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Abstract #1611

Reduced-FOV Diffusion Imaging with ZOnal Oblique Multislice (ZOOM) Combined with Readout-Segmented (RS)-EPI

Samantha J. Holdsworth1, Stefan Skare1, Rafael Luis O'Hallaran1, Roland Bammer1

1Radiology, Stanford University, Palo Alto, CA, United States

Diffusion-weighted imaging (DWI) using EPI has been limited by geometric distortion and blurring, particularly in regions with large off-resonance effects. Distortions can be reduced by reducing the phase-encode FOV, and by reducing the echo-spacing. For the former, we implement the ZOnal Oblique Multislice (ZOOM) technique, which uses a tilted refocusing pulse to spatially select a region of interest. To reduce echo-spacing further, we use the readout-segmented (RS)-EPI technique. We show that the combination of the ZOOM pulse and RS-EPI results in images of the spine and orbits with reduced geometric distortion.