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An analytic approach to the dosimetry of a new BEBIG 60 Co high-dose-rate brachytherapy source
- Source :
- Journal of Medical Physics, Vol 37, Iss 3, Pp 129-137 (2012), Journal of Medical Physics / Association of Medical Physicists of India
- Publication Year :
- 2012
- Publisher :
- Wolters Kluwer Medknow Publications, 2012.
-
Abstract
- We present a simple analytic tool for calculating the dose rate distribution in water for a new BEBIG high-dose-rate (HDR) (60)Co brachytherapy source. In the analytic tool, we consider the active source as a point located at the geometric center of the (60)Co material. The influence of the activity distribution in the active volume of the source is taken into account separately by use of the line source-based geometric function. The exponential attenuation of primary (60)Co photons by the source materials ((60)Co and stainless-steel) is included in the model. The model utilizes the point-source-based function, f(r) that represents the combined effect of the exponential attenuation and scattered photons in water. We derived this function by using the published radial dose function for a point (60)Co source in an unbounded water medium of radius 50 cm. The attenuation coefficients for (60)Co and the stainless-steel encapsulation materials are deduced as best-fit parameters that minimize the different.
- Subjects :
- lcsh:Medical physics. Medical radiology. Nuclear medicine
Mathematical optimization
treatment planning
Geometric function theory
monte carlo
Attenuation
medicine.medical_treatment
lcsh:R895-920
Monte Carlo method
Brachytherapy
brachytherapy
high-dose-rate
Biophysics
Line source
High-Dose Rate Brachytherapy
Computational physics
Exponential function
medicine
Analytic method
Dosimetry
Radiology, Nuclear Medicine and imaging
Original Article
Mathematics
Subjects
Details
- Language :
- English
- ISSN :
- 19983913 and 09716203
- Volume :
- 37
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- Journal of Medical Physics
- Accession number :
- edsair.doi.dedup.....c47a7993153223df34cd8d53daed2278