from march 1976 to october 1977 , 197 cases of brain tumors were examined by ct , 6 tumors ( 1 pineal tumor , 2 cerebellar vermian tumors and 3 supratentorial tumors ) of which were radiated after the initial ct scan and re-examined by ct at every 400-1,000 rads radiation , and their grade of radiosensitivity could be evaluated .
C0006118
of brain tumors
C0031941
pineal tumor