The method obtains an ultrasonic diagnostic apparatus and an ultrasonic elastic image

A Upon acquisition of the elastic image of moving tissue, in response to variations in the displacement amount of the moving tissue, by selecting a suitable period to acquire elastic images, stably obtain the elastic images of high image quality. An ultrasonic probe for transmitting and receiving ultrasonic waves to and from the site comprising A of the subject moving tissue, the ultrasonic transmitting means for outputting an ultrasonic signal for driving the ultrasonic probe, ultrasonic elasticity information of a portion including a configuration image acquiring means for acquiring the form image from the reflected echo signals received wave by the probe representing the morphological information of the site containing the moving tissue, the moving tissue by using a plurality of data in the form image and an elastic image acquiring means for acquiring an elastic image representing a selection means for selecting the displacement amount detecting means for detecting a displacement amount of the moving tissue by using the form image data, the acquisition period of the elastic image based on the displacement amount, has, the elastic image acquisition means, and obtains an elastic image in the selected time period. .FIELD 1