Motion Artifact Correction in 3D Multishot EPI-DTI with Real-Time 2D Navigators
Kholmovski E, Shi X, Kim S, Jeong E, Parker D
University of Utah
Subject motion during the diffusiongradients can cause motion artifacts in the resultant DW images, and consequently can result in reduced DTI measurement accuracy in multishot DW images. In this report, a motion artifact correction scheme for multi-shot 3D EPI-DTI with one EPI readout per kx-ky or kx-kz plane is described. This technique can be used to reduce artifacts caused by subject motion during diffusion gradients or subject motion between shots or averages and, therefore, to improve the accuracy of DTI measurements.