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Abstract #0990

High Resolution T2W imaging using Multi-shot Reduced Field-of-View PROPELLER

Xinzeng Wang1, Daniel V Litwiller2, Lloyd Estkowski3, Kang Wang4, Arnaud Guidon5, Jason R Stafford6, and Ersin Bayram1

1Global MR Applications & Workflow, GE Healthcare, Houston, TX, United States, 2Global MR Applications & Workflow, GE Healthcare, New York, NY, United States, 3Global MR Applications & Workflow, GE Healthcare, Menlo Park, CA, United States, 4Global MR Applications & Workflow, GE Healthcare, Madison, WI, United States, 5Global MR Applications & Workflow, GE Healthcare, Boston, MA, United States, 6M. D. Anderson Cancer Center, Houston, TX, United States

Multi-shot fast-spin-echo based PROPELLER (FSE-PROPELLER) combines the robustness to off-resonance and bulk motion and has been increasingly used in body imaging. However, FSE-PROPELLER methods require longer acquisition times compared with conventional FSE methods, especially in high resolution imaging with small FOV, since the oversampling is not confined to a single axis. Outer volume suppression alone can provide a modest reduction in scan time. In this work, we optimized the rotating outer volume suppression method and combined it with variable refocusing flip angles to further reduce scan time for high resolution T2W imaging.

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