Abstract #2742
Free-breathing Motion Corrected Phase Contrast Flow Quantification
Hui Xue 1 , Peter Kellman 2 , Kendall O'Brien 3 , and Michael Schacht Hansen 1
1
Magnetic Resonance Technology Program,
National Heart, Lung, and Blood Institute, National
Institutes of Health, Bethesda, MARYLAND, United States,
2
Medical
Image and Signal Processing Program, National Heart,
Lung, and Blood Institute, National Institutes of
Health, Bethesda, MARYLAND, United States,
3
Children's
National Medical Center, Washington, DC, United States
Phase contrast measurements can either be acquired with
a breath-held segmented acquisition or a free-breathing
acquisition with multiple averages to mitigate
respiratory motion artifacts. The breath-held techniques
require long breath-holds that are poorly tolerated by
patients and the multiple average acquisitions are time
consuming and suffer from reduced vessel edge sharpness.
This work proposes a new approach for free breathing
phase contrast velocity measurements where motion
correction is explicitly integrated into the
reconstruction along with non-linear parallel imaging.
The technique provides faster high-resolution free
breathing flow quantification.
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