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Selenium-Based Digital Radiography Versus High-Resolution Storage Phosphor Radiography in the Detection of Solitary Pulmonary Nodules Without Calcification

Receiver Operating Characteristic Curve Analysis

Kazuo Awai1, Masanori Komi and Shinichi Hori

1 All authors: Department of Radiology, Rinku General Medical Center, 2-23 Rinku-orai-kita, Izumisano, Osaka 598-8577, Japan.



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  		Fig. 1. —Graph shows mean receiver operating curve for detection of solitary pulmonary nodules. Difference in average performances of the two modalities is statistically significant (p < 0.05). AUC = Area under receiver operating characteristic curve.

 


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  		Fig. 2A. —68-year-old woman with lung cancer. Selenium-based digital radiograph shows nodule with poorly defined margin in right lower lung field (arrows).

 


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  		Fig. 2B. —68-year-old woman with lung cancer. High-resolution storage phosphor radiograph barely shows nodule seen in A.

 


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  		Fig. 2C. —68-year-old woman with lung cancer. High-resolution CT scan shows same nodule (arrows) with ground-glass opacity in right lower lobe.

 

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