title: [The unwanted secondary irradiation in the treatement chanber of a Siemens-42-MeV-betatron].
mesh_terms: D004781:Environmental Exposure; D006748:Hospital Departments; D006801:Humans; D011827:Radiation; D011835:Radiation Protection; D011874:Radiometry; D011879:Radiotherapy Dosage / Q000592:standards; D011882:Radiotherapy, High-Energy
vernacular_title: Die ungewollte Nebestrahlung im Bestrahlungsraum eines Siemens-42-Betatrons.