Title :
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
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;
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
DOI :
10.1109/ICBBE.2008.246
