Murat Aksoy1, Matus Straka1, Stefan Skare1, Rexford Newbould2, Samantha Holdsworth1, Juan Santos3, Roland Bammer1
1Department of Radiology, Stanford University, Stanford, CA, USA; 2GlaxoSmithKline, London, UK; 3Department of Electrical Engineering, Stanford University, Stanford, CA, USA
Due to its prolonged acquisition time and inherent motion sensitivity, motion correction for DTI is a must for clinically acceptable image quality. In this study, we used a real-time optical motion correction system that relies on monovison to correct for rigid head motion artifacts in DTI. The proposed system employs a single camera mounted on the head coil and a planar marker with a checkerboard pattern on it. Relative changes in marker pose are used to update the gradient and RF waveforms in real-time. Results show that the proposed system is effective in correcting for pixel misregistration and signal dropouts caused by patient motion in DTI.