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1. Left Ventricular Shape and Motion Reconstruction Through a Healthy Model for Characterizing Remodeling After Infarction

Author

De Craene, Mathieu, Piro, Paolo, Duchateau, Nicolas, Allain, Pascal, Saloux, Eric, Hutchison, David, Editorial Board Member, Kanade, Takeo, Editorial Board Member, Kittler, Josef, Editorial Board Member, Kleinberg, Jon M., Editorial Board Member, Mattern, Friedemann, Editorial Board Member, Mitchell, John C., Editorial Board Member, Naor, Moni, Editorial Board Member, Pandu Rangan, C., Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Terzopoulos, Demetri, Editorial Board Member, Tygar, Doug, Editorial Board Member, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Coudière, Yves, editor, Ozenne, Valéry, editor, Vigmond, Edward, editor, and Zemzemi, Nejib, editor

Published
2019
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2. One Mesh to Rule Them All: Registration-Based Personalized Cardiac Flow Simulations

Author

This, Alexandre, Boilevin-Kayl, Ludovic, Morales, Hernán G., Bonnefous, Odile, Allain, Pascal, Fernández, Miguel A., Gerbeau, Jean-Frédéric, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Pop, Mihaela, editor, and Wright, Graham A, editor

Published
2017
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5. Motion Estimation in 3D Echocardiography Using Smooth Field Registration

Author

Somphone, Oudom, Dufour, Cécile, Mory, Benoît, Hilpert, Loïc, Makram-Ebeid, Sherif, Villain, Nicolas, De Craene, Mathieu, Allain, Pascal, Saloux, Eric, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Camara, Oscar, editor, Mansi, Tommaso, editor, Pop, Mihaela, editor, Rhode, Kawal, editor, Sermesant, Maxime, editor, and Young, Alistair, editor

Published
2013
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6. Computational and Physical Phantom Setups for the Second Cardiac Motion Analysis Challenge (cMAC2)

Author

De Craene, Mathieu, Allain, Pascal, Gao, Hang, Prakosa, Adityo, Marchesseau, Stephanie, Somphone, Oudom, Hilpert, Loic, Manrique, Alain, Delingette, Hervé, Makram-Ebeid, Sherif, Villain, Nicolas, D’hooge, Jan, Sermesant, Maxime, Saloux, Eric, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Camara, Oscar, editor, Mansi, Tommaso, editor, Pop, Mihaela, editor, Rhode, Kawal, editor, Sermesant, Maxime, editor, and Young, Alistair, editor

Published
2013
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7. Synthetic Echocardiographic Image Sequences for Cardiac Inverse Electro-Kinematic Learning

Author

Prakosa, Adityo, Sermesant, Maxime, Delingette, Hervé, Saloux, Eric, Allain, Pascal, Cathier, Pascal, Etyngier, Patrick, Villain, Nicolas, Ayache, Nicholas, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Fichtinger, Gabor, editor, Martel, Anne, editor, and Peters, Terry, editor

Published
2011
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8. Non-invasive Activation Times Estimation Using 3D Echocardiography

Author

Prakosa, Adityo, Sermesant, Maxime, Delingette, Hervé, Saloux, Eric, Allain, Pascal, Cathier, Pascal, Etyngier, Patrick, Villain, Nicolas, Ayache, Nicholas, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Camara, Oscar, editor, Pop, Mihaela, editor, Rhode, Kawal, editor, Sermesant, Maxime, editor, Smith, Nic, editor, and Young, Alistair, editor

Published
2010
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10. Tracking of LV Endocardial Surface on Real-Time Three-Dimensional Ultrasound with Optical Flow

Author

Duan, Qi, Angelini, Elsa D., Herz, Susan L., Gerard, Olivier, Allain, Pascal, Ingrassia, Christopher M., Costa, Kevin D., Holmes, Jeffrey W., Homma, Shunichi, Laine, Andrew F., Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Frangi, Alejandro F., editor, Radeva, Petia I., editor, Santos, Andres, editor, and Hernandez, Monica, editor

Published
2005
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11. Deep Learning vs manual techniques for assessing left ventricular ejection fraction in 2D echocardiography: validation against CMR

