Ultrasonic therapeutic device

An ultrasonic therapeutic apparatus comprising:

• at least one ultrasonic transducer for treatment based on high intensity focused ultrasound therapy;
• an ultrasonic probe;
• and
• a controller configured to control the ultrasonic transducer and the ultrasonic probe, wherein
• the controller is configured to execute:
• therapeutic ultrasound transmitting processing for causing the ultrasonic transducer to transmit therapeutic ultrasonic waves to a body tissue;
• irradiated-region image generating processing for causing the ultrasonic probe to transmit a plurality of ultrasonic waves at different times and different phases, and combining a plurality of received signals based on the plurality of ultrasonic waves reflected by the body tissue and received by the ultrasonic probe to thereby generate irradiated-region data based on harmonic components based on the respective received signals, and
• B-mode image generating processing for generating B-mode image data of the body tissue by using one of the plurality of received signals received by the ultrasonic probe, wherein
• the controller is further configured to cause the display device to display a treatment amount distribution image based on a treatment amount determined from irradiation in the irradiated-region data, the treatment amount distribution image indicating pixels that represent body tissue with a greater brightness as the treatment amount increases,
• wherein the controller is further configured to:
• detect a movement of the body tissue based on the B-mode image data sequentially generated over time;
• specify a patient coordinate system fixed to the body tissue based on the B-mode image data sequentially generated over time;
• and
• determine the treatment amount at each of locations in the patient coordinate system fixed to the body tissue, based on each of the irradiated region data corresponding to the respective B-mode image data, the treatment amount being based on a pixel value of the irradiated region data at each of the locations in the patient coordinate system.