From: Monofrequency electrical impedance mammography (EIM) diagnostic system in breast cancer screening
Diagnostic criteria | Electrical impedance mammography points (EIM) |
---|---|
Shape | |
Round, oval | 1 |
Lobular, irregular | 2 |
Contour | |
No | 0 |
Sharp | 1 |
Hyperimpedance, indistinct | 2 |
Surrounding tissues | |
Preserved | 0 |
Structure alteration/displacement | 1 |
Thickening/extrusion/retraction | 2 |
Internal electrical structure | |
Hyperimpedance | 0 |
Isoimpedance | 1 |
Hypoimpedance | 2 |
Animpedance | 3 |
Comparative electrical conductivity | |
Divergence between the histograms < 20% | 0 |
Divergence between the histograms 20–30% | 1 |
Divergence between the histograms 30–40% | 2 |
Divergence between the histograms > 40% | 3 |