Motion Tracking System for Real Time Adaptive Imaging and Spectroscopy

The typical way to control motion in real-time adaptive magnetic resonance imaging (MRI) and spectroscopy is to sedate the patient and/or use a restraint system (e.g. straps) or fixtures that remind the patient to remain still. The use of post-processing techniques can help clean-up images affected by motion but these are not an ideal solution or as effective. A two camera motion detection system is being developed to subtract out motion, but to date has not solved the problem. The current invention addresses the issue of external patient motion with a hardware and software solution that compensates in real-time for patient movement during an MRI acquisition. Retrograde reflector (RGR) technology is utilized for real-time motion detection and correction. The positional change data is fed to the MRI acquisition control system and the gradients are adjusted accordingly to maintain the center of the acquisition plane – thus eliminating motion artifacts. Jessica Silvaggi

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