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Planning pour la thérapie de tumeur du foie par ultrasons haute intensité

Abstract : Within the general scope of minimal invasive therapies, the presented works addresses some problems related with the planning of a percutaneous high intensity ultrasound therapy for the primary liver cancer. First, based on the analysis of some clinical CT scan dataset, the characterization of the liver anatomical structures is proposed with two graph cut-based methods: a fast and semi-interactive one allows extracting the liver and its eventual tumors; the other one extracts automatically the hepatic vascularization by help of a 3D geometrical moments-based local shape estimator. The second part is devoted to the 3D modeling of the thermal effect induced by an interstitial ultrasound therapy. The model allows simulating a multi-elements ultrasound probe. The power and delay of each element can be independently controlled. This model also takes the local vascularization into account. Three different points have been developed: 1) a fast analytical solving of the BHTE under some assumptions 2) some preliminary results of a 64 elements dynamically focused probe modeling and 3) the simulation based geometrical design of a 256 endocavitar probe.
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https://tel.archives-ouvertes.fr/tel-00497749
Contributor : Jean-Louis Dillenseger <>
Submitted on : Monday, July 5, 2010 - 6:18:30 PM
Last modification on : Friday, January 15, 2021 - 3:33:46 AM
Long-term archiving on: : Thursday, October 7, 2010 - 12:15:44 PM

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  • HAL Id : tel-00497749, version 1

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Simon Esneault. Planning pour la thérapie de tumeur du foie par ultrasons haute intensité. Traitement du signal et de l'image [eess.SP]. Université Rennes 1, 2009. Français. ⟨tel-00497749⟩

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