Patent ID: RE38971

Claim:
An ultrasound diagnostic apparatus comprising: scanning means for repeatedly scanning a cross section of an examining human body having implanted bubbles as an ultrasonic shadowing agent with an ultrasound to collect an echo signal; image data obtaining means for repeatedly obtaining image data based on said echo signal; displaying means for displaying said obtained image data as a motion image; changing means for repeatedly changing power of said ultrasound from first power to second power stronger than said first power ; and and from the second power to the first power; storing means for selectively storing the image data obtained from the obtaining means during a time period in which the cross section of the examining body is scanned with the ultrasound of the second power ; and the motion image displayed by said displaying means being an image of ultrasonic shadowing agent flow as produced by the first power ultrasound, with the displayed motion image being reset by breaking of the implanted bubbles of the shadow agent upon application of ultrasound of the second power .