In this work a novel 3D flip angle (FA) mapping method is introduced which combines the advantages of the AFI pulse sequence (3D, low SAR) with the motion robustness of a radial phase encode acquisition scheme. Mapping the FA is needed for human body imaging at 7 tesla to improve image quality and assessment of quantitative results. Therefore, we combined an interleaved acquisition of two FIDs, S1 and S2, acquired for different repetition times TR1 and TR2 with radial phase encode trajectory. In this study we validated this new sequence with a body phantom and in two in-vivo scans. Similar results to cartesian reference scans were obtained and reasonable motion resolved abdominal FA maps were acquired.
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