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Assessment of methods for estimation of effective atomic numbers of common human organ and tissue substitutes: waxes, plastics and polymers

Published online by Cambridge University Press:  19 February 2014

V. P. Singh ,
N.M. Badiger  and
N. Kucuk
V. P. Singh*
Affiliation:
Department of Physics, Karnatak University, Dharwad, 580003, India
N.M. Badiger
Affiliation:
Department of Physics, Karnatak University, Dharwad, 580003, India
N. Kucuk
Affiliation:
Department of Physics, Faculty of Arts and Sciences, Uludag University, 16059 Bursa, Turkey
*
akudphyvps@rediffmail.com
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Abstract

We calculated mass attenuation coefficients, effective atomic numbers and Kerma relative to air for human organ and tissue substitutes (i.e. wax, plastic and polymer materials). The effective atomic numbers of the tissue substitutes were calculated by the direct method, interpolation method, Auto-Zeff software and single value XMuDat program and then compared. The calculated effective atomic numbers were also compared with available experimental data and a good agreement was observed. A large difference in effective atomic numbers calculated by the direct and interpolation methods was observed in photoelectric and pair-production regions. The direct method was found to be appropriate for effective atomic number computation in low-(>10 keV) and medium-(0.1 ≤ E ≤ 10 MeV) photon energy regions. Kerma relative to air of the selected tissue substitutes was found to be dependent upon the atomic number and element compositions, which show a sharp peak due to K-edge absorption.

Keywords

waxplasticpolymereffective atomic numberCompton scatteringKerma
Type
Article
Information
Radioprotection , Volume 49 , Issue 2 , April 2014 , pp. 115 - 121
Copyright
© EDP Sciences, 2014

