Andre Jan Willem van der Kouwe1, Himanshu Bhat2
1A. A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, MA, United States; 2Siemens Healthcare US, Charlestown, MA, United States
By ordering the spokes of a 3D radial encoded scan in such a way that images may be reconstructed from smaller windows of the acquisition, rigid body motion detection and correction is possible. A method is presented for uniformly ordering the spokes across a hierarchy of window lengths, along with a hierarchical image reconstruction approach that results in a complete and consistent k-space representation and final reconstruction. The method is demonstrated in an ultrashort TE scan of a volunteers brain.
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