Zobrazeno 1 - 10
of 163
pro vyhledávání: '"Didier Vray"'
Autor:
Aneline Dolet, François Varray, Simon Mure, Thomas Grenier, Yubin Liu, Zhen Yuan, Piero Tortoli, Didier Vray
Publikováno v:
EURASIP Journal on Advances in Signal Processing, Vol 2018, Iss 1, Pp 1-10 (2018)
Abstract Photoacoustics is a hybrid modality used to image biological tissues. As optical absorption of tissues depends on the wavelength of the transmitted light, multispectral photoacoustic datasets can be obtained by changing this wavelength. This
Externí odkaz:
https://doaj.org/article/1cdf3626cbe048789ee4994d07d0bd09
Autor:
Maëva Vallet, François Varray, Jérôme Boutet, Jean-Marc Dinten, Giosuè Caliano, Alessandro Stuart Savoia, Didier Vray
Publikováno v:
Photoacoustics, Vol 8, Iss C, Pp 48-58 (2017)
Photoacoustic (PA) signals are short ultrasound (US) pulses typically characterized by a single-cycle shape, often referred to as N-shape. The spectral content of such wideband signals ranges from a few hundred kilohertz to several tens of megahertz.
Externí odkaz:
https://doaj.org/article/e4f6b52d1d4b41cea7599e8d6feb32a2
Autor:
Aneline Dolet, Rita Ammanouil, Virginie Petrilli, Cédric Richard, Piero Tortoli, Didier Vray, François Varray
Publikováno v:
Sensors, Vol 21, Iss 10, p 3366 (2021)
Multispectral photoacoustic imaging is a powerful noninvasive medical imaging technique that provides access to functional information. In this study, a set of methods is proposed and validated, with experimental multispectral photoacoustic images us
Externí odkaz:
https://doaj.org/article/35ada7b36e0c45b6ad2c404045a928d2
Publikováno v:
EURASIP Journal on Advances in Signal Processing, Vol 2010 (2010)
Blood motion estimation provides fundamental clinical information to prevent and detect pathologies such as cancer. Ultrasound imaging associated with Doppler methods is often used for blood flow evaluation. However, Doppler methods suffer from short
Externí odkaz:
https://doaj.org/article/a0abc7bb1abb4a8792123f1b88a65cab
Publikováno v:
EURASIP Journal on Advances in Signal Processing, Vol 2007 (2007)
A new formulation for the estimation of the time-scaling factor between two ultrasound signals is presented. The estimator is derived under the assumptions of a small time-scaling factor and signals with constant spectrum over its bandwidth. Under th
Externí odkaz:
https://doaj.org/article/a5aca0b716364fe8938b005c1c42cd46
Publikováno v:
Ultrasound in Medicine & Biology
Ultrasound in Medicine & Biology, Elsevier, In press, ⟨10.1016/j.ultrasmedbio.2021.01.001⟩
Ultrasound in Medicine & Biology, Elsevier, In press, ⟨10.1016/j.ultrasmedbio.2021.01.001⟩
International audience; Assessing arterial-wall motion and deformations may reveal pathologic alterations in biomechanical properties of the parietal tissues and, thus, contribute to the detection of vascular disease onset. Ultrasound image sequences
Autor:
Didier Vray, Rytis Jurkonis, Aimilia Gastounioti, Zhifan Gao, André Sérusclat, Konstantina S. Nikita, Spyretta Golemati, Guillaume Zahnd, Tomi Laitinen, Fereshteh Yousefi Rizi, Maciej Orkisz, Heikki Yli-Ollila, Jason S. Au, Maureen J. MacDonald, Monika Makūnaitė, Hamid Behnam, Tiina M. Laitinen, Nassir Navab
Publikováno v:
Ultrasound in Medicine & Biology
Ultrasound in Medicine & Biology, Elsevier, 2020, 46 (10), pp.2605-2624. ⟨10.1016/j.ultrasmedbio.2020.06.006⟩
Ultrasound in Medicine & Biology, Elsevier, 2020, 46 (10), pp.2605-2624. ⟨10.1016/j.ultrasmedbio.2020.06.006⟩
International audience; Motion extracted from the carotid artery wall provides unique information for vascular health evaluation. Carotid artery longitudinal wall motion corresponds to the multiphasic arterial wall excursion in the direction parallel
Autor:
Philippe Blanc-Benon, Didier Vray, Florian Vixege, P.Y. Courand, Simon Mendez, Damien Garcia, Franck Nicoud
Publikováno v:
Computer Methods in Biomechanics and Biomedical Engineering
Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis, 2020, 23, pp.S300-S302. ⟨10.1080/10255842.2020.1816300⟩
Computer Methods in Biomechanics and Biomedical Engineering, 2020, 23, pp.S300-S302. ⟨10.1080/10255842.2020.1816300⟩
Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis, 2020, 23, pp.S300-S302. ⟨10.1080/10255842.2020.1816300⟩
Computer Methods in Biomechanics and Biomedical Engineering, 2020, 23, pp.S300-S302. ⟨10.1080/10255842.2020.1816300⟩
Heart failure affects the heart’s ability to meet the oxygen needs of the organs. It concerns more than one million people in France. It can be defined by the reduced capacity of the heart to be fi...
Autor:
Pierre Lantelme, Thibaud Mathis, Didier Vray, Cedric Rochepeau, Brahim Harbaoui, Charles Jabour, Damien Garcia, Odyssée Merveille, Olivier Loria
Publikováno v:
International Symposium on Biomedical Imaging
International Symposium on Biomedical Imaging, Apr 2021, Nice (virtual), France
ISBI
International Symposium on Biomedical Imaging, Apr 2021, Nice (virtual), France
ISBI
International audience; The Foveal Avascular Zone (FAZ) is commonly analyzed from OCT-A images to diagnose retinal diseases. When quantitative measures are required, ophthalmologists manually draw the contours of the FAZ and compute several anatomica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::778be143e50076dca23b31e85073e8c4
https://hal.archives-ouvertes.fr/hal-03154386
https://hal.archives-ouvertes.fr/hal-03154386
Autor:
Florian Vixège, Alain Berod, Pierre-Yves Courand, Simon Mendez, Franck Nicoud, Philippe Blanc-Benon, Didier Vray, Damien Garcia
Publikováno v:
Physics in Medicine and Biology
Physics in Medicine and Biology, 2022, 67 (9), pp.095004. ⟨10.1088/1361-6560/ac62fe⟩
Physics in Medicine and Biology, IOP Publishing, 2022, 67 (9), pp.095004. ⟨10.1088/1361-6560/ac62fe⟩
Physics in Medicine and Biology, 2022, 67 (9), pp.095004. ⟨10.1088/1361-6560/ac62fe⟩
Physics in Medicine and Biology, IOP Publishing, 2022, 67 (9), pp.095004. ⟨10.1088/1361-6560/ac62fe⟩
Intraventricular vector flow mapping (iVFM) is a technique for retrieving 2-D velocity vector fields of blood flow in the left ventricle. This method is based on conventional color Doppler imaging, which makes iVFM compatible with the clinical settin