PROBLEM TO BE SOLVED: To provide an ultrasonic therapeutic system capable of carrying out accurate diagnosis and treatment while being noninvasive by forming a stereoscopic image of an organ or the like by using an existing ultrasonic image forming apparatus, and easily adjusting therapeutic ultrasonic waves to an irradiation object.SOLUTION: A blood vessel 1601 is reproduced in a virtual three-dimensional space with a three-dimensional stereoscopic image, and a transducer unit 113 is used to form and guide aggregates 1606 of micro bubbles to a part 1604 to be treated. The aggregates 1604 are collected to a desired site in the blood vessel 1601 to form a thrombus, and cells of the part 1604 to be treated is necrosed to achieve cancer treatment using neither chemical drug nor radiation.
