Optimization of view ordering for motion artifact suppression

Motion artifacts in MRI may be reduced by optimized view ordering. Extensiv e simulations of view-ordering techniques were performed on high-resolution phantom images to determine the best strategy for distributing motion in k -space. Although not exhaustive, simulation results indicate that minimizin g motion at the center of k-space is critical to overall image quality. For 2D imaging, using edge-center-edge view order and setting the readout dire ction parallel to the direction of the motion produces the sharpest point s pread function and the lowest image energy error. For 3D imaging, using an edge-center-edge view order proves to be the optimum choice in general. Giv en these observations, several important issues regarding the measurement o f motion effects are discussed. (C) 2001 Elsevier Science Inc. All rights r eserved.