근접방사선치료 시 몬테카를로 전산모사를 이용한 인체전산팬텀의 우측 폐와 주변 장기 선량평가

• 영문명: Evaluation of Absorbed Dose for the Right Lung and Surrounding Organs of the Computational Human Phantom in Brachytherapy by Monte Carlo Simulation
• 발행기관: 대한방사선과학회(구 대한방사선기술학회)
• 저자명: 이준성(Lee Jun-Seong) 김양수(Kim Yang-Soo) 김민걸(Kim Min-Gul) 김정수(Kim Jung-Soo) 이선영(Lee Sun-Young)
• 간행물 정보: 『방사선기술과학』방사선기술과학 제43권 제6호, 443~451쪽, 전체 9쪽
• 주제분류: 의약학 > 방사선과학
• 파일형태: PDF
• 발행일자: 2020.12.31

영문 초록

This study is to evaluate absorbed dose from right lung for brachytherapy and to estimate the effects of tissue heterogeneities on dose distribution for Iridium-192 source using Monte Carlo simulation. The study employed Geant4 code as Monte Carlo simulation to calculate the dosimetry parameters. The dose distribution of Iridium-192 source in solid water equivalent phantom including aluminium plate or steel plate inserted was calculated and compared with the measured dose by the ion chamber at various distances. And the simulation was used to evaluate the dose of gamma radiation absorbed in the lung organ and other organs around it. The dose distribution embedded in right lung was calculated due to the presence of heart, thymus, spine, stomach as well as left lung. The geometry of the human body was made up of adult male MIRD type of the computational human phantom. The dosimetric characteristics obtained for aluminium plate inserted were in good agreement with experimental results within 4%. The simulation results of steel plate inserted agreed well with a maximum difference 2.75%. Target organ considered to receive a dose of 100%, the surrounding organs were left the left lung of 3.93%, heart of 10.04%, thymus of 11.19%, spine of 12.64% and stomach of 0.95%. When the statistical error is performed for the computational human phantom, the statistical error of value is under 1%.

목차

Ⅰ. 서 론

Ⅱ. 대상 및 방법

Ⅲ. 결 과

Ⅳ. 고 찰

Ⅴ. 결 론

REFERENCES

키워드

몬테카를로 전산모사 인체전산팬텀 선량측정 근접방사선치료 이리듐-192 선원 Monte Carlo simulation Computational human phantom Dosimetry Brachytherapy Iridium-192 source