Toward Robust, Clinically-Practical Single-Breathhold 3D Cardiac Cine MRI with High Acceleration and Rapid Online Reconstruction
Peng Lai 1 , Shreyas S Vasanawala 2 , and Anja CS Brau 3
Global MR Applications & Workflow, GE
Healthcare, Menlo Park, CA, United States,
Stanford University, Stanford, CA, United States,
MR Applications & Workflow, GE Healthcare, Munich,
3D cine MRI with high spatiotemporal resolution remains
challenging due to residual artifacts and temporal
flickering. Reconstruction for k-t accelerated 3D cine
with high-density coil poses high computation demand,
which is difficult for online processing. This work
developed a new variable-density random k-t sampling
scheme that produces less-disturbing noise-like
artifacts and can be further suppressed by denoising.
Also, this work combines a few newly developed
algorithms (e.g. coil compression and data decoupling
calibration) to address the computation challenge. The
proposed sampling scheme and reconstruction framework
improves the robustness of 3D cine with 9x acceleration
and enables rapid online processing.
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