| 摘要 |
<p>An ultrasonograph comprises: an ultrasonic probe having a capacitive ultrasonic transducer; an ultrasound observing device detachably connected to the ultrasonic probe and having a transmitting circuit for generating ultrasonic transmission signals and a receiving circuit; a transmitting ultrasonic transducer having a plurality of transmitting capacitive cells constituting a capacitive ultrasonic transducer to transmit ultrasonic waves; a receiving ultrasonic transducer having a plurality of receiving capacitive cells to receive reflected ultrasonic waves of the transmitted ultrasonic waves, and to output received ultrasonic signals; a cable for transmitted signals connecting the transmitting ultrasonic transducer to the transmitting circuit; a cable for received signals connecting the receiving ultrasonic transducer to the receiving circuit; and first and second matching units for matching, respectively, the electrical impedance to the transmitted ultrasonic signals and the received ultrasonic signals.</p> |
