Eric Aboussouan1, Jim Pipe1
1Barrow Neurological Institute,
The previously described ROTOR (Radially Oriented Tri-Dimensionally Organized Readouts) pulse sequence allows 3D DWI with high SNR efficiency and lower SAR compared to DW FSE and reduced off-resonance artifacts and improved 3D phase correction compared to DW EPI. This work describes improvements in the pulse sequence and reconstruction scheme allowing greater robustness to motion. Blades are made wider by combining odd and even non-CPMG echoes and are gridded off-center to effectively reflect the linear component of the motion phase.