Ultrasound diagnosis apparatus and ultrasound diagnosis apparatus controlling method

An ultrasound diagnosis apparatus controlling method comprising:

• generating ultrasound images in a time series on a basis of data acquired by transmitting and receiving an ultrasound wave;
• performing, every time an ultrasound image satisfying a predetermined condition is generated, a position aligning process between the ultrasound image satisfying the predetermined condition and a reference image obtained in advance;
• and
• identifying, within the ultrasound image satisfying the predetermined condition, a region of interest set in the reference image, on a basis of a result of the position aligning process and tracking the region of interest in ultrasound images that are among ultrasound images in a time series newly generated during or after a most recent position aligning process and are other than the ultrasound image satisfying the predetermined condition, wherein
• the performing comprises performing the position aligning process between the ultrasound image satisfying the predetermined condition and the reference image by searching for a reference structure included in the reference image from the ultrasound image satisfying the predetermined condition, the reference structure being positioned at a region which is different from the region of interest set in the reference image.