ϵ�v�artery, vein, tumor, nodule, cyst, hemorrhage, infarction, blood clot, abscess, calcification, pneumonia, pleural effusion, adrenal gland, ovary, uterus, kidney, pancreas, spleen, lymph node, trabecular bone, cortical bone, endometrial stripe, myocardium, atrial wall, ventricular septum, fibrosis, scar tissue