Abstract #1613

Improved Prospective Optical Motion Correction for DTI Using an Extended-Field-Of-View and Self-Encoded Marker

Murat Aksoy¹, Christoph Forman¹, Matus Straka¹, Samantha Jane Holdsworth¹, Stefan Tor Skare¹, Juan Manuel Santos², Joachim Hornegger³, Roland Bammer¹

¹Department of Radiology, Stanford University, Stanford, CA, United States; ²Electrical Engineering, Stanford University, Stanford, CA, United States; ³Computer Science, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany

Due to the prolonged acquisition time, correction of rigid-head motion artifacts is essential for diagnostic image quality in diffusion tensor imaging (DTI). In this study, we performed prospective, real-time rigid head motion correction for DTI. This is achieved by using a single camera mounted on a head coil together with a 3D, self-encoded checkerboard marker that is attached to the patient's forehead. The results show that the proposed setup is very effective in removing rigid head motion artifacts even for very motion-sensitive scans, such as DTI.