Premium
AAPM TG‐43 formalism for brachytherapy dose calculation of a 137 Cs tube source
Author(s) -
Zhang Pengpeng,
Beddar A. Sam,
Sibata Claudio H.
Publication year - 2004
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.1650564
Subject(s) - brachytherapy , formalism (music) , monte carlo method , dosimetry , dose rate , physics , radiation treatment planning , nuclear medicine , computational physics , medical physics , mathematics , radiation therapy , medicine , radiology , statistics , art , musical , visual arts
We present a development of the use of the AAPM TG‐43 dose formalism applied to137 Cs gynecological implant sources. The geometry factor, radial dose function, and anisotropy function of a137 Cs 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 to137 Cs linear sources and is capable of serving as a137 Cs dose calculation algorithm that can be used for treatment planning purpose.