Medical imaging devices for breasts, extremities, legs, knees, ankles, foot, pelvic, abdominal regions, chests, thorax, necks, ears, eyes, noses, mouths, transcranial imaging, jaw, dental, shoulder, elbows, wrists, hands, fingers, tendons, cartilage, ligaments, muscles, musculoskeletal imaging, brains, skin, fat, hearts, blood flow, tumors, gastro-enteric, gastro-intestinal, prostate, joints, bladders, cancer, fibroadenoma, other lesions, organs, cellular, testicular, ovaries, calves, thighs, tibia, and femurs