title: Dosimetry of an endocavitory treatment system.
abstract: The dosimetric properties of an x-ray applicator system for the treatment of rectal carcinoma by endocavitory contact therapy are discussed. Half-value layer, percent depth dose, field flatness, and output dose rate were evaluated. Film was used to evaluate field flatness and ionization chambers were used to evaluate the other quantities. The methods of measurement and their results are discussed.
mesh_terms: D001918:Brachytherapy / Q000295:instrumentation*; D006801:Humans; D011874:Radiometry / Q000295:instrumentation; D011879:Radiotherapy Dosage; D012004:Rectal Neoplasms / Q000532:radiotherapy*