Saikat Sengupta1,
Sasidhar Tadanki, John C . Gore1, E. Brian Welch1
1Radiology
and Radiological Sciences, Vanderbilt University, Nashville, TN, United
States
We present the development and use of inductively coupled wireless NMR markers for prospective rigid body motion correction at 7 Tesla with the ultimate goal of real time head motion correction. Three 5 mm markers mounted on a phantom are located using a linear navigator. Motion is estimated in real time and imaging geometry is updated prospectively to compensate for motion with 6 degrees of freedom. Effective real time correction of complex motions in 1mm3 voxel size gradient echo imaging is demonstrated. Inductively coupled markers add significant benefits in flexibility, comfort, size and receiver channel requirements while maintaining performance.