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 L. Ehman, Stephen J. Riederer

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

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

Keywords

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

ASJC Scopus subject areas

  • Biophysics
  • Biomedical Engineering
  • Radiology Nuclear Medicine and imaging

Fingerprint Dive into the research topics of 'Dual-echo breathhold T<sub>2</sub>-weighted fast spin echo MR imaging of liver lesions'. Together they form a unique fingerprint.

Cite this