Non-Contrast Cardiac 4D Flow with Bright Blood and Improved Robustness Using Multiple Thin Slab Acquisition and Variable Density Radial Sampling
Peng Lai1, Ann Shimakawa1, Joseph Yitan Cheng2, Marcus T Alley2, Shreyas S Vasanawala2, and Anja C.S Brau3
1Global MR Applications and Workflow, GE Healthcare, Menlo Park, CA, United States, 2Radiology, Stanford University, Stanford, CA, United States, 3Global MR Applications and Workflow, GE Healthcare, Munich, Germany
Cardiac 4D Flow suffers from blood signal saturation due to whole-volume imaging and limited accuracy if acquired without contrast agents. This work developed and investigated a new multiple thin slab scheme for non-contrast whole-chest 4D Flow. With in-flow enhancement and bright blood, the new sequence provides higher SNR and motion robustness than conventional 4D Flow. The proposed radial golden angle view order ensures smooth slab merging that is insensitive to cardiac and respiratory variations during the scan.
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