2056 of 2300 (89%; 95% CI: 87, 90), and 2319 of 2524 (92%; 95% CI: 91, 93), respectively. There was no significant difference for chest CT efficacy among the 26 geographically separate sites, each with varying amounts of disease prevalence. Conclusion Use of chest CT for the initial diagnosis and triage of patients suspected of having coronavirus disease 2019 was successful. © RSNA, 2021
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http://dx.doi.org/10.1148/radiol.2020202568DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7465292PMC
February 2021

Real three-dimensional assessment of left atrial and left atrial appendage volumes by 64-slice spiral computed tomography in individuals with or without cardiovascular disease.

Int J Cardiol 2010 Apr 23;140(2):189-96. Epub 2008 Dec 23.

Department of Cardiology, Poitiers University Hospital, France.

Context: Left atrial (LA) volume is a prognosis factor of cardiovascular morbidity in patients with cardiovascular disease (CD). Recent developments of multislice computed tomography (MSCT) have made non invasive coronary angiography reliable for selected patients and new software facilitates truly volume measurements without geometrical assumptions.

Objective: To define, by using MSCT, LA and left atrial appendage (LAA) volumes in patients with or without CD.

Methods And Results: In the population of patients referred to our laboratory for a conventional MSCT coronary angiography, 40 individuals without CD (Normal group) and 80 patients with CD (CD group) were prospectively selected. The CD group was constituted from 4 subgroups of patients with either coronary artery disease (n=20), idiopathic dilated cardiomyopathy (n=20), left ventricular hypertrophy (n=20) or severe mitral regurgitation (MR group, n=20). LAA and LA volumes were measured on a commercially available workstation. LA maximal and minimal volumes were lower in Normal group than in CD group, as LA ejection fraction (54+/-10 versus 67+/-20 ml/m(2), p<0.0001; 31+/-8 versus 46+/-20 ml/m(2), p<0.0001; 43+/-8% versus 33+/- 14%, p<0.001). LAA volume was larger in MR group than in Normal group (15+/-7 ml versus 9+/-3 ml, p<0.0001).

Conclusion: This MSCT study provides normal values of LA and LAA volumes for patients who underwent MSCT coronary angiography and suggests that MSCT is helpful to assess the changes of LA volumes related to various CD.
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http://dx.doi.org/10.1016/j.ijcard.2008.11.055DOI Listing
April 2010

Aortic valvular endocarditis with mobile vegetations and intracoronary embolism: demonstration by cardiac multislice computed tomography.

Eur Heart J 2008 Aug 10;29(15):1888. Epub 2008 Feb 10.

Département Médico-Chirurgical de Cardiologie, CHU Poitiers, Hopital de la Milétrie, rue de la Milétrie, 86000 Poitiers, France.

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http://dx.doi.org/10.1093/eurheartj/ehn042DOI Listing
August 2008

A new method for measurement of left atrial volumes using 64-slice spiral computed tomography: comparison with two-dimensional echocardiographic techniques.

Int J Cardiol 2009 Jan 4;131(2):217-24. Epub 2008 Jan 4.

Département de Cardiologie, Centre Hospitalo-Universitaire de Poitiers, France.

Background: Left atrial (LA) volume, is related to cardiovascular morbidity. LA enlargement is usually assessed using trans-thoracic echocardiography (TTE). The association of modern multislice computed tomography (MSCT) imaging and new 3D reconstruction software, allows direct cardiac chamber volume measurement without geometrical assumptions. This study was designed to evaluate the maximal (LAmax) and minimal (LAmin) LA volumes during the cardiac cycle using MSCT and TTE approaches.

Methods: We screened 26 consecutive patients referred for coronary imaging using a 64-MSCT scanner and a TTE within 12 h. Contiguous multiphase images were generated from axial MSCT data and semi-automated 3D segmentation technique was applied to generate LA volumes. Using TTE, LA volumes and LA ejection fraction (LAEF) were obtained using five assumptions methods: cubing equation, diameter-length formula, area-length formula, ellipsoidal formula and biplane Simpson rule.

