Focal hepatic lesion detection: Comparison of four fat-suppressed T2-weighted MR imaging pulse sequences

被引:42
作者
Kanematsu, M
Hoshi, H
Itoh, K
Murakami, T
Hori, M
Kondo, H
Yokoyama, R
Nakamura, H
机构
[1] Gifu Univ, Sch Med, Dept Radiol, Gifu 5008705, Japan
[2] Kyoto Univ, Fac Med, Dept Radiol, Kyoto, Japan
[3] Osaka Univ, Sch Med, Dept Radiol, Suita, Osaka 565, Japan
关键词
angioma; gastrointestinal tract; liver neoplasms; MR; magnetic resonance (MR); comparative studies; pulse sequences;
D O I
10.1148/radiology.211.2.r99ma23363
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
PURPOSE: To evaluate fat-suppressed T2-weighted magnetic resonance (MR) imaging with conventional spin-echo (SE), breath-hold fast SE, respiratory-triggered fast SE, and breath-hold multishot SE echo-planar sequences for the detection of focal hepatic lesions. MATERIALS AND METHODS: Fat-suppressed T2-weighted MR images obtained with the four sequences in 55 patients with 81 solid and 129 nonsolid lesions were retrospectively analyzed. Image review was conducted on a serment-by-segment basis; a total of 440 liver segments were reviewed separately for solid and nonsolid lesions by three independent radiologists. Diagnostic accuracy was evaluated with receiver operating characteristic analysis. RESULTS: The mean lesion-to-liver contrast-to-noise ratio was highest on the multishot SE echo-planar images of both solid and nonsolid lesions. Fat-suppressed respiratory-triggered fast SE images had significantly better (P < .05) or comparative detectability of both solid and nonsolid lesions compared with the other types of images. Image quality was best on the respiratory-triggered fast SE images. CONCLUSION: Fat-suppressed respiratory-triggered fast SE imaging should replace fat-suppressed conventional SE imaging as a standard T2-weighted imaging examination in the detection of focal hepatic lesions.
引用
收藏
页码:363 / 371
页数:9
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