Fig. 1
From: Causal relationships between breast cancer risk factors based on mammographic features
Example of mammographic areas divided into three areas defined by the breast area and density at increasing pixel intensity thresholds, using the same image. A: reference image; B: Cumulus; C: Altocumulus; D: Cirrocumulus; and E: All thresholds combined. The light areas are the Cumulus regions subtracting Altocumulus regions. The bright areas are the Altocumulus regions subtracting Cirrocumulus regions. The brightest areas are the Cirrocumulus regions