Abstract #4624

Real-Time Optical Motion Correction for Diffusion Tensor Imaging

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.