Impact of probe pressure variability on prostate localization for ultrasound-based image-guided radiotherapy

M. Fargier-Voiron (1, 2) , B. Presles (1, 2) , P. Pommier (2) , S. Rit (1, 2) , A. Munoz (2) , H. Liebgott (3) , D. Sarrut (1, 2) , M.-C. Biston (1, 2)

1 Imagerie Tomographique et Radiothérapie
2 Centre Léon Bérard [Lyon]
3 Imagerie Ultrasonore

Purpose/Objective: For effective delivery of new radiotherapy techniques providing highly conformal dose distributions, the accurate positioning of the patient and the localization of the irradiated structures are crucial. For prostate cancer, a soft tissue imaging modality is required to setup the patient before irradiation sessions. The use of a three-dimensional transabdominal ultrasound system (3D-TA-US) could be a better alternative to X-ray based modalities because US based imaging is non-invasive,non-irradiating and allows for differentiation between soft tissues. Two issues related to an intramodality US imageguidance system for prostate cancers were investigated: 1. Impact of probe pressure on prostate localization, 2. Variability of the probe pressure during treatment sessions.

Domaines: Acoustique [physics.class-ph]

M. Fargier-Voiron, B. Presles, P. Pommier, S. Rit, A. Munoz, et al.. Impact of probe pressure variability on prostate localization for ultrasound-based image-guided radiotherapy. ESTRO 33, Apr 2014, Vienne, Austria. pp.PO-0990. ⟨hal-01053245⟩