Hostname: page-component-cd9895bd7-jn8rn Total loading time: 0 Render date: 2024-12-29T12:42:10.193Z Has data issue: false hasContentIssue false
  • English
  • Français

Different effective dose conversion coefficientsfor monoenergetic neutron fluence from 10-9 MeV to 20 MeV – A methodological comparative study

Published online by Cambridge University Press:  04 July 2012

H. Miri H. ,
L. Rafat M.  and
K. Karimi S.
H. Miri H.
Affiliation:
Physics department, school of sciences, Ferdowsi University of Mashhad, Iran
L. Rafat M.
Affiliation:
Physics department, school of sciences, Ferdowsi University of Mashhad, Iran
K. Karimi S.*
Affiliation:
Physics department, school of sciences, Ferdowsi University of Mashhad, Iran
*
Corresponding author: Karimi.keyhandokht@gmail.com
Get access

Abstract

Calculations are presented of the effective dosesper unit neutron fluence according to the ICRP publications 60 and 103.Monte Carlo N-Particle (MCNPX) code was used for six geometricalconditions of irradiation (Anterior-Posterior, Posterior-Anterior,Left-Lateral, Right-Lateral, Rotation and Isotropic) on Oak RidgeNational Laboratory (ORNL) modified mathematical adult phantomsfor monoenergetic neutrons from 10-9 MeV to 20 MeV. The conversioncoefficients were compared with the results of an analytical phantom(Medical Internal Radiation Dose (MIRD-5)) and some voxel model(ICRP/ICRU Reference Voxel Phantom (ICRP/ICRU RVP), HANAKO, TAROand Visible Human Project (VIPMAN)). From these comparisons, one canconclude that large discrepancies between data sets appear whenwR and different sizes of the phantoms have been used for calculations.Furthermore, the differences in applied Monte Carlo codes or simulatedbody models could make some discrepancies less than 15%.

Keywords

Neutron effective doseORNL modified phantomMonte Carlo codesconversion coefficients
Type
Research Article
Information
Radioprotection , Volume 47 , Issue 2 , April 2012 , pp. 271 - 284
Copyright
© EDP Sciences, 2012

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Alghamdi, A.A., Ma, A., Tzortzis, M., Spyrou, N.M. (2005) Neutron Fluence To Dose Conversion Coefficients In An Anthropomorphic Phantom, Radiat. Protect. Dosim. 115, 606-611.Google Scholar
Bozkurt, A., Chao, T.C., Xu, X.G. (2000) Fluence to dose conversion coefficients from monoenergetic neutrons below 20 MeV based on VIPMAN anatomical model, Phys. Med. Biol. 45, 3059-79.Google Scholar
Briesmeister J.F. (2000) Editor mcnptm – a general Monte Carlo N-particle transports code: version 4-C. Report LA-13709-M, Los Alamos National Laboratory. Los Alamos, NM, 1-427.
Cristy M. (1980) Mathematical phantoms representing children of various ages for use in estimates of internal dose. ORNL/NUREG/TM-367, Oak Ridge National Laboratory. Oak Ridge, TN.
Cristy M., Eckerman K.F. ( 1987) Specific absorbed fractions of energy at various ages from internal photon sources, Oak Ridge, TN: Oak Ridge National Laboratory. ORNL/TM-8381/V1.
Eckerman K.F., Cristy M., Ryman J.C. (1996) The ORNL mathematical phantom series, informal paper, OakRidge, TN:Oak Ridge National Laboratory. available at http://homer.hsr.ornl.gov/VLab/mird2.pdf
ICRP (1977) Publication 26, ICRP 1977, Oxford, Pergamon, 1-378.
ICRP (1987) Publication 51, Data for Use in Protection Against External Radiation, Oxford, Pergamon, 1-130.
ICRP (1991) Publication 60, Recommendations of ICRP. Oxford, Pergamon, 1-201.
ICRP (1995) Publication 74, Conversion Coefficients for use in Radiological Protection against External Radiation, Oxford, Pergamon, 1-205.
ICRP (2003) Publication 92, Relative Biological Effectiveness (RBE), Quality Factor (Q), and Radiation Weighting Factor (wR), Oxford, Pergamon, 1-121.
ICRP (2007) Publication 103, The 2007 Recommendations of ICRP, Elsevier, 1-332.
Lee, C., Lee, J.K. (2006) Computational Anthropomorphic For Radiation Protection Dosimetry: Evolution, Nucl. Eng. Technol. 38, 239-50. Google Scholar
Lee, C., Nagaoka, T., Lee, J.K. (2006) Implementation of Japanese Male and Female Tomographic Phantoms to Multi-particle Monte Carlo Code for Ionizing Radiation Dosimetry. J. Nucl. Sci. Tech. 43, 937-45.Google Scholar
Lee, C., Lee, C., Eun Young, H. (2007) Consideration of the ICRP 2006 revised tissue weighting factors on age-dependent values of the effective dose for external photons, Phys. Med. Biol. 52, 41-58.Google ScholarPubMed
Manger R.P., Bellamy M.B., Eckerman K.F. (2011) Dose Conversation Coefficients For Neutron Exposure To The Lens Of The Human Eye, Radiat. Prot. Dosim. 29 April: 1-7.
H. Miri, H., L. Rafat, M. (2007) Evaluation of specific absorbed fractions from internal photon sources in ORNL analytical adult phantom, Radiat. Prot. Dosim. 128, 427-31.Google Scholar
H. Miri, H., L. Rafat, M., K. Karimi, S. (2009) Assessment of neutron fluence to organ dose conversion coefficients in the ORNL analytical adult phantom, JRP, 29, 51-60.Google Scholar
Sato, T., Endo, A., Zankl, M. et al. (2009) Fluence-to-dose conversion coefficients for neutrons and protons calculated using the- PHITS code and ICRP/ICRU adult reference computational phantoms, Phys. Med. Biol. 54, 1997-2014.Google ScholarPubMed
Ulanovsky, A.V., Eckerman, K.F. (1998) Absorbed fractions for electron and photon emissions in the developing thyroid fetus to five years old, Radiat. Prot. Dosim. 79, 419–24.Google Scholar