Prospective Motion Correction for Improved Image Volume Alignment
Thompson M, Hoogenraad F, Wheaton A, Bhat D
Philips Medical Systems (Cleveland)
Misalignment of image volume data in a temporal series due to subject motion can corrupt data analysis. Prospective Motion Correction (PMC) continuously measures changes in geometry during a scan and makes adjustments on the scanner on-the-fly to realign subsequent image volume acquisitions without imposing timing restrictions or limiting minimum TR. PMC is demonstrated to accurately correct subject motion thereby preserving volume-to-volume alignment. The improved data alignment results in superior activation map performance with more intense and less diffuse activation regions compared to post-processing alignment using retrospective registration.