Results: Five patients were excluded for inadequate TTE visualization and one for ectopic beats during MSCT. The sample consisted in 20 patients (11 men, age: 56+/-14 years). Using MSCT, LA volumes indexed to body surface area were: LAmax=74+/-27 ml/m(2), LAmin=49+/-26 ml/m(2), with close correlations with TTE measurements and a significant underestimation by all TTE approaches. A close correlation was observed between LAEF using MSCT and TTE Simpson's method: 36+/-14% vs. 37+/-14%, r=0.99, p<0.0001.

Conclusion: Theses results suggest that the assessment of LA volumes and ejection fraction was reliable using 64-MSCT in patients referred for coronary computed tomography imaging.
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http://dx.doi.org/10.1016/j.ijcard.2007.10.020DOI Listing
January 2009

A rare case of left superior vena cava draining into left atrium demonstrated by MDCT.

Int J Cardiol 2009 Jan 10;131(2):e65-6. Epub 2007 Aug 10.

We describe a rare case of persistent left superior vena cava draining directly into the left atrium with no associated anomaly of the coronary sinus or the atrial septum, discovered by multidetector computed tomography.
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http://dx.doi.org/10.1016/j.ijcard.2007.05.104DOI Listing
January 2009

Prospective evaluation of the anatomy of the coronary venous system using multidetector row computed tomography.

Int J Cardiol 2008 May 9;126(2):204-8. Epub 2007 May 9.

Department of Cardiology, University Hospital of Poitiers, France.

Background: Multidetector row computed tomography (MDCT) is a developing technique mainly used to evaluate the coronary arteries, but less attention has been paid to the coronary venous system. However, with the dramatic technological advancement of percutaneous therapies for heart failure or mitral insufficiency, a better knowledge about the anatomy of the coronary venous system may be of great utility. We sought the efficacy of MDCT imaging to delineate the coronary venous system.

Methods: 16 row MDCT scans were performed in 50 consecutive patients (42 men, age 61+/-15 years, all in sinus rhythm). The inter-individual variability in terms of diameter, distance, angle of the main tributaries of the coronary venous system was reported.

Results: The coronary venous system was always visualized. A remnant Thebesian valve was observed in 18 patients, the diameter of the coronary sinus ostium was found 12.2+/-3.6 mm and 15.3+/-3.7 mm respectively in the antero-posterior and supero-inferior directions, the distance between the posterior vein of the left ventricle (PVLV) and the anterior interventricular vein (AIV) was found 108.6+/-15.2 mm with a significant correlation with the mitral annulus diameter (p<.002) and the left ventricular diameter (p<0.01). The left marginal vein (LMV) was more often tortuous when the angle between the LMV and the great cardiac vein was less than 60 degrees (p<0.01).

Conclusion: 16 row MDCT imaging can be used to investigate non-invasively the coronary venous anatomy and may serve as a useful tool before percutaneous therapies involving the coronary veins.
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http://dx.doi.org/10.1016/j.ijcard.2007.03.128DOI Listing
May 2008

Anomalous septal artery originating from the right coronary sinus and detection of the interarterial course using multislice computed tomography (MSCT).

Int J Cardiol 2007 Apr 4;116(3):410-2. Epub 2006 Aug 4.

Anomalies of the coronary arteries are uncommon but may produce life-threatening symptoms and myocardial ischemia. Multislice computed tomography (MSCT) has become a major technique for imaging the coronary arteries. We present a case of a patient with a septal and a circumflex arteries originating from the right coronary sinus and a duplicate left anterior descending artery. The interarterial course of the septal branch is clearly demonstrated with MSCT technique as the abnormal circumflex artery that coursed posterior to the aortic root.
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http://dx.doi.org/10.1016/j.ijcard.2006.03.083DOI Listing
April 2007
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