title: Cerebral radiation surgery with narrow gamma beams; physical experiments.
mesh_terms: D001921:Brain / Q000528:radiation effects*; D003037:Cobalt Radioisotopes; D005720:Gamma Rays / Q000627:therapeutic use; D006801:Humans; D008433:Mathematics; D008962:Models, Theoretical; D011829:Radiation Dosage; D011834:Radiation Monitoring
chemical_list: D003037:Cobalt Radioisotopes