Absorbed Dose Determination for a Biological Sample Irradiated by Gamma Rays from a Cs-137 Source.
- Author:
Dong Hyeok JEONG
1
;
Jeung Kee KIM
;
Kwang Mo YANG
;
Min Su JU
;
Min Young KIM
;
Chang Yeol LEE
;
Jin Ho KIM
Author Information
1. Research Center, Dongnam Inst. of Radiological & Medical Sciences, Busan, Korea.
- Publication Type:Original Article
- Keywords:
Gamma Irradiator;
Dosimetry;
Monte Carlo Calculation
- MeSH:
Axis, Cervical Vertebra;
Gamma Rays;
Water
- From:Korean Journal of Medical Physics
2011;22(3):124-130
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
In this study the dosimetric evaluation for a biological sample irradiated by gamma rays from Cs-137 irradiator (Gamma Irradiator, Chiyoda Technol Co., Japan) was performed for radiobiological experiment. A spherical water with a diameter of 3 cm was assumed as a biological sample. The absorbed dose were determined by the air kerma based dosimetric calculation system. The theoretical and Monte Carlo calculations (MCNPX) were performed and compared to evaluate measured air kerma and determined absorbed dose respectively. As a result of comparison with theoretical calculation, the measured air kerma was in good agreement within 3.1% at the distance of 100 and 200 cm from the source. In comparison with Monte Carlo results the determined absorbed dose along the central axis was in good agreement within 1.9% and 3.7% at 100 cm and 200 cm respectively. Although the preliminary results were obtained in this study these results were used as a basis of dosimetric evaluation for radiobiological experiment. Extended study will be performed to evaluate the dose in various conditions of biological samples.
