logo EDITE Stephane AUDIERE
Stephane AUDIERE
État académique
Thèse soutenue le 2011-12-05
Sujet: Traitement du signal et simulations pour l'élastographie ultrasonore
Direction de thèse:
Ellipse bleue: doctorant, ellipse jaune: docteur, rectangle vert: permanent, rectangle jaune: HDR. Trait vert: encadrant de thèse, trait bleu: directeur de thèse, pointillé: jury d'évaluation à mi-parcours ou jury de thèse.
Productions scientifiques
Finite Element Simulation of Shear Wave Propagation Induced by a VCTE Probe
Comsol, Versailles, France 2010-11
Finite Element Simulation of Shear Wave Propagation Induced by a VCTE Probe
Imaging of Tissue Elasticity Conference, Snowbird, Etats Unis 2010-10
Measurement of the skin-liver capsule distance on ultrasound RF data for 1D transient elastography
MICCAI, Beijing, China, pp. 34--41 2010-09
Ultrasound-based tool for vibration-controlled transient elastography real-time assistance: automatic liver localization and skin capsule distance measurement
IEEE International Ultrasonics Symposium, Roma, Italy 2009-09
Evaluation of in vivo liver tissue characterization with spectral RF analysis versus elasticity
Ultrasonic elastography, via vibration-controlled transient elastography (VCTE™), enables to assess, under active mechanical constraints, the elasticity of the liver, correlating with fibrosis stages. On the other hand, the same VCTE™ probe can also be used in passive mode, acquiring RF lines at different locations in the liver. This paper presents a thorough evaluation of passive mode RF spectral parameters (integrated backscatter coefficient, power spectral index, effective scattering size and spectral variance), for tissue characterization on a large cohort of volunteers with various ranges of elasticity measures. Results showed that capabilities to discriminate between liver and subcutaneous fat tissues were highly variable among spectral parameters. Furthermore, it appears that no in vivo discrimination of liver elasticity/fibrosis stage can be performed with passive RF spectral analysis, at 3.5MHz
LNCS MICCAI 2011proceeding with peer review 2011
Thèse: Traitement du signal et simulations pour l'elastographie ultrasonore impulsionnelle appliquée au foie
Soutenance: 2011-12-05