Figure 3

A 48-year-old woman with right breast cancer. IR imaging shows abnormally increased focal surface temperature (positive IR1 sign with dT = 1.2°C compared with the contralateral mirror image site; positive IR2 sign with dT = 2°C compared with the remaining breast tissue in the ipsilateral breast), abnormal vascular pattern (IR3 signs including bifurcated vascular pattern, transverse vascular pattern, vascular completeness) and an asymmetric vascular pattern (IR5) in the right upper breast (arrows). The ln(OD) value for this finding scored by the interpreting radiologist was: -5.463+0.0872(48)+0.3783(1)+1.9157(0)+0.1728(1)+0.1578(3)+1.0278(0)+1.0363(1) = 0.7834, which is higher than the most optimal cut-off point (0.30) we selected in Table 4, and this is test-positive based on this cut-off point. (The radiologist scored the IR1 scale for this lesion as 1, therefore, the IR1_A = 1 and IR1_B = 0).