Fig. 116 (abstract O84).

(left) Single-shot GRE-EPI MR-ARFI/thermometry sequence integrating MEG before echo train with alternating polarities (blue) to encode both temperature and ARFI. The 10ms delay (yellow box) represents tissue relaxation before the next ARFI encoding. Synchronization of HIFU sonication with MR sequence is depicted here by the external trigger TTL. (SARFI) and (STHERMO) HIFU shot schematically represented. (right) 2D multi slice balanced-SSFP images used for targeting and localization of HIFU transducer. Transverse orientation is in blue border, sagittal in red and coronal in green. Yellow box represents tree slices positioned around focus acquired with the modified EPI sequence