This ultrasonic diagnostic apparatus includes: a probe position information obtaining section which obtains information about the position of a probe that has gotten a received signal from each point a feature extracting and computing section which generates, based on the received signal with which the positional information has been associated, information to compose a three-dimensional image including a object of measurement a feature data comparing section which stores information to compose a three-dimensional image that was gotten in the past and information about the position of the object of measurement, of which the characteristic was measured in the past, compares the information to compose the three-dimensional image that was gotten in the past to information to compose a three-dimensional image being gotten currently, and gets the positional information of the object of measurement, of which the characteristic was measured in the past, incorporated into the information to compose the three-dimensional image being gotten currently and an image display processing section which performs processing to display a three-dimensional image based on the information to compose the three-dimensional image being gotten currently, the positional information of the object of measurement, of which the characteristic was measured in the past and which has been incorporated by the feature data comparing section, and information about the current position of the probe.
