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Computer-aided Classification of BI-RADS Category 3 Breast Lesions¹

¹ From the Department of Radiology, Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, NY (S.S.B., G.Y.); School of Engineering, Jerusalem College of Technology, Israel (I.S.L., B.N., P.N.B.); and Department of Radiology, Hadassah University Hospital, Jerusalem, Israel (R.B.L., M.S.L., S.I.F.). From the 2002 RSNA scientific assembly. Received January 16, 2003; revision requested March 25; revision received July 29; accepted September 5. Address correspondence to S.S.B., Staten Island University Hospital, 475 Seaview Ave, Staten Island, NY 10305-3498 (e-mail: sbuchbinder@siuh.edu).

View larger version (28K): [in a new window]   Figure 1.  ROC curve for CAC system performance assessed with the jackknife method. The three points on either side of the curve represent the lesion score-based limits. Az = area under the curve.

View larger version (16K): [in a new window]   Figure 2.  Bar graph shows the distribution of pathologically proved benign and malignant lesions among BI-RADS categories 1-5 after classification by the CAC system. Note that the likelihood of malignancy increases consistently from the lower-number categories to the higher-number categories.