An ultrasound medical treatment system includes an ultrasound medical treatment transducer and a controller. In one arrangement, the controller movingly controls the medical treatment transducer to emit ultrasound to thermally ablate patient tissue: 1) for a plurality of predetermined time intervals...http://www.google.com/patents/US20050240124?utm_source=gb-gplus-sharePatent US20050240124 - Ultrasound medical treatment system and method
