Single-shot GRASE imaging without fast gradients

Magn Reson Med. 1992 Aug;26(2):355-60. doi: 10.1002/mrm.1910260214.

Abstract

Based on the CPMG sequence, gradient- and spin-echo (GRASE) echo train length is limited by T2 decay rather than the T2* decay and phase error in echo-planar techniques, permitting a longer image acquisition period. An ultrafast GRASE sequence, utilizing a single excitation, generates a 128 x 56 true T2-weighted image in 200 ms on an unmodified commercial scanner without fast gradient switching, extreme field homogeneity, or fat signal suppression.

MeSH terms

  • Abdomen / anatomy & histology
  • Adipose Tissue / anatomy & histology
  • Artifacts
  • Brain / anatomy & histology
  • Humans
  • Image Enhancement / methods*
  • Magnetic Resonance Imaging / methods*
  • Models, Structural
  • Signal Processing, Computer-Assisted