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Abstract #0214

Initial imaging experience with a head gradient (MAGNUS) at 3.0T operating at 200 mT/m and 500 T/m/s

Thomas KF Foo1, Ek T Tan1, Mark Vermilyea1, Yihe Hua1, Eric Fiveland1, Joseph Piel1, Keith Park1, Justin Ricci1, Paul Thompson1, Gene Conte1, Matthew Tarasek1, Desmond TB Yeo1, David Lee2, J Kevin DeMarco3, Robert Shih3, Maureen Hood3,4, Heechin Chae5, and Vincent B Ho3,4

1GE Global Research, Niskayuna, NY, United States, 2GE Healthcare, Florence, SC, United States, 3Walter Reed National Military Medical Center, Bethesda, MD, United States, 4Uniformed Services University of the Health Sciences, Bethesda, MD, United States, 5Ft. Belvoir Community Hospital, Ft. Belvoir, VA, United States

Healthy volunteer subjects were safely imaged in a 3.0 T MRI system with an ultra-high performance head-gradient coil. The MAGNUS coil operates at 200 mT/m and 500 T/m/s, simultaneously on all 3-axes, and has a patient (head) bore diameter of 37-cm. Substantial reduction in pulse sequence TE, TR, and echo-planar imaging echo spacing was achieved with observable improvement in image quality. The design enabled the achievement of higher peripheral nerve stimulation thresholds compared to that for whole-body gradient coils.

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