According to one embodiment, a ultrasound diagnostic apparatuses includes processing circuitry. The processing circuitry configured to obtain an ultrasonic image assigned with incidental information as imaging information, the incidental information including at least one of a body mark and a probe mark, calculate position specifying information for specifying an imaging position with respect to the ultrasonic image by performing image recognition of the incidental information assigned to the ultrasonic image, extract from a plurality of first images obtained in a past, a second image assigned with incidental information including position specifying information corresponding to the calculated position specifying information and display the second image.
