An alternative technology for performing interstitial intracranial radiosurgery is presented. Treatments are performed intraoperatively using a stereotactically mounted, miniature X-ray device. A concentrated, spherical pattern of X-rays is generated about the tip of a needle-like probe, which is inserted into the site of the lesion allowing the absorbed dose to healthy tissue to be minimized. A description of the device is given and results of investigations into the operating characteristics discussed.
