RSNA2004 : Dual Energy Subtraction法は間質性肺疾患の診断精度を改善するか?(平成16年度後期国際研究集会派遣会員報告書, 学術交流委員会だより)

概要

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Purpose : The purpose of the study is to evaluate the detection of simulated interstitial lung lesions on dual energy subtraction radiography method using a flat panel detector. Methods : Images were obtained using a flat panel detector system on dual energy technique with the exposure of 60kV and 130kV. Three types of interstitial lung lesions; micro-nodule, ground-glass and honeycomb patterns were simulated by using a chest phantom. The ROC analysis was performed, and P-values<0.05 were considered to identify significant differences. Results : The area under the ROC curve Az values on standard vs subtraction methods were 0.768 vs 0.963, 0.670 vs 0.917 and 0.768 vs 0.996 on micro-nodule, ground-glass, and honeycomb patterns, respectively. Significant differences were observed on all patterns. Conclusion : Dual energy subtraction radiography method using flat panel detector is a promising tool in the detection of interstitial lung lesions with an improved diagnostic accuracy.
社団法人日本放射線技術学会の論文
2005-08-20