Self-Navigated Detection of Motion in 3D Abdominal Imaging
Brau A, Shankaranarayanan A, Brittain J
A generalized self-navigated motion detection technique was previously demonstrated to derive motion information directly from MR data acquired during 2D imaging. In this work, we extend the concept of self-navigation to a three-dimensional sequence to investigate whether motion-correlated DC signal modulation can be detected in 3D volumes. Initial feasibility results using a 3D Cartesian spoiled gradient echo sequence are presented in volunteer abdominal studies, demonstrating the applicability of self-navigated motion detection to volumetric acquisitions in all scan planes. In addition, the effect of fat suppression inversion pulses on the self-navigated signal is investigated.