Abstract #4504
Undersampled Motion Compensated LOST Reconstruction for Free-Breathing Coronary MRA
Andrew Peter Aitken 1 , Mehmet Akakaya 2 , Rene Botnar 1 , and Claudia Prieto 1
1
Division of Imaging Sciences and Biomedical
Engineering, King's College London, London, London,
United Kingdom,
2
Department
of Medicine, Beth Israel Deaconess Medical Center,
Boston, MA, United Kingdom
A highly accelerated 100% scan efficiency reconstruction
approach for whole-heart coronary MRA is proposed. This
approach achieves 100% scan efficiency by estimating the
motion from an interleaved golden radial image
navigator. Further acceleration is achieved by
undersampling the MRA acquisition using a golden-step
spiral-like Cartesian acquisition and the low
dimensional structure self-learning and thresholding
(LOST) reconstruction. This LOST-motion corrected
approach leads to slightly reduced image quality in
comparison to that of an ~8 times longer scan time
navigator-gated approach.
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