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Abstract #3233

Respiratory Controlled Adaptive K-space Reordering (ReCAR) Improves 4D Flow Image Quality

Ning Jin1, Andreas Greiser2, Kelvin Chow3, Susanne Schnell4, Alex J Barker4, and Michael Markl4,5

1Siemens Healthcare, Columbus, OH, United States, 2Application Development, Siemens Healthcare, Erlangen, Germany, 3Siemens Healthcare, Chicago, IL, United States, 4Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States, 5Department of Biomedical Engineering, Northwestern University, Chicago, IL

4D flow normally uses respiratory gating to mitigate breathing artifacts for thoracic and abdominal applications. Respiratory Controlled Adaptive k-space Reordering (ReCAR) employs k-space reordering based on the current respiratory position. It has been reported to increase respiratory gating efficiency for 4D flow applications. The purpose of this study was to systematically compare the image quality of 4D flow data acquired with and without adaptive k-space reordering.

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