Echo-planar imaging of the liver with a standard MR imaging system

Kim Butts, Stephen J. Riederer, Richard L. Ehman, Joel P. Felmlee, Roger C. Grimm

Research output: Contribution to journalArticle

90 Scopus citations

Abstract

PURPOSE: A multisection, wholebody echo-planar imaging (EPI) sequence was developed to obtain T2-weighted images of the liver in one 18-second breath hold with a standard magnetic resonance (MR) imaging system. MATERIALS AND METHODS: This capability was achieved by dividing the data acquisition period into eight interleaved segments rather than one or two as implemented previously with EPI systems having high-power gradient subsystems. RESULTS: The interleaved echo-planar images had excellent depiction of anatomy and no identifiable respiratory artifact. In 26 lesions in 12 patients, the eight-shot echo-planar images (2,000/66 [repetition time msec/echo time msec]) had superior contrast compared with conventional T2-weighted spin-echo (SE) images (2,500/60) by an average factor of 1.22 ± 0.31 (standard deviation) and an average contrast-to-noise ratio relative to conventional T2-weighted SE images of 0.85 ± 0.22. CONCLUSION: With a conventional MR imaging system, breath-hold T2-weighted echo-planar images of the liver are comparable in diagnostic quality to conventional T2-weighted SE images.

Original languageEnglish (US)
Pages (from-to)259-264
Number of pages6
JournalRadiology
Volume189
Issue number1
DOIs
StatePublished - Oct 1993

Keywords

  • Liver neoplasms, MR, 761.121416, 761.3194, 761.33
  • Magnetic resonance (MR), comparative studies
  • Magnetic resonance (MR), echo planar, 761.121416
  • Magnetic resonance (MR), rapid imaging, 761.121416

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

Fingerprint Dive into the research topics of 'Echo-planar imaging of the liver with a standard MR imaging system'. Together they form a unique fingerprint.

  • Cite this