Joshua Kaggie1,2, Seong-Eun Kim2, Dennis L. Parker2, K Craig Goodrich2, Rock Hadley2
1Physics, University of Utah, Salt Lake City, UT, United States; 2Utah Center for Advanced Imaging Research, University of Utah, Salt Lake City, UT, United States
Diffusion Weighted Imaging (DWI) susceptibility artifacts are reduced by combining an in-house gradient coil with the system gradient coil to form a composite gradient (CG) system with increased slew rates and gradient field strength. A shielded endcap birdcage coil was developed for the CG system. A human brain was imaged using a 2D ss-EPI sequence. The resulting phase encoding bandwidth was 6.25 Hz with the system gradients and 12.2 Hz with the CG, resulting in smaller susceptibility artifacts in human brain images acquired with the composite system.