An ultrasound diagnostic apparatus according to an embodiment includes an extracting unit, a detecting unit, and a display controlling unit. The extracting unit extracts a cervical image region that is a region including the cervical region from an ultrasonic image of a fetus obtained by transmissions and receptions of ultrasonic waves. The detecting unit detects a dorsal body surface region that is a region that is related to a dorsal body surface of the fetus from the ultrasonic image. The display controlling unit controls to display an enlarged image including an enlarged image of the cervical image region in a region other than the dorsal region in the ultrasonic image on a display device.
