Table 2.

Sensitivity and Specificity for each radiologist at a decision threshold of BI-RADS 4

	Sensitivity				Specificity
Radiologist No.	DBT		DB/3D-AUS		DBT		DB/3D-AUS
1	0.92	(12)	1.00	(13)	0.55	(21)	0.47	(18)
2	0.92	(12)	1.00	(13)	0.55	(21)	0.18	(7)*
3	1.00	(13)	1.00	(13)	0.45	(17)	0.26	(10)
4	0.92	(12)	1.00	(13)	0.29	(11)	0.21	(8)
5	1.00	(13)	1.00	(13)	0.00	(0)	0.11	(4)
6	1.00	(13)	1.00	(13)	0.16	(6)	0.26	(10)
Average	0.96	(12.5)	1.00	(13)	0.33	(12.7)	0.25	(9.5)

Note: The significance of the change in sensitivity and specificity for individual readers was estimated using the McNemar's test. Data in parentheses are the number of correctly classified lesions, i.e. true positive in the Sensitivity column and true negative in the Specificity column. The total numbers of malignant and benign lesions are 13 and 38, respectively.

^*P<0.01 (McNemar test)