CSs of x-ray tube, no protective housing. Various shots in hospital radiology rooms, of boy being wheeled out of room. DOLLY IN to Geiger counter registering presence of small amount of radiation from sun through window. Shots of technician at x-ray control panel flipping switches, pressing x-ray release button, of technician positioning patient in front of sensitized plate. CS of x-ray lens, PAN to man's torso in front of plate, of technician placing plate in wall container, removing fresh plate. DOLLY IN, DOLLY OUT of chest x-ray pictures. CSs of man drinking radioactive iodine. Shots of man lying under radiation tracer machine, marker tracing location of radioactive traces in man's throat onto paper. CSs of paper showing location of infection in throat.