A modified pulse sequence for in vivo diffusion imaging with reduced motion artifacts - PubMed (original) (raw)
A modified pulse sequence for in vivo diffusion imaging with reduced motion artifacts
P V Prasad et al. Magn Reson Med. 1991 Mar.
Abstract
A modified spin-echo diffusion imaging pulse sequence incorporating bipolar gradients that is less sensitive to macroscopic motion-induced artifacts is presented. Expressions for apparent diffusion coefficient in the presence of microcirculation and macroscopic motions and contrast-to-noise ratio in the diffusion map are derived. Diffusion coefficients of liquid phantoms have been measured using a 1.5-T GE Signa system. Experiments performed to demonstrate the immunity to motion-induced errors are reported. Brain images from human volunteer have also been included to show the potential clinical application of the proposed pulse sequence.
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