Scatter dose model for therapeutic photon beams

Author

Nizin, Paul S. ; Mooij, Rob B.

Author_Institution

Dept. of Radiol., Baylor Coll. of Med., Houston, TX, USA

Volume

3

fYear

2000

fDate

6/22/1905 12:00:00 AM

Firstpage

1827

Abstract

The scatter component of an absorbed dose from therapeutic photon beams in water is studied using a model that treats the buildup and attenuation of scatter dose as separate phenomena. Monte Carlo simulated data for ⁶⁰Co and 15 MV photons are used as database for the study. A hypothesis on equal attenuation rate of primary and scatter dose in phantom material is formulated. A method and pertinent data are developed to examine a proposed hypothesis. It is shown that the attenuation of scatter dose with phantom depth can be described by the exponential function given. Thus, the results suggest that the assumption of equal attenuation rate for primary and scatter dose in phantom material is realistic

Keywords

X-ray scattering; dosimetry; gamma-ray scattering; modelling; radiation therapy; water; 15 MV; 15 MV photons; ⁶⁰Co photons; Co; H₂O; Monte Carlo simulated data; phantom depth; phantom material; primary dose; radiotherapy dosimetry; scatter dose model; therapeutic photon beams; Attenuation; Databases; Electromagnetic scattering; Gamma rays; Imaging phantoms; Monte Carlo methods; Particle scattering; Solid modeling; Surface treatment; X-ray scattering;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2000. Proceedings of the 22nd Annual International Conference of the IEEE

ISSN

1094-687X

Print_ISBN

0-7803-6465-1

Type

conf

DOI

10.1109/IEMBS.2000.900440

Filename

900440