title: Cylindrical chamber dimensions and the corresponding values of Awall and Ngas/(NxAion).
abstract: Cylindrical ionization chamber descriptions and physical dimensions that are necessary for the calculation of Awall and Ngas are presented. Also included are the corresponding calculated values of Awall and Ngas/(NxAion).
mesh_terms: D006801:Humans; D011874:Radiometry / Q000295:instrumentation*; D011879:Radiotherapy Dosage