This ultrasound diagnostic apparatus is an ultrasound diagnostic apparatus that is configured to allow connection of a probe having a transducer and which performs prescribed measurement processing on a measured object site in a subject. The apparatus is equipped with a controller that: generates multiple image frames by driving the probe and performing at multiple different times, transmission processing, which transmits ultrasonic waves into the subject comprising the measured object site, and received signal processing, which generates frames that are configured from received signals based on ultrasonic waves reflected from the subject comprising the measured object site and received by the probe selects at least two or more measured object frames that will serve as the measured object from among the multiple frames extracts measureable regions in which the measurement processing is possible based on the various received signals from the measured object site contained in the at least two or more measured object frames and performs the specified measurement processing on the measured object site by combining the measureable regions.Lappareil de diagnostic à ultrasons ci-décrit est un appareil de diagnostic à ultrasons qui est conçu pour permettre le raccordement dune sonde équipée dun transducteur et qui applique le traitement de mesure prescrit à lendroit faisant lobjet de la mesure chez le sujet. Lappareil est équipé dun contrôleur qui : génère de multiples trames dimages par commande de la sonde et exécution, à de multiples temps différents, dun traitement de transmission, qui transmet des ondes ultrasonores au sujet, dont lendroit faisant lobjet de la mesure, et dun traitement des signaux reçus, qui génère des trames qui sont configurées à partir des signaux reçus basés sur les ondes ultrasonores réfléchies par le sujet, dont lendroit faisant lobjet de la mesure, et reçues par la sonde sélectionne au moins deux trames de lobjet mesuré ou plus qui serviront do
