PMID: 9164117Apr 1, 1997Paper

Application of diffusion-weighted echo planar imaging for diagnosis of small acute and subacute brain ischemic lesions

Nihon Igaku Hōshasen Gakkai zasshi. Nippon acta radiologica
K EnomotoA Heshiki

Abstract

The aim of this study was to determine the utility of diffusion-weighted echo planar imaging (DW-EPI) for detecting acute and subacute brain ischemic foci less than 2 cm in size. Thirty patients underwent DW-EPI on a 1.5 T superconducting unit using a SE-EPI sequence with an arbitrary pair of Stejskal-Tanner gradients applied along the imaging axes. DW-EPI demonstrated all the mast recent ischemic lesions as areas of decreased diffusion, providing greater conspicuity and larger size than conventional spin-echo imaging. DW-EPI is a promising method to detect within a subsecond early ischemia and reversible ischemic changes that are not demonstrate on routine spin-echo images.

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