Patent ID: 8055036

Claim:
An ultrasonic diagnostic apparatus comprising: an ultrasonic probe for transmitting/receiving ultrasonic waves over a predetermined period of time between an object into which contrast medium is injected; transmission means for providing drive signals to the ultrasonic probe; reception means for receiving and processing the received signals outputted from the ultrasonic probe; signal processing means for processing the received signals outputted from the reception means; image processing means for constructing an ultrasonic image based on the signals outputted from the signal processing means; and display means for displaying the ultrasonic image, wherein: the signal processing means has means for detecting signal intensity and time variation quantity of the received signals outputted from the reception means for each frequency band, and the image processing means has means for determining whether the received signal is originating from the contrast medium or from the biological tissues based on the signal intensity and the time variation quantity of the received signal.