Abstract #0442

Three Dimensional Motion Compensation for Real-Time MRI Guided Focused Ultrasound Treatment of Abdominal Organs

Mario Ries¹, Baudouin Dennis De Senneville¹, Gregory Maclair¹, Max O. Khler², Bruno Quesson¹, Chrit Moonen¹

¹UMR 5231, CNRS/Universit Bordeaux 2, Laboratory for Molecular and Functional Imaging, Bordeaux, France; ²Philips Healthcare, Vantaa, Finland

A method for real-time 3D positioning of a High Intensity Focused Ultrasound (HIFU) beam onto a moving target with simultaneous temperature monitoring is presented as a step towards MR-guided HIFU for the ablation of tumors in abdominal organs under free-breathing conditions. The feasibility of the proposed method is demonstrated with phantom experiments and an in-vivo ablation of a pig kidney.