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.