An ultrasound diagnosis apparatus according to an embodiment includes an input unit and a selecting unit. The input unit receives a group of ultrasound images corresponding to at least one heart beat from among a group of ultrasound images corresponding to a plurality of heart beats of a subject, as first partial data. While using a heart rate of the subject during the acquisition period of the first partial data as a reference heart rate, the selecting unit selects a group of ultrasound images having a heart rate within a predetermined range from the reference heart rate as second partial data, out of a group of ultrasound images of the subject acquired in a time frame different from that of the first partial data.
