High resolution MR angiography is important to properly visualize fine lesions in coronary arteries. In this work, we employ a time-efficient and motion-robust variable-density 3D cones trajectory for sub-millimeter data acquisition. Although the imaging data is severely undersampled, we capitalize on the diffuse aliasing properties of the non-Cartesian cones trajectory to separate the data into several respiratory phases for motion compensation. For improved image quality, we present and analyze a modified cones reordering strategy, mindful of balanced SSFP imaging and unwanted eddy current effects, for distributed k-space coverage irrespective of how the readouts are retrospectively sorted.
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