title: Dosimetry of 137Cs sources with the Fletcher-Suit gynecological applicator.
abstract: Measurements were made in water about the tandem and ovoid structures of the Fletcher-Suit applicator loaded with a 137Cs source. The dose rate was found to vary as much as 25% as a result of differential absorption in the ovoid. Empirically based trigonometric expressions are suggested which provide the absorption correction as a function of the two angles of a spherical coordinate system. Computer calculated dose rates, with and without the absorption corrections, are compared.
mesh_terms: D002588:Cesium Radioisotopes / Q000008:administration & dosage* / Q000627:therapeutic use; D005260:Female; D005833:Genital Neoplasms, Female / Q000532:radiotherapy*; D006801:Humans; D011879:Radiotherapy Dosage
chemical_list: D002588:Cesium Radioisotopes