title: AAPM TG-43 formalism for brachytherapy dose calculation of a 137Cs tube source.
abstract: We present a development of the use of the AAPM TG-43 dose formalism applied to 137Cs gynecological implant sources. The geometry factor, radial dose function, and anisotropy function of a 137Cs source modeled after the Nuclear Associates 67-809 series stainless steel jacketed tube source were derived following the AAPM TG-43 formalism. The dose rate distribution through the center of the source using the AAPM TG-43 dose formalism is calculated and compared with the calculations obtained using the Sievert summation and Monte Carlo simulation. The three methods resulted in an agreement within less than 5%, or an isodose rate line agreement within 2 mm. We demonstrate that the AAPM TG-43 formalism can be applied to 137Cs linear sources and is capable of serving as a 137Cs dose calculation algorithm that can be used for treatment planning purpose.
authors.affiliation: Department of Radiation Oncology, Columbia University, New York, New York 10032, USA. pz2010@columbia.edu
authors.forename: Pengpeng
authors.initials: P
authors.lastname: Zhang
authors.forename: A Sam
authors.initials: AS
authors.lastname: Beddar
authors.forename: Claudio H
authors.initials: CH
authors.lastname: Sibata
mesh_terms: D001918:Brachytherapy / Q000295:instrumentation / Q000379:methods* / Q000592:standards*; D002588:Cesium Radioisotopes / Q000592:standards / Q000627:therapeutic use*; D005260:Female; D005833:Genital Neoplasms, Female / Q000532:radiotherapy*; D006801:Humans; D009683:Nuclear Medicine / Q000592:standards; D011874:Radiometry / Q000379:methods* / Q000592:standards; D019275:Radiopharmaceuticals / Q000592:standards / Q000627:therapeutic use; D011879:Radiotherapy Dosage; D011880:Radiotherapy Planning, Computer-Assisted / Q000379:methods* / Q000592:standards*; D012958:Societies, Scientific / Q000592:standards; D014481:United States
chemical_list: D002588:Cesium Radioisotopes; D019275:Radiopharmaceuticals