Keywords:
Lung, Respiratory system, Thorax
Authors:
D. Shaham, I. Leichter, N. R. Bogot, A. Manevitch, N. Simanovsky, R. Lederman; Jerusalem/IL
DOI:
10.1594/ecr2010/C-0878
Results
The overall sensitivity of the CAD algorithm was 86% (median lesion size 39.3mm, mean visibility-score 2.3). As shown in Fig. 1, masses compared to nodules had significantly higher median size (50.2 vs. 20.4 mm, p<0.03) and mean visibility-score (2.5 vs. 2.0, p<0.001). Nevertheless, the sensitivity for masses (92.3%), as shown in Fig 2, was non-significantly higher (p=0.097) than for nodules (76.5%). The improvement in sensitivity for readily visible lesions (94.7%) compared to less and moderately visible lesions (79.2%) was also non-significant (p=0.063). Six malignant cases had prior chest radiographs obtained over 2 months prior to biopsy (9-59 weeks). Five of the cancers were detected by CAD on prior radiographs (mean 34 weeks) with a mean visibility-score of 1.7 and median size of 30.6 mm (83.3% sensitivity), as shown in Fig.3. Two cases of malignant nodules detected by CAD on earlier chest radiographs are displayed in Fig 4 and Fig 5.