An apparatus (10) for treating a brain tumor in patient, which includes an x-ray source (12, 14, 22) of preselected or preprogrammed duration and intensity assembled in combination with a reference frame (300). The reference frame (300) can be, for example, a stereotactic frame (300). The apparatus allows accurate positioning of the x-ray source (12, 14, 22) within or adjacent to the desired region to be irradiated in the brain of the patient.
LOW-POWER X-RAY SOURCE WITH IMPLANTABLE PROBE FOR TREATMENT OF BRAIN TUMORS