Preoperative tumor size measurement in breast cancer patients: which threshold is appropriate on computer-aided detection for breast MRI?

Table 5 Concordance rates of MRI and CAD in 50 ductal carcinoma in situ

	Manual measurement on MRI ^a	CAD ^b with 30% threshold	CAD with 50% threshold	CAD with 100% threshold
Underestimation	16 (32.0) *	15 (30.0)	20 (40.0)	38 (76.0)
Concordance	18 (36.0)	15 (30.0)	17 (34.0)	9 (18.0)
Overestimation	16 (32.0)	20 (40.0)	13 (26.0)	3 (6.0)
Total number	50 (100.0)	50 (100.0)	50 (100.0)	50 (100.0)
p value†		0.699	0.744	< 0.001

* Data are numbers of cancers with percentages in parentheses
† The chi-square test was used to compare the outcomes of CAD with that those of MRI as a reference standard
^aMRI magnetic resonance imaging, ^bCAD computer-aided detection

ISSN: 1470-7330