Keywords: Motion Correction, BrainHigh-resolution, 3D structural scans are susceptible to patient motion as they take several minutes or more to acquire. Radial MRI acquisitions are emerging as a motion-robust alternative to Cartesian trajectories. Most approaches involve co-registration of navigator images once the acquisition is complete. However, the time needed for co-registration of navigator images, coupled with the long reconstruction times required for high-resolution NUFFT, is a challenge for integration of motion-compensated non-Cartesian imaging into clinical protocols. In this work we developed a motion-compensated online gridding algorithm to perform adaptive motion compensated reconstruction overlapped with the acquisition.
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