Dual-echo breathhold T2-weighted fast spin echo MR imaging of liver lesions

John N. Rydberg, Osmo A. Tervonen, David B. Rydberg, David J. Lomas, Richard Lorne Ehman, Stephen J Riederer

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The purpose of this study was to develop a multi-shot dual-echo breathhold fast spin echo technique (DFSE) and compare it with conventional spin echo (T2SE) for T2-weighted MR imaging of liver lesions. The DFSE acquisition (EffTE1/EffTE2/TR = 66/143/2100 ms) imaged 5 sections per 17 s breathhold. T2SE imaging (TE1/TE2/TR = 60/120/2500 ms) required 16:55 (min:s) for 14 sections. Both techniques used a receive-only phased-array abdominal multicoil and provided 192 x 256 effective resolution. The results showed first and second echo relative DFSE/T2SE contrast values for 27 representative lesions (15 consecutive patients) were 1.08 ± 0.05 and 1.16 ± 0.09 (mean ± STD mean), respectively. Corresponding CNR values were 1.12 ± 0.09 and 0.97 ± 0.12. Overall DFSE was comparable-to-superior to T2SE for lesion sizing and image artifact. DFSE lesion detection was inferior to T2SE's in several patient studies because of decreased conspicuity of lesions located near multicoil edges and because of poor breathhold-to-breathhold reproducibility and lack of breathholding. However both DFSE (and T2SE) provided lesion detection rated to be of diagnostic quality for all patient studies. In conclusion, we found that DFSE provides diagnostically useful dual-echo T2-weighted MR liver images in a greatly decreased acquisition time. (C) 2000 Elsevier Science Inc.

Original languageEnglish (US)
Pages (from-to)117-124
Number of pages8
JournalMagnetic Resonance Imaging
Volume18
Issue number2
DOIs
StatePublished - Feb 2000

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liver
Liver
lesions
echoes
Magnetic Resonance Imaging
Imaging techniques
Sexually Transmitted Diseases
Artifacts
acquisition
sizing
phased arrays
shot
artifacts

Keywords

  • Comparative studies
  • Half- Fourier imaging
  • Liver neoplasms
  • Pulse sequences
  • Rapid imaging

ASJC Scopus subject areas

  • Biophysics
  • Clinical Biochemistry
  • Structural Biology
  • Radiology Nuclear Medicine and imaging
  • Condensed Matter Physics

Cite this

Dual-echo breathhold T2-weighted fast spin echo MR imaging of liver lesions. / Rydberg, John N.; Tervonen, Osmo A.; Rydberg, David B.; Lomas, David J.; Ehman, Richard Lorne; Riederer, Stephen J.

In: Magnetic Resonance Imaging, Vol. 18, No. 2, 02.2000, p. 117-124.

Research output: Contribution to journalArticle

Rydberg, John N. ; Tervonen, Osmo A. ; Rydberg, David B. ; Lomas, David J. ; Ehman, Richard Lorne ; Riederer, Stephen J. / Dual-echo breathhold T2-weighted fast spin echo MR imaging of liver lesions. In: Magnetic Resonance Imaging. 2000 ; Vol. 18, No. 2. pp. 117-124.
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