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.
Keywords