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 Markl^4,5

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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