Mario Ries1, Baudouin Denis de Senneville1, Sbastien Roujol1, Chrit Moonen1
1laboratory for molecular and functional
imaging: from physiology to therapy, CNRS/ University Bordeaux 2,
Dynamic beam-steering of high intensity focused ultrasound (HIFU) based on MR-guidance is a promising technology for the non-invasive ablation of pathological tissue in abdominal organs such as liver and kidney. A particular problem of this technique remains the intrinsic latency between the position measurement and the beam update, which leads to undesired energy dispersion and potentially to the destruction of non-pathological tissue. In this study, dynamic beam-steering using a robust Kalman-predictor for 3D motion anticipation is evaluated experimentally.