Apparatus and method for compensating for respiratory and patient motion during treatment

(57) The 1st sensing device that generates periodically position data concerning summary book invention] an internal target domain, The 2nd sensing device that generates continuously the position data about one or more external sensors, That the correspondence relation between the position of an internal target domain and the position of an external sensor should be created so that it may be made towards the position of a patient's target domain based on the position data which medical treatment obtained from the external sensor, It is equipment with which breathing and other movements of the patient under medical treatment characterized by having a processor which receives the position data about an internal target domain and an external sensor are compensated.