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Abstract #2126

Faster MRI imaging of perianal fistulas through a limited sequence protocol based on high-resolution free-breathing post-contrast imaging, with comparison to standard care

Andreas M. Loening 1 , Pejman Ghanouni 1 , Joseph Y. Cheng 2 , Marcus T. Alley 1 , and Shreyas S. Vasanawala 1

1 Dept. of Radiology, Stanford University School of Medicine, Stanford, CA, United States, 2 Electrical Engineering, Stanford University, Stanford, CA, United States

Standard MRI imaging of perianal fistulas utilizes multiple planes of T2 weighted sequences in addition to pre and post-contrast imaging. To decrease the length of time these studies require, we demonstrated that a fast protocol utilizing a single plane of T2 in combination with a high-resolution free-breathing post-contrast 3D SPGR sequence (with appropriate reformats derived during post-processing) was equivalent to a conventional protocol in the evaluation of perianal fistulas. This greatly reduces total scan time from 30-40 minutes to less than 15, and may in fact improve diagnostic accuracy.

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