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Abstract #2613

T2-Weighted Body Imaging with PROPELLER Using Parallel Imaging with Across Blade Calibration

James H. Holmes1, Philip J. Beatty2, Scott B. Reeder3,4, Zhiqiang Li5, Reed F. Busse1, Ajeetkumar Gaddipati6, Jean H. Brittain1

1Applied Science Laboratory, GE Healthcare, Madison, WI, United States; 2Applied Science Laboratory, GE Healthcare, Menlo Park, CA; 3Radiology, University of Wisconsin-Madison, Madison, WI, United States; 4Medical Physics, University of Wisconsin-Madison, Madison, WI, United States; 5GE Healthcare, Phoenix, AZ; 6GE Healthcare, Waukesha, WI, United States

This work demonstrates the application of a shared calibration scheme for autocalibrated parallel imaging to enable greater blade acceleration for abdominal PROPELLER. The shared calibration method uses external calibration data as well as a small amount of internal calibration data per blade. The technique is shown to improve robustness to motion for free-breathing T2-weighted abdominal body imaging. Results were found to compare favorably to respiratory-gated Cartesian exams suggesting that the PROPELLER approach may allow robust imaging in individuals where respiratory gating is not effective.