These are internal, spatially mapped microwave tomography system generated electrical property distribution images of a cancer patient’s left breast, taken somewhat into her therapy. Shown are permittivity and conductivity image sets (top and bottom image series, respectively) reconstructed at 1100 MHz. Each plane (i.e., p1 – p7) identifies a different location within system where the image was taken, and is relative to the chest wall. You can clearly see the breast outline and the features inside the breast relate to fibroglandular tissue inside the adipose tissue. This breast has undergone treatment and so most of the tumor has disappeared.