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Abstract #3411

Fast Spin Echo T1w and PDw PROPELLER with Motion Correction Using Extended Echo Trains

James H. Holmes1, Philip J. Beatty2, 3, Howard A. Rowley4, Ann Shimakawa5, Jean H. Brittain1

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

In this work, we describe a method for generating motion corrected T1w and PDw (Proton Density) weighted images using the PROPELLER acquisition. Traditionally, PROPELLER relies on wide image blades for motion correction and blade combination methods to maximize the SNR of the overall image. We demonstrate two modifications. First, a centric acquisition is performed. Motion correction parameters are then determined using the full ETL and associated blade width of 35-29 echoes. However, the data used for image generation is taken from only the center 3-5 echoes, representing the shortest TE times. The motion correction parameters from the wide blade acquisition are then used to correct the narrow blade image data.