SYSTEM FOR PATIENT RESPIRATORY GATED USING NATURAL BREATHING AND IRRADIATION THEREBY

摘要

The present invention relates to a patient respiratory gated system using natural breathing during a radiation therapy and a method for irradiating radiation thereby. The system of the present invention, in a respiratory gated system for irradiating radiation for the position of the subject of treatment changing following the breathing of a patient, comprises: a respiratory mask for measuring the breathing quantity of the patient; an external marker attached to an external triangulation point around the part to be treated of the patient; an image diagnosis unit for shooting an image of the part to be treated of the patient; and, a computer program which is made to calculate the changes in position of the subject to be treated according to the breathing quantity measured by a computerized tomography equipment and the external marker into position coordinates through a triangular position estimation method and a double polynomial equation and to transmit the position coordinates, which change in real time, to a radiation therapy system. The present invention lets the respiratory gated system irradiate radiation. The present invention can increase the accuracy and stability of total radiation therapy results by tracking the movements of the organ to be treated according to the breathing in real time through the respiratory gated system using natural breathing, which is not a breathing method taught by education and training of the patient.