Comparison of STIR turbo SE imaging and diffusion-weighted imaging of the lung: Capability for detection and subtype classification of pulmonary adenocarcinomas

Hisanobu Koyama, Yoshiharu Ohno, Nobukazu Aoyama, Yumiko Onishi, Keiko Matsumoto, Munenobu Nogami, Daisuke Takenaka, Wataru Nishio, Chiho Ohbayashi, Kazuro Sugimura

研究成果: Article査読

62 被引用数 (Scopus)

抄録

Objective: The aim of the study was to evaluate the diagnostic performance of diffusion-weighted imaging (DWI) for detection and subtype classification in pulmonary adenocarcinomas through comparison with short TI inversion recovery turbo spin-echo imaging sequence (STIR). Methods: Thirty-two patients (mean age, 65.2 years) with 33 adenocarcinomas (mean diameter, 27.6 mm) were enrolled in this study. The detection rates of both sequences were compared. The ADC values on DWI and the contrast ratio (CR) between cancer and muscle on STIR were measured and those were compared across subtype classifications. Finally, ROC-based positive tests were performed to differentiate subtype classifications, and differentiation capabilities were compared. Results: The DWI detection rate [85% (28/33)] was significantly lower than that of STIR [100% (33/33), P < 0.05]. The ADC values showed no significant difference regarding subtype classification; however, the CRs of bronchio-alveolar carcinomas (BACs) were significantly lower than those of other types (P < 0.05). When threshold values for differentiating BACs from others were adapted, the sensitivity and accuracy of DWI were significantly lower than those of STIR (P < 0.05). For differentiating adenocarcinomas with mixed subtypes from those with no BA component, there were no significant differences between the two sequences. Conclusion: STIR is more sensitive for detection and subtype classification than DWI.

本文言語English
ページ(範囲)790-800
ページ数11
ジャーナルEuropean Radiology
20
4
DOI
出版ステータスPublished - 2010
外部発表はい

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

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