Example Multiplanar Spiral bSSFP Cardiac MRI Datasets at 0.55T

The raw data is captured using "snapshot" multiplanar bSSFP imaging with spiral trajectory. The multiplanar acquisition scheme is "snapshot", i.e. each slice is acquired for a single time frame, then switched to the next slice. There are 2 multiplanar datasets Fully sampled spirals: 5x undersampled with golden-angle spirals. Data structure: kspace: #sample x #spiral_arms x #coils (mixed from all slices, will be handled properly by the github repo) kspace_info: relevant acquisition headers