Segmented Golden Ratio Radial Reordering for Dynamic Cardiac MRI with Variable Temporal Resolution

Golden angle radial reordering (GA) could provide a near-uniform k-space within a single reconstruction window with arbitrary position and duration. However, when applied with ECG-gated segmented acquisition where a single reconstruction window breaks into several temporally isolated k-space data, the k-space coverage of GA may not be as uniform as GA without ECG gating. Therefore, we sought to investigate the image artifacts caused by applying GA to ECG-gated cardiac imaging and propose a segmented GA method to address this issue.

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