Figure 5:

Box plots of reconstructed absorption coefficients of malignant and benign groups (BGs) obtained at the four optical wavelengths. Both Tis–T1 and T2-T2 malignant groups have similar mean values and are combined into one malignant group. Benign group 1: Proliferative lesions, fibroadenomas and fat necrosis and/or inflammatory and reactive changes groups have similar mean values and are combined into one group. Benign group 2: Fibrocystic changes and complex cysts have similar mean values and are combined into one group. Benign group 3: Breast tissue and other benign findings. Benign group 4: Lymph node.