Ultrasonic examination for carcinoma of the breast is accomplished rapidly and reliably by the method and apparatus disclosed herein. The apparatus is comprised of a compartment in which water is drawn upward, by suction, over the breast being examined, and in which an ultrasonic transducer revolves...http://www.google.se/patents/US4206763?utm_source=gb-gplus-sharePatent US4206763 - Ultrasonic scanner for breast cancer examination
