[Radiographic precision centering apparatus in telecobaltotherapy].
D003035:Cobalt; D003037:Cobalt Radioisotopes; D004864:Equipment and Supplies; D006801:Humans; D011878:Radiotherapy / Q000600:supply & distribution*
D003037:Cobalt Radioisotopes; D003035:Cobalt
COBALT/radioactive; RADIOTHERAPY/equipment and supplies