The paper is in continuation of the previous work in which the effect on Bragg peak position, range and penumbra width of proton beam in radiation therapy is observed when inhomogenities such as brain, kidney and thyroid are placed in a homogeneous medium. The human organs along with the positioning of the tumour region were designed and the suitable energy range for each tumour of the human organ was optimized. A significant shift in the Bragg peak position was observed in each case i.e., approx. -0.36% for muscular skeleton, -0.44% for soft tissue (S. Bhatnagar et.al, 2014) [1]. In this paper, we will discuss the significant effect of the absorbed dose of proton beam during treatment in different ages. Distinct phantom volumes with their respective organs i.e. brain, kidney and thyroid of children at various ages such as 0, 1, 5, 10, 15 years and also an adult are considered from OAK RIDGE NATIONAL LABORATORY (ORNL) report (M. Cristy et.al) [2] for present simulation study. The relation between dose equivalent, absorbed dose as function of depth to target volume is computed. We observed that the dose deposition is dependent on the age where patient at younger age receives dose at higher rate while it gradually decreases in the other cases i.e. 10 year, 15 year and adult. The step length of the particle is varied which imposes a limit during particle interaction in the medium per unit length. The obtained dose rate on varying the step length is compared among the Geant4 9.3 and 9.4 versions to observe its data accuracy.
보안공학연구지원센터(IJBSBT) [Science & Engineering Research Support Center, Republic of Korea(IJBSBT)]
설립연도
2006
분야
공학>컴퓨터학
소개
1. 보안공학에 대한 각종 조사 및 연구
2. 보안공학에 대한 응용기술 연구 및 발표
3. 보안공학에 관한 각종 학술 발표회 및 전시회 개최
4. 보안공학 기술의 상호 협조 및 정보교환
5. 보안공학에 관한 표준화 사업 및 규격의 제정
6. 보안공학에 관한 산학연 협동의 증진
7. 국제적 학술 교류 및 기술 협력
8. 보안공학에 관한 논문지 발간
9. 기타 본 회 목적 달성에 필요한 사업
간행물
간행물명
International Journal of Bio-Science and Bio-Technology
간기
격월간
pISSN
2233-7849
수록기간
2009~2016
등재여부
SCOPUS
십진분류
KDC 505DDC 605
이 권호 내 다른 논문 / International Journal of Bio-Science and Bio-Technology Vol.7 No.5