title: [Experience with a double dose-monitoring system in the 18 MeV betatron therapy (author's transl)].
abstract: Correct setting of the patient dose within a range of about +/- 3% is only achieved if a second exposure monitoring system controls the output variations of a betatron beam. A sealed thimble chamber attached in the centre of the field on the patient, which switches off the betatron when a given exposure has exceeded proved as a safe device.
mesh_terms: D006801:Humans; D008991:Monitoring, Physiologic; D011879:Radiotherapy Dosage; D011882:Radiotherapy, High-Energy / Q000379:methods*
vernacular_title: Erfahrungen mit einem Doppel-Dosismonitorsystem für die 18 MeV Betatrontherapie