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Abstract #0521

Weighting Data to Achieve Short Echo Time Contrast in PROPELLER Imaging

Philip J. Beatty1, 2, James H. Holmes3, Ann Shimakawa4, Howard A. Rowley5, Jean H. Brittain3

1Physical Sciences, Sunnybrook Research Institute, Toronto, Ontario, Canada; 2Global Applied Science Laboratory, GE Healthcare, Thornhill, Ontario, Canada; 3Global Applied Science Laboratory, GE Healthcare, Madison, WI, United States; 4Global Applied Science Laboratory, GE Healthcare, Menlo Park, CA, United States; 5Radiology, University of Wisconsin-Madison, Madison, WI, United States

We propose a technique for achieving short echo time contrast with PROPELLER acquisitions using longer echo train lengths typically reserved for T2w imaging. The desired contrast is achieved by modifying how the oversampled PROPELLER data is weighted (i.e. density compensated). The method allows the use of fewer wider blades for image reconstruction compared to short ETL approaches, resulting in significant scan time reductions.