Author

Saloux, Eric, primary, Popoff, Alexandre, additional, Langet, Hélène, additional, Piro, Paolo, additional, Ropert, Camille, additional, Gauriau, Romane, additional, Stettler, Romain, additional, Amzulescu, Mihaela Silvia, additional, Pizaine, Guillaume, additional, Allain, Pascal, additional, Bernard, Olivier, additional, Hodzic, Amir, additional, Manrique, Alain, additional, Craene, Mathieu De, additional, and Gerber, Bernhard L., additional

Published
2022
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12. Head-to-Head Comparison of Global and Regional Two-Dimensional Speckle Tracking Strain Versus Cardiac Magnetic Resonance Tagging in a Multicenter Validation Study

Author

Amzulescu, Mihaela Silvia, Langet, Hélène, Saloux, Eric, Manrique, Alain, Boileau, Laurianne, Slimani, Alisson, Allain, Pascal, Roy, Clotilde, de Meester, Christophe, Pasquet, Agnès, De Craene, Mathieu, Vancraeynest, David, Pouleur, Anne-Catherine, Vanoverschelde, Jean-Louis J., and Gerber, Bernhard L.

Published
2017
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13. Numérique, pour une politique industrielle | La 5G dans les chaines de valeur des données – Un défi technologique et industriel devant nous

Author

Allain, Pascal, Auphan, Raphaël, Bolignano, Dominique, Bril, Antoine, Calvez, Philippe, Hardouin, Eric, Jeon, Doh-Shin, Mercier, Eric, Mollo, Luca, Piot-Lepetit, Isabelle, Sartori, Michele, Viasnoff-Schwoob, Emilie, Vizinho-Coutry, Ascension, Philips (siège social), Cosmian, Provenrun, Institut de Recherches Internationales Servier (IRIS), Institut de Recherches Internationales Servier, ENGIE, Orange Labs, Toulouse School of Economics (TSE), Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-École des hautes études en sciences sociales (EHESS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Pfizer, Montpellier Interdisciplinary center on Sustainable Agri-food systems (Social and nutritional sciences) (UMR MoISA), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), MathWorks, ANRT, Toulouse School of Economics (TSE-R), Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-École des hautes études en sciences sociales (EHESS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro - Montpellier SupAgro, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), and Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)

Subjects
Numérique, Appropriation techn, Nouvelle technologie, Chaine de valeur, Politique industrielle, [INFO.INFO-ET]Computer Science [cs]/Emerging Technologies [cs.ET], [SHS.ECO]Humanities and Social Sciences/Economics and Finance
Abstract

Si l’essentiel du défi technologique et industriel reste à venir, la 5G constitue une voie d’accès privilégiée à la plateformisation numérique pour les entreprises industrielles. Sans décisions politiques urgentes, fondées sur une compréhension des enjeux techniques, la 5G renforcera le pouvoir de marché et la supériorité technologique des hyperscalers déjà dominants au détriment des entreprises françaises et européennes du même domaine. Nous exposons l’analyse technoéconomique qui permet d’aboutir à ce constat, nous interrogeons les modalités de diffusion de la 5G dans les chaînes de valeur des données, et pointons des pistes d’orientation aussi bien politiques que stratégiques.

Published
2021

16. Computational and Physical Phantom Setups for the Second Cardiac Motion Analysis Challenge (cMAC2)

Author

De Craene, Mathieu, primary, Allain, Pascal, additional, Gao, Hang, additional, Prakosa, Adityo, additional, Marchesseau, Stephanie, additional, Somphone, Oudom, additional, Hilpert, Loic, additional, Manrique, Alain, additional, Delingette, Hervé, additional, Makram-Ebeid, Sherif, additional, Villain, Nicolas, additional, D’hooge, Jan, additional, Sermesant, Maxime, additional, and Saloux, Eric, additional

Published
2013
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22. Fully automatic identification of AC and PC landmarks on brain MRI using scene analysis

Author

Verard, Laurent, Allain, Pascal, Travere, Jean Marcel, Baron, Jean Claude, and Bloyet, Daniel

