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Abstract #0234

High-Resolution, Echo Planar Imaging on a Compact MRI Scanner: Applications in Stroke and Neuroimaging

Ek T Tan1, Paul T Weavers2, Erin M Gray2, Christopher J Hardy1, John F Schenck1, Matt A Bernstein2, Yunhong Shu2, Thomas KF Foo1, and John Huston2

1GE Global Research, Niskayuna, NY, United States, 2Radiology, Mayo Clinic, Rochester, MN, United States

Rapid (six minutes and under) neuroimaging protocols can improve patient throughput and scanner utilization, especially when accelerated using the relatively fast EPI readout. However, susceptibility-related image distortion in EPI has limited its useful spatial resolution (2-2.5mm) conventional, whole-body 3T MRI. A 3.5-fold faster slew-rate head-only gradient on a novel low-cryogen compact 3T scanner can provide an effective platform for twofold-faster EPI that achieves higher spatial resolution (1mm). The utility of rapid (under one minute) single- and multi-shot T2-weighted EPI on the compact 3T is evaluated and compared to routine T2-FSE imaging in patients with brain tumors and stroke.

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