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Abstract #0644

Motion Insensitive ACS Acquisition Method for in-plane and Simultaneous Multi-Slice Accelerated EPI

Himanshu Bhat 1 , Jonathan R. Polimeni 2 , Stephen F. Cauley 2 , Kawin Setsompop 2 , Lawrence L. Wald 2 , and Keith Heberlein 1

1 Siemens Medical Solutions USA Inc, Charlestown, MA, United States, 2 Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Harvard Medical School, Massachusetts General Hospital, Charlestown, MA, United States

Conventional ACS sampling methods for in-plane and simultaneous multi-slice accelerated EPI are susceptible to physiological or bulk subject motion. In this work we propose a novel motion-insensitive ACS acquisition technique called FLEET for highly accelerated EPI. The performance of both conventional and FLEET ACS sampling is evaluated with tSNR analysis done with and without deliberate head nodding performed during ACS acquisition. The conventional method and FLEET give comparable results without motion, however the FLEET method performs better in the presence of motion during the ACS scan.

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