<p>A transmitting circuit supplies signals to a first and a second ultrasonic probe in such a manner that an observation axis 3a of a first ultrasonic beam transmitted from the first ultrasonic probe and an observation axis 3b of a second ultrasonic beam transmitted from the second ultrasonic probe intersect with each other at a point of intersection, and that a time for a pulse wave transmitted from the first ultrasonic probe to pass through the point of intersection and a time for a pulse wave transmitted from the second ultrasonic probe to pass through the point of intersection overlap with each other. As a result, a third ultrasonic beam is formed on an axis 3c different from the observation axes 3a, 3b. A receiving processing circuit extracts and processes a signal corresponding to a reflected wave from a point on the third axis 3c.</p>
申请公布号
WO2009145239(A1)
申请公布日期
2009.12.03
申请号
WO2009JP59730
申请日期
2009.05.21
申请人
CANON KABUSHIKI KAISHA;UNIVERSITY OF TSUKUBA;SHIINA, TSUYOSHI;NAGAE, KENICHI;SOMEDA, YASUHIRO;OIKAWA, KATSUYA