Subjects
Magnetic resonance imaging -- Methods, Anterior commissure, Brain, Brain mapping -- Methods, Business, Electronics, Electronics and electrical industries, Health care industry
Abstract

We describe a method for identification of brain structures from MRI data sets. The bulk of the paper concerns an automatic system for finding the anterior and posterior commissures [(AC) and (PC)] in the midsagittal plane. These landmarks are key for the definition of the Talairach space, commonly used in stereotactic neurosurgery, in the definition of common coordinate systems for the pooling of functional positron emission tomography (PET) images and for neuroanatomy studies. The process works according to a step-by-step procedure: it first analyzes the skull limits. A grey-level histogram is then calculated and allows an automated selection of thresholds. Then, the interhemispheric plane is detected. Following an advanced scene analysis in the midsagittal plane for anatomical structures, the AC and the PC are identified. Experimentally, with a set of 200 patients, the process never failed. Its performances and limits are comparable to that of neuroanatomy experts. Those results are due to a high degree of robustness at each step of the program. Index Terms - Brain MRI, scene analysis, stereotactic neuroanatomy, Talairach system.

Published
1997

23. Improvements of Myocardial Deformation Assessment by Three-Dimensional Speckle-Tracking versus Two-Dimensional Speckle-Tracking Revealed by Cardiac Magnetic Resonance Tagging.

Author

UCL - SSS/IREC/CARD - Pôle de recherche cardiovasculaire, UCL - (SLuc) Service de pathologie cardiovasculaire, Amzulescu, Mihaela Silvia, Langet, Hélène, Saloux, Eric, Manrique, Alain, Slimani, Alisson, Allain, Pascal, Roy, Clothilde, de Meester de Ravenstein, Christophe, Pasquet, Agnes, Somphone, Oudom, De Craene, Mathieu, Vancraeynest, David, Pouleur, Anne-Catherine, Vanoverschelde, Jean-Louis, Gerber, Bernhard, UCL - SSS/IREC/CARD - Pôle de recherche cardiovasculaire, UCL - (SLuc) Service de pathologie cardiovasculaire, Amzulescu, Mihaela Silvia, Langet, Hélène, Saloux, Eric, Manrique, Alain, Slimani, Alisson, Allain, Pascal, Roy, Clothilde, de Meester de Ravenstein, Christophe, Pasquet, Agnes, Somphone, Oudom, De Craene, Mathieu, Vancraeynest, David, Pouleur, Anne-Catherine, Vanoverschelde, Jean-Louis, and Gerber, Bernhard

Abstract

BACKGROUND: In prior work, the authors demonstrated that two-dimensional speckle-tracking (2DST) correlated well but systematically overestimated global longitudinal strain (LS) and circumferential strain (CS) compared with two-dimensional cardiac magnetic resonance tagging (2DTagg) and had poor agreement on a segmental basis. Because three-dimensional speckle-tracking (3DST) has recently emerged as a new, more comprehensive evaluation of myocardial deformation, this study was undertaken to evaluate whether it would compare more favorably with 2DTagg than 2DST. METHODS: In a prospective two-center trial, 119 subjects (29 healthy volunteers, 63 patients with left ventricular dysfunction, and 27 patients with left ventricular hypertrophy) underwent 2DST, 3DST, and 2DTagg. Global, regional (basal, mid, and apical), and segmental (18 and 16 segments per patient) LS and CS by 2DST and 3DST were compared with 2DTagg using intraclass correlation coefficients (ICCs) and Bland-Altman analysis. Test-retest reproducibility of 3DST and 2DST was compared in 48 other patients. RESULTS: Both global LS and CS by 3DST agreed better with 2DTagg (ICC = 0.89 and ICC = 0.83, P < .001 for both; bias = 0.5 ± 2.3% and 0.2 ± 3%) than 2DST (ICC = 0.65 and ICC = 0.55, P < .001 for both; bias = -5.5 ± 2.5% and -7 ± 5.3%). Unlike 2DST, 3DST did not overestimate deformation at the regional and particularly the apical levels and at the segmental level had lower bias (LS, 0.8 ± 2.8% vs -5.3 ± 2.4%; CS, -0.01 ± 2.8% vs -7 ± 2.8%, respectively) but similar agreement with 2DST (LS: ICC = 0.58 ± 0.16 vs 0.56 ± 0.12; CS: ICC = 0.58 ± 0.12 vs 0.51 ± 0.1) with 2DTagg. Finally, 3DST had similar global LS, but better global CS test-retest variability than 2DST. CONCLUSIONS: Using 2DTagg as reference, 3DST had better agreement and less bias for global and regional LS and CS. At the segmental level, 3DST demonstrated comparable agreement but lower bias versus 2DTagg compared with 2DST. Also, test-retest vari

