An ultrasonic diagnostic apparatus includes one transmitting coil arranged in the longitudinal direction of an endoscope inserting portion in an ultrasonic endoscope, and another transmitting coil for detecting the position and the direction, which detects the position and the direction of a tomographic...http://www.google.fr/patents/US6755791?utm_source=gb-gplus-shareBrevet US6755791 - Ultrasonic diagnostic apparatus and ultrasonic diagnostic method
Ultrasonic diagnostic apparatus and ultrasonic diagnostic method