A Monte Carlo Interstitial Brachytherapy Study for AAPM TG-43 Dose Calculation Formalism in Heterogeneous Media

Author

Song, Gang ; Wu, Yican

Author_Institution

Gang Song Inst. of Plasma Phys., Chinese Acad. of Sci., Hefei

fYear

2008

Firstpage

1005

Lastpage

1008

Abstract

The precision of AAPM TG-43 dose calculation formalism in heterogeneous media has been studied based on the survey and evaluation of the status of interstitial brachytherapy. After a brief introduction of radioactive seeds (¹²⁵I, ¹⁹²Ir and ¹⁰³Pd) and AAPM TG-43 formalism, the radial dose rates calculated by Monte Carlo code MCNP-4C and TG-43 formalism were compared with homogeneous and heterogeneous phantoms. The reason of errors between the results of the above two methods was analyzed, and modified dose rates constant were proposed and testified. With the updated dose rates constant, AAPM TG-43 formalism can predict the dose rate distribution accurately and rapidly in clinical.

Keywords

Monte Carlo methods; brachytherapy; dosimetry; phantoms; AAPMTG-43 dose calculation formalism; Monte Carlo code MCNP-4C; Monte Carlo interstitial brachytherapy; heterogeneous phantom; homogeneous phantom; radioactive seeds; Biological tissues; Bones; Brachytherapy; Imaging phantoms; Implants; Monte Carlo methods; Neoplasms; Nonhomogeneous media; Nuclear and plasma sciences; Physics;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioinformatics and Biomedical Engineering, 2008. ICBBE 2008. The 2nd International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-1747-6

Electronic_ISBN

978-1-4244-1748-3

Type

conf

DOI

10.1109/ICBBE.2008.246

Filename

4535126