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References

Ashok, K., Sukhpal, S., Gurmel, S.M., Kulwant, S.T. (2007) Studies on Effective Atomic Numbers and Electron Densities in Some Commonly Used Solvents, Nucl. Sci. Eng. 155, 102-108. Google Scholar
Berger M.J., Hubbell J.H., Seltzer S.M., Chang J., Coursey J.S., Sukumar R., Zucker D.S., Olsen K. (2010) XCOM: photon cross sections database, NIST standard reference database (XGAM), http://www.nist.gov/pml/data/xcom/index.cfm.
Demir D., Tursucu A., Oznuluer T. (2012) Studies on mass attenuation coefficient, effective atomic number and electron densitiy of some vitamins, Radiat. Environ. Biophys. DOI: 10.1007/s00411-012-0427-8. CrossRef
Elias, S., Zainal, A.S., Anuar, A., Husin, W. (1983) Determination of effective atomic number of rubber, Pertanika 6, 95-98. Google Scholar
Ferreira, C.C., Ximenes, R.E., Garcia, C.A.B., Viera, J.W., Maia, A.F. (2010) Total mass attenuation coefficient evaluation of ten materials commonly used to simulate human tissue, J. Phys.: Conf. Ser. 249, 1-5. Google Scholar
Gerward, L., Guilbert, N., Jensen, K.B., Levring, H. (2004) WinXCom – a program for calculating X-ray attenuation coefficients, Radiat. Phys. Chem. 71, 653-654. Google Scholar
Hubbell, J.H. (1982) Photon mass attenuation and energy-absorption coefficients from 1 keV to 20 MeV, Int. J. Appl. Radiat. Isot. 33, 1269-1290. Google Scholar
ICRU (1989) International Commission on Radiation Units and Measurements. Tissue substitutes in radiation dosimetry and measurement, Report No. 44, Bethesda, MD.
Jackson, D.F., Hawkers, D.J. (1981) X-ray attenuation coefficient of the elements and mixtures, Phys. Rep. 70, 169-233. Google Scholar
Kiran, T.K., Venkata, K.R. (1997) Effective atomic numbers for materials of dosimetric interest, Radiat. Phys. Chem. 50 (6), 545-553. Google Scholar
Koç, N., Özyol, H. (2000) Z-dependence of partial and total photon interactions in some biological samples, Radiat. Phys. Chem. 59, 339-345. Google Scholar
Kucuk, N., Cakir, M., Isitman, N.A. (2013) Mass attenuation coefficients, effective atomic numbers and effective electron densities for some polymers, Radiat. Prot. Dosim. 153 (1), 127-134. Google ScholarPubMed
Kulwant, S., Gagandeep, K., Sandhu, G.K., Lark, B.S. (2001) Interaction of photons with some solutions, Radiat. Phys. Chem. 61, 537-540. Google Scholar
Manjunathguru, V., Umesh, T.K. (2006) Effective atomic number and electron densities of some biologically important compounds containing H, C, N and O in energy range 145-1330 keV, J. Phys. B 39, 3969-3981. Google Scholar
Manohara, S.R., Hanagodimath, S.M., Thind, K.S., Gerward, L. (2008) On the effective atomic number and electron density: A comprehensive set of formulas for all types of materials and energies above 1 keV, Nucl. Instrum. Meth. Phys. Res. B 266, 3906-3912. Google Scholar
Michael, E.W. et al. (2013) Atomic weight of elements 2011 (IUPAC Technical Report), Pure Appl. Chem. 85 (05), 1047-1078. Google Scholar
Murat, K., Yuksel, O. (2011) Energy absorption and exposure buildup factors for some polymer and tissue substitute materials: photon energy, penetration depth and chemical composition dependency, J. Radiol. Prot. 31, 117-128. Google Scholar
Nowotny R. (1998) XMuDat: Photon attenuation data on PC. IAEA-NDS-195, Vienna, Austria. Available on http://www-nds.iaea.org/publications/iaea-nds/iaea-nds-0195.htm.
Parthsaradhi, K., Esposito, A., Pelliccioni, M. (1992) Photon attenuation coefficients in tissue equivalent compound, Appl. Radiat. Isotopes 43 (12), 1481-1484. Google Scholar
Prasanna, K.S., Manjunathguru, V., Umesh, T.K. (2010) Effective atomic numbers of some H-, C-, O- based composite materials derived from differential incoherent scattering cross section, Pramana 74 (4), 555-562. Google Scholar
Shivalinge, G., Krishnaveni, S., Ramakrishna, G. (2005) Studies on effective atomic numbers and electron densities in amino acids and sugars in the energy range 30-1333 keV, Nucl. Instr. Meth. Phys. Res. B 239 (4), 361-369. Google Scholar
Shivaramu, R., Vijayakumar, L., Rajasekaran, N.R. (2001) Effective atomic numbers for photon energy absorption of some low-Z substances of dosimetric interest, Radiat. Phys. Chem. 62, 371-377. Google Scholar
Singh, V.P., Badiger, N.M. (2012) Effective atomic numbers, electron densities and tissue equivalence of some gases and mixtures for dosimetry of radiation detectors, Nuclear Technology & Radiation Protection 27 (2), 117-124. Google Scholar
Singh, V.P., Badiger, N.M. (2013) Study of effective atomic numbers and electron densities, kerma of alcohols: phantom and human organ tissue substitues, Nuclear Technology & Radiation Protection, 28 (2), 137-145 Google Scholar
Taylor, M.L., Smith, R.L., Dossing, F., Franich, R.D. (2012) Robust calculation of effective atomic numbers: The Auto-Zeff software, Med. Phys. 39, 1769-1778. Google Scholar
Tejbir, S., Naresh, K., Parjit, S.S. (2009) Chemical composition dependency of exposure buildup factors for some polymers, Ann. Nucl. Eng. 36, 114-120. Google Scholar
Tejbir, S., Rajni Updesh, K., Parjit, S.S. (2010) Photon energy absorption parameters for some polymers, Ann. Nucl. Eng. 37, 422-427. Google Scholar