Patent ID: 8398548

Claim:
An ultrasound diagnostic apparatus comprising: an ultrasound probe including a plurality of ultrasound transducers configured to transmit ultrasound to a subject and to receive the ultrasound reflected by the subject to output an element data; an arithmetical operation device configured to perform matching addition of element data of a plurality of divided apertures obtained by dividing an aperture provided in the ultrasound probe and on the basis of the element data output from the ultrasound transducers; and a determination device configured to determine a property of a reflector which reflects the ultrasound in the subject based on characteristics of an ultrasonic echo reflected by a minute structure or an ultrasonic echo reflected by a continuous surface detected in at least one of RF data and an amplitude image which are obtained by the matching addition of the element data of the divided apertures, or characteristics of an ultrasonic echo reflected by a speckle detected in the RF data.