Fast Inter-Scan Motion Detection and Compensation

Tim Nielsen¹, Peter Brnert¹, Julien Sngas¹

In a typical MRI exam multiple scans are performed. The geometry of these scans is planned on a survey. If the patient moves after the acquisition of the survey, the scanned location is different from the planned location. We present a fast method to detect and correct for motion between individual scans of an exam using sets of three orthogonal slices with low resolution to determine and track the head position. This tracking method is a simple, reliable and efficient approach to cope with inter-scan motion. It requires no user interaction and does not interfere with the clinical workflow..