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