Segmentation results obtained by the proposed pectoral muscle detection algorithm for some mini-MIAS images a mdb013, b mdb015, c mdb025, d mdb058, e mdb059, f mdb080, g mdb110, h mdb121, i mdb123, j mdb124, k mdb125, l mdb130, m mdb150, n mdb179, o mdb227, and p mdb240