| 摘要 |
In an ultrasonic diagnostic equipment for performing synthetic aperture, deterioration of picture quality produced by the movement of an object is prevented, thereby to provide an excellent image. Arrayed piezoelectric transducers are driven by a transmitting circuit so as to transmit ultrasonic waves into a body, and, among echoes received by piezoelectric transducers, first the signals of the piezoelectric transducers are selected by amplified appropriately by amplifiers and converted into digital signals by added with delay by a beam former thereafter, and stored in a memory. Similarly, the ultrasonic waves are transmitted again, signals of the piezoelectric transducers are selected by the applied with similar signal processing in the amplifiers, and the beam former, and added to signals added with delay of the piezoelectric transducers T3 to T6 stored in a memory 16 by an adder. The added signals are displayed on a display unit after applying signal processing such as detection in a signal processing portion.
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