Himanshu Bhat1, M. Dylan Tisdall2, Andre Jan Willem van der Kouwe2, Thorsten Feiweier3, Keith Heberlein1
1Siemens Medical Solutions USA Inc., Charlestown, MA, United States; 2A. A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, MA, United States; 3Siemens Healthcare, Erlangen, Germany
In this work we developed a novel prospective motion correction method for multi-slice single shot diffusion weighted EPI. Rigid body navigation is achieved using non diffusion encoded low resolution single shot EPI images as motion navigators during the diffusion scan. Two approaches: integrated and interleaved are described. The proposed methods work independent of the b-value used and do not need retrospective adjustment of the b-matrix. The compromise for the integrated method is the TE and TR increase and the corresponding signal decrease while the interleaved method requires only a small (~10%) increase in minimum TR.