Korean J Med Phys.  2011 Sep;22(3):124-130.

Absorbed Dose Determination for a Biological Sample Irradiated by Gamma Rays from a Cs-137 Source

Affiliations
  • 1Research Center, Dongnam Inst. of Radiological & Medical Sciences, Busan, Korea.
  • 2Department of Radiation Oncology, Dongnam Inst. of Radiological & Medical Sciences, Busan, Korea. physics7@empal.com

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.

Keyword

Gamma Irradiator; Dosimetry; Monte Carlo Calculation

MeSH Terms

Axis, Cervical Vertebra
Gamma Rays
Water
Water
Full Text Links
  • KJMP
Actions
Cited
CITED
export Copy
Close
Share
  • Twitter
  • Facebook
Similar articles
Copyright © 2024 by Korean Association of Medical Journal Editors. All rights reserved.     E-mail: koreamed@kamje.or.kr