Ultrasonic diagnostic device

摘要

In an ultrasonic diagnostic device S according to the present invention, a reference signal generation unit 30 generates a reference signal to be used in correlation processing based on a direct reception signal obtained by receiving a first ultrasonic signal prior to being transmitted to a subject. Consequently, the ultrasonic diagnostic device S configured in this manner is able to generate a more suitable reference signal.

主权项

1. An ultrasonic diagnostic device, comprising:
(i) an image processor; (ii) an ultrasonic probe comprising first and second piezoelectric portions that are formed of a piezoelectric material; (iii) a reference signal generation circuit; (iv) a transmission unit including a circuit which supplies an electric transmission signal to the ultrasonic probe for generating a first ultrasonic signal in the ultrasonic probe; wherein the first piezoelectric portion transmits the first ultrasonic signal based on the electrical transmission signal, and wherein the second piezoelectric portion directly receives the transmitted first ultrasonic signal prior to the first ultrasonic signal being transmitted to a subject, generates an electrical direct reception signal based on the directly received first ultrasonic signal, and outputs the generated direct reception signal to a reference signal generation circuit and wherein the second piezoelectric portion receives a second ultrasonic signal generated by reflection of the first ultrasonic signal inside the subject and outputs an electrical reception signal based on the received second ultrasonic signal; and wherein the reference signal generation circuit generates a reference signal used in a correlation processing for detecting the second ultrasonic signal based on the direct reception signal generated by the second piezoelectric portion; (v) a reception unit including a circuit that receives the electrical reception signal from the ultrasonic probe and outputs a reception signal to the image processor; and (vi) a matched filter which carries out the correlation processing between the electrical reception signal based on the second ultrasonic signal and the reference signal generated by the reference signal generation circuit; wherein the image processor forms an image based on the second ultrasonic signal detected as a result of correlation processing.