| Home | E-Submission | Sitemap | Contact Us |  
top_img
J Radiat Prot > Volume 21(4);1996 > Article
Journal of Radiation Protection 1996;21(4):263.
말단팬텀에서 X-선 빔의 방향의존성에 관한 이론적 계산
김종수;윤석철;김장렬;김광표;
A Theoretical Calculation for Angular Dependence of X-ray Beams on Extremity Phantom
Kim, Jong-Soo;Yoon, Suk-Chul;Kim, Jang-Lyul;Kim, Kwang-Pyo;
ABSTRACT
The ANSI N13.32 recommends that a study of the angular response of a dosimeter be carried out once, although no pass/fail criterion is given for angular response. Gamma dose equivalent conversion and angular dependence factors were calculated by using MCNP code for the case of ANSI N13.32 extremity phantoms(finger and arm) at the depth of $7mg/cm^2$. Those extremity dosimeters were assumed to be irradiated from both monoenergitic photons and ISO X-ray narrow beams. These calculated gamma dose equivalent conversion and angular dependence factors were compared to B. Grosswendt's result calculated by using X-ray beams. The result showed that the dose equivalent conversion factors of this study agreed well with that of B. Grosswendt for all energies within 2% except 7% in the case of the low energies. In the case of angular dependence factors comparison, they agreed within 3%. It was shown that angular dependence factors of the finger phantom decreased as the horizontal angle of the phantom increased for the ISO X-ray beams less than 60keV. For the higher energy X-ray beams range they decreased slightly around 40 degree, but then increased from this energy to 90 degree.
TOOLS
PDF Links  PDF Links
Full text via DOI  Full text via DOI
Download Citation  Download Citation
Supplement  Supplement
  E-Mail
Share:      
METRICS
417
View
0
Download
Theoretical Calculation on Alpha Track Density by Using an Electrostatic Ion Spectrometer  1993 ;18(1)
Editorial Office
319, HIT, 22-2, Majo-ro, Seongdong-gu, Seoul 133-791, Korea
Tel: +82-2-2297-9775   Fax: +82-2-2297-9776
About |  Browse Articles |  Current Issue |  For Authors and Reviewers
Copyright © by Korean Association for Radiation Protection. All rights reserved.      Developed in M2Community