Motion Effects during Single-Shot Acquisition

Single-shot echo-planar imaging (EPI) is commonly assumed to be immune to subject motion. However, head movements can reach velocities in the 100mm/s or 100/s range [1], resulting in translations and rotations of several mm or over the course of a typical readout train (tens of ms). Therefore, a simulation was performed to determine the effect of such fast movements on EPI scan quality.

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