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Abstract #2703

Arterial Spin Labeling Using 3D Spiral TSE with A Distributed Spiral-In/Out Trajectory

Zhiqiang Li 1 , Michael Schr 1,2 , Dinghui Wang 1 , Nicholas R Zwart 1 , and James G Pipe 1

1 Neuroimaging Research, Barrow Neurological Institute, Phoenix, AZ, United States, 2 Philips Healthcare, Cleveland, OH, United States

Various segmented 3D acquisitions have been developed for Arterial Spin Labeling. Conventional spiral TSE ASL uses a spiral-out readout to collect data on a stack of spiral trajectory. So not only the spin echo is not aligned with the center of k-space, but it also requires the number of slices be equal to (or a multiple of) ETL. Here a 3D spiral TSE sequence is proposed by employing a spiral-in/out readout on a distributed spiral trajectory. The preliminary results demonstrate that the proposed technique can produce comparable or better image quality when compared to 3D GRASE ASL.

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