Published
2018

24. Improvements of Myocardial Deformation Assessment by Three-Dimensional Speckle-Tracking versus Two-Dimensional Speckle-Tracking Revealed by Cardiac Magnetic Resonance Tagging

Author

Amzulescu, Mihaela S., primary, Langet, Hélène, additional, Saloux, Eric, additional, Manrique, Alain, additional, Slimani, Allison, additional, Allain, Pascal, additional, Roy, Clotilde, additional, de Meester, Christophe, additional, Pasquet, Agnès, additional, Somphone, Oudom, additional, De Craene, Mathieu, additional, Vancraeynest, David, additional, Pouleur, Anne-Catherine, additional, Vanoverschelde, Jean-Louis, additional, and Gerber, Bernhard L., additional

Published
2018
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25. Head-to-Head Comparison of Global and Regional Two-Dimensional Speckle Tracking Strain Versus Cardiac Magnetic Resonance Tagging in a Multicenter Validation Study.

Author

UCL - SSS/IREC/CARD - Pôle de recherche cardiovasculaire, UCL - (SLuc) Service de pathologie cardiovasculaire, Amzulescu, Mihaela Silvia, Langet, Hélène, Saloux, Eric, Manrique, Alain, Boileau, Laurianne, Slimani, Alisson, Allain, Pascal, Roy, Clotilde, de Meester de Ravenstein, Christophe, Pasquet, Agnes, De Craene, Mathieu, Vancraeynest, David, Pouleur, Anne-Catherine, Vanoverschelde, Jean-Louis, Gerber, Bernhard, UCL - SSS/IREC/CARD - Pôle de recherche cardiovasculaire, UCL - (SLuc) Service de pathologie cardiovasculaire, Amzulescu, Mihaela Silvia, Langet, Hélène, Saloux, Eric, Manrique, Alain, Boileau, Laurianne, Slimani, Alisson, Allain, Pascal, Roy, Clotilde, de Meester de Ravenstein, Christophe, Pasquet, Agnes, De Craene, Mathieu, Vancraeynest, David, Pouleur, Anne-Catherine, Vanoverschelde, Jean-Louis, and Gerber, Bernhard

Abstract

BACKGROUND: Despite widespread use to characterize and refine prognosis, validation data of two-dimensional (2D) speckle tracking (2DST) echocardiography myocardial strain measurement remain scarce. METHODS AND RESULTS: Global and regional subendocardial peak-systolic Lagrangian longitudinal (LS) and circumferential strain (CS) by 2DST and 2D-tagged (2DTagg) cardiac magnetic resonance imaging were compared against sonomicrometry in a dynamic heart phantom and among each other in 136 patients included prospectively at 2 centers. The ability of regional LS and CS 2DST and 2DTagg to identify late gadolinium enhancement was compared using receiver operating characteristics curves. In vitro, both LS-2DST and 2DTagg highly agreed with sonomicrometry (intraclass correlation coefficient [ICC], 0.89 and ICC, 0.90, both P<0.001 with -3±2.8% and 0.34±4.35% bias, respectively). In patients, both global LS and global CS 2DST agreed well with 2DTagg (ICC, 0.89 and ICC, 0.80; P<0.001); however, they provided systematically greater values (relative bias of -37±27% and -25±37% for global LS and global CS, respectively). On regional basis, however, ICC (from 0.17 to 0.81) and relative bias (from -9 to -98%) between 2DST and 2DTagg varied strongly among segments. Ability to discriminate infarcted versus noninfarcted segments by late gadolinium enhancement was similarly good for regional LS 2DTagg and 2DST (area under the curve, 0.66 versus 0.59; P=0.08), while it was lower for CS 2DST than 2DTagg (area under the curve, 0.61 versus 0.75; P<0.001). CONCLUSIONS: The high accuracy against sonomicrometry and good agreement of global LS and global CS by 2DST and 2DTagg confirm the overall validity of 2DST strain measurement. Yet, higher intertechnique segmental variability and lower ability for detecting infarct suggest that 2DST strain estimates may be less performant on regional than on global basis.

