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Reconstructed velocity maps for a systolic cardiac phase at two different acceleration factors. a: Reference from the fully sampled data along the AP, FH, and RL directions. b: The reconstructed velocity maps using the method from Ref. 38 and the proposed method at R = 4 and 8. c: The velocity error maps within the masked ROI. Note that the corresponding RMSE is labeled at the lower left corner of each error map.
