ULTRASOUND DIAGNOSTIC SYSTEM AND ULTRASOUND DIAGNOSTIC METHOD

An ultrasound diagnostic system according to the present invention includes a plurality of elements that are arranged around a test object and that emit and receive ultrasound, a control unit that performs control such that at least one of the elements emits ultrasound and at least some of the elements receive scattered waves, a collection unit that collects measurement data, which are data obtained from the elements that have received the scattered waves, a calculation unit that calculates, for a plurality of division regions into which an imaging region including at least a portion of the test object is divided, a scattered sound pressure intensity of each division region on the basis of a first factor and a second factor of the division region, the first factor being constituted by arrival times which are each a period from emission to reception of ultrasound that is emitted from a predetermined element, scattered by the test object in the division region, and received by a corresponding one of the plurality of elements, the second factor being constituted by the measurement data, and an image generation unit that generates a scattering image by converting the scattered sound pressure intensity of each division region into a pixel value.