Detectability of simulated interstitial pneumonia on chest radiographs: Comparison between irradiation side sampling indirect flat-panel detector and computed radiography

Y. Yano, H. Yabuuchi, A. Kairada, N. Tanaka, J. Morishita, T. Akasaka, Y. Matsuo, T. Kamitani, Y. Yamasaki, M. Nagao, M. Sasaki

研究成果: ジャーナルへの寄稿学術誌査読

1 被引用数 (Scopus)

抄録

Objective: To compare the detectability of simulated interstitial pneumonia on chest radiographs between an irradiation side sampling indirect flat-panel detector (ISSFPD) and computed radiography (CR).

Methods: Simulated interstitial pneumonia findings (ground-glass opacity, reticular opacity and honeycomb lung) were superimposed on an anthropomorphic chest phantom. Chest radiographs were acquired under three exposure levels (4.0, 3.2 and 2.0mAs) with an ISS-FPD and with CR. 5 thoracic radiologists evaluated 72 images for the presence or absence of a lesion over each of 6 areas. A total of 1296 observations were analysed in a receiver-operating characteristic analysis. A jackknife method was used for the statistical analysis.

Advances in knowledge: The ISS-FPD has shown its advantage compared with CR in the detection of honeycombing, one sign of interstitial pneumonia.

Results: The areas under the curves (AUCs) for the detection of simulated honeycomb lung obtained with the ISS-FPD were significantly larger than those obtained with CR at all exposure conditions. For the detection of simulated ground-glass opacity and reticular opacity, there were no significant differences between the two systems. In addition, the AUCs for the detectability of simulated honeycomb lung obtained with the ISS-FPD at all exposure levels were significantly larger than those obtained with CR at 4mAs.

Conclusion: The ISS-FPD was superior to CR for the detection of simulated honeycomb lung. Provided that the chosen model is representative of interstitial pneumonia, the use of an ISS-FPD might reduce a patient's exposure dose during the detection of interstitial pneumonia.

本文言語英語
論文番号20140075
ジャーナルBritish Journal of Radiology
87
1040
DOI
出版ステータス出版済み - 8月 1 2014

!!!All Science Journal Classification (ASJC) codes

  • 放射線学、核医学およびイメージング

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