Published
2017

27. The value of a virtual kitchen to assess the activities of daily life in Alzheimer's disease

Author

Allain, Pascal, Richard, Paul, Naud, Mickael, Besnard, J., Massenot, L., Nolin, P., Le Gall, Didier, Gerard, Marie-Françoise, MedisysResearch Lab (Medisys), Philips Research, Laboratoire d'Ingéniérie des Systèmes Automatisés (LISA), and Université d'Angers (UA)

Subjects
ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2011

28. [Frontal lobe, executive functions and cognitive control]

Author

Godefroy, Olivier, Jeannerod, Marc, Allain, Pascal, Le Gall, Didier, Laboratoire de Neurosciences Fonctionnelles et Pathologies (LNFP), Université de Lille, Droit et Santé-Centre National de la Recherche Scientifique (CNRS), Laboratoire sur le langage, le cerveau et la cognition (L2C2), École normale supérieure - Lyon (ENS Lyon)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)

Subjects
Behavior, Memory Disorders, Cognition, Mental Disorders, [SCCO.NEUR]Cognitive science/Neuroscience, Animals, Humans, Neuropsychological Tests, Cognition Disorders, Psychomotor Performance, Frontal Lobe
Abstract

International audience; The approach of executive functions began with the early description of behavioural disorders induced by frontal damage. The development of neuropsychology has led to the description of a large variety of cognitive disorders. The interpretation in cognitive terms of these disorders has emphasized the critical impairment of executive functions which are involved in non-routine situations. The role of working memory, initially suggested by animal studies, has also largely influenced theoretical approaches. Numerous studies have been interpreted within the theoretical frameworks developed by Shallice and by Baddeley. A large amount of studies have allowed the specification of control processes (initiation, inhibition...). Recent studies are beginning to investigate cognitive disorders underlying behavioural changes such as deficits of emotional, social and metacognitive processes. In addition these studies seriously question the assumption of a unique central control system. These studies have deeply influenced the clinical approach, the assessment and the diagnosis of executive syndrome. For clinical practice, these data lead to favour specific assessment of some key behavioural and cognitive deficits based on a battery of tests and structured interview of an informant.

Published
2008

29. Utilisation de la réalité virtuelle en neuropsychologie clinique

Author

Legall, D., Besnard, J., Louisy, T., Richard, Paul, Allain, Pascal, Laboratoire d'Ingéniérie des Systèmes Automatisés (LISA), Université d'Angers (UA), MedisysResearch Lab (Medisys), and Philips Research

Abstract

ISBN 1633-5767; International audience

Published
2008

31. EVACOG-Virtual Environments for Cognitive Sciences

Author

Richard, Paul, Allain, Pascal, Inglese, François-Xavier, Richard, Emmanuelle, Le Gall, Didier, Laboratoire d'Ingéniérie des Systèmes Automatisés (LISA), Université d'Angers (UA), MedisysResearch Lab (Medisys), Philips Research, and Gerard, Marie-Françoise

Subjects
ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2007

32. Projet EVACOG - Environnements Virtuels Appliqués aux Sciences Cognitives

Author

Richard, Paul, Allain, Pascal, Richard, Emmanuelle, Le Gall, Didier, Laboratoire d'Ingéniérie des Systèmes Automatisés (LISA), Université d'Angers (UA), MedisysResearch Lab (Medisys), Philips Research, and Gerard, Marie-Françoise

Subjects
ComputingMilieux_MISCELLANEOUS
Abstract

National audience

Published
2006

34. Assessment of left ventricular mass and volumes by three-dimensional echocardiography in patients with or without wall motion abnormalities : comparison against cine magnetic resonance imaging

