Ultrasonic diagnostic apparatus and computer program product

An ultrasonic diagnostic apparatus comprising:

• an ultrasonic probe configured to send and receive ultrasonic waves;
• a region-of-interest setting unit that sets a region of interest to be included in an ultrasound image created based on reception data acquired by using an ultrasonic wave reflected from a subject;
• a receiving filter that separates a fundamental wave and one of a subharmonic wave and a higher harmonic wave from a same reception data;
• an inter-reception-data movement-amount calculating unit that calculates a movement amount of the region of interest set by the region-of-interest setting unit between fundamental waves each of which is separated by the receiving filter from each of reception data acquired by using an ultrasonic wave reflected from the subject at different times, as an inter-reception-data movement amount;
• a scan-region control unit that controls a scan region of an ultrasonic wave to be transmitted from the ultrasonic probe such that the scan region is to be shifted based on the inter-reception-data movement amount calculated by the inter-reception-data movement-amount calculating unit;
• an image creating unit that creates a plurality of ultrasound images along a time sequence based on one of subharmonic waves along the time sequence and higher harmonic waves along the time sequence separated by the receiving filter from reception data corresponding to an ultrasonic wave transmitted from the ultrasonic probe into the scan region shifted according to control by the scan-region control unit;
• and
• a display control unit that controls display of the ultrasound images along the time sequence created by the image creating unit on a predetermined display unit and controls display of the region of interest to remain at a same position on the predetermined display unit based upon the movement amount calculated by the inter-reception-data movement-amount calculating unit.