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Abstract #3448

Implementation of SE and GE SIR-EPI at 7 T Using Fast Switching Gradients and Parallel Imaging

David Feinberg1,2, Sudhir Ramanna1, Vibhas Deshpande3, Kamil Ugurbil4, Essa Yacoub4

1Advanced MRI Technologies, Sebastopol, CA, United States; 2University of California, Berkeley, San Francisco, CA, United States; 3Siemens, San Francisco, CA, United States; 4University of Minnesota, Minneapolis, MN, United States

FaFaster acquisitions are desirable for both anatomical and functional scans which can be limited by gradient capabilities and/or SAR, depending on the field strength and/or sequence used. The implementation of Simultaneous Image Refocusing (SIR) EPI, which refocuses multiple slices during a single gradient switch, can be limited at high fields due to the necessary increase in the readout time. However, with the use of parallel imaging and fast switching gradients, we demonstrate here the ability to achieve high quality GE and SE SIR EPI images at 7T.