In cardiac cine MRI, radial data acquisition will make the motion effects being more noise-like in image domain, and to achieve high temporal resolution, sparse sampling will inevitably lead to streaking artifacts using conventional image reconstruction methods. Golden angle radial reordering which provides continuously change in angle direction will eliminate the coherence of (streaking) artifacts in the temporal dimension. While GRASP-like reconstruction method applies 1D total-variation (TV) regularization on the reconstructed temporal signal, the spatial consistence of the reconstructed images are not ensured. Here we propose a reconstruction strategy using a higher-order TV to promote the spatial imaging quality.
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