Skip to main content

Table 1 Descriptions of infrared (IR) imaging signs

From: The association of infrared imaging findings of the breast with prognosis in breast cancer patients: an observational cohort study

Parameter Description of sign
IR1 Temperature difference (ΔT) of the lesion site from the mirror image site of the contralateral breast. IR1 = 0 (negative) when ΔT ≤ 2 °C; IR1 = 1 (positive) when ΔT > 2 °C.
IR2 Temperature difference of the lesion site from the adjacent normal breast. IR2 = 0 (negative) when ΔT ≤ 1 °C; IR2 = 1 (positive) when ΔT > 1 °C.
IR3 Abnormal vascular morphologic patterns at and around the tumor. IR3 = 0 when the sign is absent; IR3 = 1 when the sign is present.
IR4 Focal edge or bulge of the surface contour with increased temperature. IR4 = 0 when the sign is absent; IR4 = 1 when the sign is present.
IR5 Asymmetric thermographic and vascular patterns at the tumor site. IR5 = 0 when the sign is absent; IR5 = 1 when the sign is present.
  1. The table content was reprinted with permission and adapted from Wang et al., BioMedical Engineering OnLine 2010; 9:3. Doi:10.1186/1475-925X-9-3 (Publisher: BioMed Central Ltd, part of Springer Science + Business Medica) [2], and Wang et al., Academic Radiology 2011; 18(2): 212–219 (Publisher: Elsevier) [23]