T1-weighted snapshot gradient-echo MR imaging of the abdomen

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54 Scopus citations


Magnetization-prepared ultrashort-repetition-time (snapshot) gradient-echo imaging is a technique of magnetic resonance (MR) imaging with many potential applications. In the application of this technique to abdominal imaging, the effects on contrast of phase-encoding order, resolution, preparation-phase inversion time, and data-acquisition flip angle were predicted and then demonstrated with images obtained in examinations of 22 patients. In the analysis of 36 liver lesions, snapshot images were compared with corresponding T1-weighted spin-echo images on the basis of signal-to-noise ratio (S/N) of liver and contrast-to-noise ratio (C/N) between liver and lesion. Snapshot MR imaging produced abdominal images with 192 (or 256) x 256 resolution, negligible motion artifact, and C/N 1.29 times (± 0.48) higher than that in T1-weighted spin-echo imaging. Acquisition times were 13 seconds or less, short enough for imaging during suspended respiration. Also, use of a phased-array multicoil further improves the S/N in snapshot images without acquisition-time penalty.

Original languageEnglish (US)
Pages (from-to)25-32
Number of pages8
Issue number1
StatePublished - Oct 1991


  • Liver neoplasms, 761.32, 761.33
  • Liver, MR studies, 761.1214
  • Magnetic resonance (MR), contrast enhancement
  • Magnetic resonance (MR), experimental
  • Magnetic resonance (MR), rapid imaging
  • Magnetic resonance (MR), technology

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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