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MR of focal liver lesions: Comparison of breath-hold and non-breath-hold hybrid rare and conventional spin-echo T2-weighted pulse sequences

✍ Scribed by Kenneth D. Carpenter; Shane E. Macaulay; Scott J. Schulte; Richard G. Obregon; Rendon C. Nelson; Howard E. Simon; Udo P. Schmiedl

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
896 KB
Volume
6
Category
Article
ISSN
1053-1807

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✦ Synopsis

Abstract

To compare liver lesion detection rates, tissue signal and noise data, and qualitative parameters for breathhold (BH) and non‐breath‐hold (NBH) hybrid rapid acquisition with relaxation enhancement (RARE) and conventional spin‐echo (CSE) T2‐weighted (CSE‐T2) MR sequences, 20 patients were imaged using all three sequences. Lesion detection rates were 73.5% for the CSE‐T2 sequence and 81.1% and 88.6% for the BH‐RARE and NBH‐RARE sequences, respectively (P = .027). Mean lesion‐to‐liver signal‐difference‐to‐noise ratio for the NBH‐RARE sequence was 14.0 ± 11.5, significantly greater than 9.8 ± 7.8 obtained for the BH‐RARE sequence (P = .050) and 9.0 ± 6.2 obtained for the CSE‐T2 sequence (P = .015). The NBH‐RARE sequence demonstrated fewer artifacts and greater overall image quality compared to the CSE‐T2 sequence. The NBH‐RARE sequence is a useful alternative to the CSE‐T2 sequence providing a higher mean lesion‐to‐liver signal‐difference‐to‐noise ratio and lesion detection rate and better overall image quality.

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