Abstract #0742
Motion-guided low-rank plus sparse (L+S) reconstruction for free-breathing dynamic MRI
Ricardo Otazo 1 , Thomas Koesters 1 , Emmanuel Cands 2 , and Daniel K Sodickson 1
1
Bernard and Irene Schwartz Center for
Biomedical Imaging, Department of Radiology, New York
University School of Medicine, New York, NY, United
States,
2
Departments
of Mathematics and Statistics, Stanford University,
Stanford, CA, United States
A non-rigid motion model is incorporated into the
low-rank plus sparse (L+S) reconstruction approach for
free-breathing accelerated dynamic MRI with separation
of background and dynamic components. The motion
operator registers the time-series of images, which
improves low-rank and sparsity conditions along the
temporal domain and enhances temporal fidelity in the
reconstructed images. The motion-guided L+S
reconstruction approach is tested in prospectively
undersampled dynamic cardiac and abdominal data sets
acquired during free-breathing.
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