An ultrasonic intracardiac scanner

摘要: Abstract Ultrasound cathetertip echo techniques may be applied to obtain internal dimensions of the heart. So far it has been difficult study movement structures in a cross-sectional plane. This paper describes 32-element system (outer diameter 3 mm) specially developed for instantaneous moving cardiac structures. The is based on sonar-type phase-corrected circular array techniques. It shown that such catheter can constructed. A brief discussion possible applications, limitations and preliminary vitro results given.