Marie Fargier-Voiron

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PURPOSE To evaluate the impact of transabdominal probe pressure on prostate positioning with an intramodality ultrasound (US) image-guided-radiotherapy system and to quantify pressure variability over the treatment course. MATERIAL AND METHODS 8 prostate cancer patients (group A) and 17 healthy volunteers underwent 3 consecutive US images with increasing(More)
PURPOSE The aim of the present work is to propose and evaluate registration algorithms of three-dimensional (3D) transabdominal (TA) ultrasound (US) images to setup postprostatectomy patients during radiation therapy. METHODS Three registration methods have been developed and evaluated to register a reference 3D-TA-US image acquired during the planning CT(More)
PURPOSE The aim of this study was to evaluate a new system based on transperineal ultrasound (TP-US) acquisitions for prostate and post-prostatectomy pre-treatment positioning by comparing this device to cone-beam computed tomography (CBCT). METHODS The differences between CBCT/CT and TP-US/TP-US registrations were analyzed on 427 and 453 sessions for 13(More)
PURPOSE To evaluate the accuracy of an intra-modality trans-abdominal ultrasound (TA-US) device against soft-tissue based Cone-Beam Computed tomography (CBCT) registration for prostate and post-prostatectomy pre-treatment positioning. METHODS The differences between CBCT and US shifts were calculated on 25 prostate cancer patients (cohort A) and 11(More)
The aim of this study is to develop and validate a deformable tracking algorithm for monitoring the motion of the target volume on 2D ultrasound (US) images during a radiotherapy fraction. The proposed method is applied on images acquired with a transperineal ultrasound (TP-US) probe on 31 treatment patient's sessions, treated with a prostate or after a(More)
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