Author

UCL - (SLuc) Service de pathologie cardiovasculaire, UCL - MD/MINT - Département de médecine interne, UCL - (SLuc) Centre des cardiopathies congénitales de l'adulte, Pouleur, Anne-Catherine, Le Polain De Waroux, Jean-Benoît, Pasquet, Agnes, Gerber, Bernhard, Gérard, Olivier, Allain, Pascal, Vanoverschelde, Jean-Louis, UCL - (SLuc) Service de pathologie cardiovasculaire, UCL - MD/MINT - Département de médecine interne, UCL - (SLuc) Centre des cardiopathies congénitales de l'adulte, Pouleur, Anne-Catherine, Le Polain De Waroux, Jean-Benoît, Pasquet, Agnes, Gerber, Bernhard, Gérard, Olivier, Allain, Pascal, and Vanoverschelde, Jean-Louis

Abstract

To evaluate if three-dimensional echocardiography (3-DE) is as accurate and reproducible as cine magnetic resonance imaging (cMR) in estimating left ventricular (LV) parameters in patients with and without wall motion abnormalities (WMA).

Published
2008

35. Reproducibility and accuracy of left ventricular mass measurements with real-time three-dimensional echocardiography: comparison with magnetic resonance imaging.

Author

UCL - Cliniques universitaires Saint-Luc, UCL - MD/MINT - Département de médecine interne, Pouleur, Anne-Catherine, Pasquet, Agnes, Gerber, Bernhard, Vanoverschelde, Jean-Louis, de Waroux, Jean-Benoit le Polain, Vancraeynest, David, Allain, Pascal, Gerard, Olivier, 79th Annual Scientific Session of the American-Heart-Association, UCL - Cliniques universitaires Saint-Luc, UCL - MD/MINT - Département de médecine interne, Pouleur, Anne-Catherine, Pasquet, Agnes, Gerber, Bernhard, Vanoverschelde, Jean-Louis, de Waroux, Jean-Benoit le Polain, Vancraeynest, David, Allain, Pascal, Gerard, Olivier, and 79th Annual Scientific Session of the American-Heart-Association

Published
2006

36. Fusion individuelle de données cérébrales multimodales : informations issues d'images numériques et connaissances expertes

Author

Revenu, Marinette, Bloyet, Daniel, Desvignes, Michel, Allain, Pascal, Travère, Jean-Marcel, Equipe Image - Laboratoire GREYC - UMR6072, Groupe de Recherche en Informatique, Image et Instrumentation de Caen (GREYC), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU), GIP Cyceron (Cyceron), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-CHU Caen, Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN)-Tumorothèque de Caen Basse-Normandie (TCBN)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS), and Queau, Yvain

Subjects
[INFO.INFO-TI] Computer Science [cs]/Image Processing [eess.IV], [INFO.INFO-TI]Computer Science [cs]/Image Processing [eess.IV]
Abstract

National audience; L'étude de l'activité fonctionnelle cérébrale à partir d'images TEP est difficile à cause de la résolution spatiale limitée et du faible rapport signal sur bruit de celles-ci. Cette étude nécessite l'utilisation conjointe et la fusion d'informations provenant de différentes modalités d'images numériques et de connaissances expertes modélisées dans des atlas. Ces derniers se rapportant à une anatomie standard, il est fondamental de les adapter auparavant à la morphologie spécifique du patient concerné. Pour résoudre au mieux les problèmes rencontrés depuis l'acquisition de l'image à l'identification des différentes zones, nous proposons dans cet article une méthodologie pour obtenir des données individualisées et pour les fusionner. La première étape fait intervenir un processus automatique de recalage de l'image TEP avec une image RM, via une radiographie par Rayons X, par l'introduction d'informations a priori extraites d'un atlas. La seconde étape vise à individualiser les atlas anatomiques pour que la superposition avec les images TEP soit plus précise. Dans cette optique, une méthode d'identification des sillons du cortex d'un patient sur une image RM 3D est présentée. L'accent est mis sur la généralité de la démarche, sur l'explicitation des connaissances et des mécanismes de fusion, et sur l'évaluation des résultats en fonction des images traitées.

