Ultrasound diagnosis apparatus

An ultrasound diagnosis apparatus, comprising:

• an ultrasound transducer configured to transmit and receive ultrasound waves while being placed in an esophagus of a subject, to sequentially acquire cardiac function information of a heart of the subject;
• and
• processing circuitry configured to
• generate an image group over time based on the cardiac function information sequentially acquired;
• obtain an evaluation value for evaluating a function of tissue including the predetermined site based on the generated image group;
• determine whether the function of the tissue is abnormal, based on the evaluation value;
• and
• output information based on a result of the determination, wherein the processing circuitry is further configured to
• obtain, for the subject, a first image of a normal condition,
• obtain, for the subject, a reference evaluation value based on the first image of a normal condition,
• obtain, for the subject, a second image acquired after the first image,
• obtain, for the subject, a new evaluation value as a second evaluation value based on the second image,
• compare, for the subject, the second evaluation value with the reference evaluation value to determine whether the function of the tissue corresponding to the second evaluation value of the second image is abnormal, and
• repeat the obtaining of the second image, the obtaining of the second evaluation value, and the comparing of the second evaluation value to the reference evaluation value, for a sequence of second images.