Samantha J. Holdsworth1, Rafael O'Halloran1,
Kristen Yeom1, Murat Aksoy1, Stefan Skare2,
1Department of Radiology,
Stanford University, Palo Alto, CA, United States; 2Clinical
Neuroscience, Karolinska Institute, Stockholm, Sweden
Diffusion-weighted (DW) and diffusion-tensor (DT) imaging has shown to be important for the assessment of spinal cord pathologies. Spinal cord DTI has been limited due to off-resonance effects that cause large geometric distortion in EPI. The zonally oblique multislice (ZOOM)-EPI technique is an approach which uses a tilted refocusing pulse to reduce the phase-encoding FOV, by which it accelerates phase-encode k-space traversal, thus reducing geometric distortion. Here we demonstrate the feasibility of ZOOM-EPI for assessing spinal tumors at 1.5T and 3T. To demonstrate the potential for further improvements in this technique, we also present distortion-corrected images acquired on a healthy volunteer at 3T.