Published
1995

37. Integrating functional and anatomical information to guide cardiac resynchronization therapy

Author

Tournoux, François, primary, Chan, Raymond C., additional, Manzke, Robert, additional, Hanschumacher, Mark D., additional, Chen-Tournoux, Annabel A., additional, Gérard, Olivier, additional, Solis-Martin, Jorge, additional, Heist, E. Kevin, additional, Allain, Pascal, additional, Reddy, Vivek, additional, Ruskin, Jeremy N., additional, Weyman, Arthur E., additional, Picard, Michael H., additional, and Singh, Jagmeet P., additional

Published
2009
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38. Rapid online quantification of left ventricular volume from real-time three-dimensional echocardiographic data

Author

Jacobs, Lawrence D., primary, Salgo, Ivan S., additional, Goonewardena, Sascha, additional, Weinert, Lynn, additional, Coon, Patrick, additional, Bardo, Dianna, additional, Gerard, Olivier, additional, Allain, Pascal, additional, Zamorano, Jose L., additional, de Isla, Leopoldo P., additional, Mor-Avi, Victor, additional, and Lang, Roberto M., additional

Published
2005
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39. Tracking of LV Endocardial Surface on Real-Time Three-Dimensional Ultrasound with Optical Flow.

Author

Frangi, Alejandro F., Radeva, Petia Ivanova, Santos, Andres, Hernandez, Monica, Qi Duan, Angelini, Elsa D., Herz, Susan L., Gerard, Olivier, Allain, Pascal, Ingrassia, Christopher M., Costa, Kevin D., Holmes, Jeffrey W., Homma, Shunichi, and Laine, Andrew F.

Abstract

Matrix-phased array transducers for real-time three-dimensional ultrasound enable fast, non-invasive visualization of cardiac ventricles. Segmentation of 3D ultrasound is typically performed at end diastole and end systole with challenges for automation of the process and propagation of segmentation in time. In this context, given the position of the endocardial surface at certain instants in the cardiac cycle, automated tracking of the surface over the remaining time frames could reduce the workload of cardiologists and optimize analysis of volume ultrasound data. In this paper, we applied optical flow to track the endocardial surface between frames of reference, segmented via manual tracing or manual editing of the output from a deformable model. To evaluate optical-flow tracking of the endocardium, quantitative comparison of ventricular geometry and dynamic cardiac function are reported on two open-chest dog data sets and a clinical data set. Results showed excellent agreement between optical flow tracking and segmented surfaces at reference frames, suggesting that optical flow can provide dynamic "interpolation" of a segmented endocardial surface. [ABSTRACT FROM AUTHOR]

Published
2005
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40. Generation of Synthetic but Visually Realistic Time Series of Cardiac Images Combining a Biophysical Model and Clinical Images.

Author

Prakosa, Adityo, Sermesant, Maxime, Delingette, Hervé, Marchesseau, Stéphanie, Saloux, Eric, Allain, Pascal, Villain, Nicolas, and Ayache, Nicholas

Subjects
CARDIAC imaging, TIME series analysis, MEDICAL imaging systems, ELECTROMECHANICAL technology, FOUR-dimensional imaging, BIOLOGICAL systems, CARDIOMYOPATHIES
Abstract

We propose a new approach for the generation of synthetic but visually realistic time series of cardiac images based on an electromechanical model of the heart and real clinical 4-D image sequences. This is achieved by combining three steps. The first step is the simulation of a cardiac motion using an electromechanical model of the heart and the segmentation of the end diastolic image of a cardiac sequence. We use biophysical parameters related to the desired condition of the simulated subject. The second step extracts the cardiac motion from the real sequence using nonrigid image registration. Finally, a synthetic time series of cardiac images corresponding to the simulated motion is generated in the third step by combining the motion estimated by image registration and the simulated one. With this approach, image processing algorithms can be evaluated as we know the ground-truth motion underlying the image sequence. Moreover, databases of visually realistic images of controls and patients can be generated for which the underlying cardiac motion and some biophysical parameters are known. Such databases can open new avenues for machine learning approaches. [ABSTRACT FROM PUBLISHER]

Published
2013
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