Keywords: Motion Correction, Motion Correction
Motivation: The quality of susceptibility weighted images may deteriorate under subject motion, especially at high fields, impairing further data analysis.
Goal(s): To mitigate motion artifacts through prospective motion correction(PMC) by employing 3D orbital navigators and real-time processing of a linear perturbation model.
Approach: Orbital navigators were integrated into a high-resolution 3D EPI sequence for rapid susceptibility-weighted imaging at 7T, and a real-time motion estimation pipeline was established. The impact of prospective correction for large instructed motion on the resulting images was investigated.
Results: Prospective motion correction successfully preserved the image quality of susceptibility weighted images, yielding results comparable to a scan without instructed motion.
Impact: The improvements in image quality of the susceptibility weighted images underline the high potential of a linear perturbation model with Orbital Navigators for precise and rapid prospective motion correction in ultra-high field gradient echo imaging and potentially many more applications.
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