FIELD: medicine at location of malignant tumors in the patient's body and for effect on them with the aid of X-radiation. SUBSTANCE: the methods include detection of the presence of gadolinium in the tissues and organs of the human body, used at precise definition of the malignant tumor and radial effect on this tumor for damage of its cells. For determination of the defined location of the malignant tumor revealed as a result of the previous diagnosis the parts of the patient's body are subjected to scanning, in which this tumor is located after injection of gadolinium in the patient's organism. Scanning is carried out by displacing the zone of radiation concentration produced by intersection of several X-ray beams with the radiant energy corresponding to the K-edge of absorption of the atoms of gadolinium. The defined information is obtained with the aid of detectors sensitive to Kα-radiation of the atoms of gadolinium, to which the secondary radiation arising in the zone of concentration is transported. Then, the area of location of the malignant tumor is scanned with the aid of the same- means as in the first stage. The sources of X-radiation with the aid of a control member are shifted to the mode of increased intensity sufficient for radiation injury of the tissues of the malignant tumor. For transmission of the radiation of the sources to the area of concentration and of the secondary radiation to the detectors use is made of various combinations of collimators, roentgen lenses and half-lenses, forming a roentgeno-optical system together with the sources and detectors. EFFECT: enhanced accuracy of aiming due to the use of the same X-ray beams both for a malignant focus, and for beam action on the focus. 30 cl, 11 dwg
