High-resolution diffusion imaging with DIFRAD-FSE (diffusion-weighted radial acquisition of data with fast spin-echo) MRI

Magn Reson Med. 1999 Jul;42(1):11-8. doi: 10.1002/(sici)1522-2594(199907)42:1<11::aid-mrm3>3.0.co;2-j.

Abstract

A novel MRI method, DIFRAD-FSE (diffusion-weighted radial acquisition of data with fast spin-echo), is demonstrated that enables rapid, high-resolution multi-shot diffusion-weighted MRI without significant artifacts due to motion. Following a diffusion-weighting spin-echo preparation period, multiple radial lines of Fourier data are acquired using spin-echo refocusing. Images can be reconstructed from the radial data set using a magnitude-only filtered back-projection reconstruction algorithm that removes phase errors due to motion. Results from human brain imaging demonstrate the ability of DIFRAD-FSE to acquire multiple radial lines of Fourier data each TR period without significant artifacts due to relaxation and to produce high-resolution diffusion-weighted MRI images without significant artifacts from motion.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Algorithms
  • Artifacts
  • Brain / pathology
  • Cerebrovascular Disorders / diagnosis*
  • Diffusion
  • Equipment Design
  • Fourier Analysis
  • Humans
  • Image Enhancement / instrumentation*
  • Image Processing, Computer-Assisted / instrumentation
  • Magnetic Resonance Imaging / instrumentation*
  • Sensitivity and Specificity