High-Resolution in vivo MR Brain Imaging at 7T Using an Embedded Optical Tracking System for Prospective Motion-Correction

Jessica Schulz¹, Thomas Siegert¹, Enrico Reimer¹, Maxim Zaitsev², Julian Maclaren², Michael Herbst², Robert Turner¹

We have designed an embedded optical tracking system that provides real-time motion information for prospective head motion correction for MRI at 7T. This system enables the acquisition of motion-corrected very high resolution in vivo MR images of the human brain (0.4 mm isotropic 3D FLASH, 0.5 mm isotropic 2D TSE). Uncorrected and corrected 3D FLASH images were acquired in four volunteers. Quantitative analysis demonstrated that the image quality was reliably improved by the motion correction.