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Does Electron Spectrum Affect TLD-100 Dose Response in 6 MV Photon Beam Irradiation?

Year 2022, Volume 43, Issue 3, 504 - 509, 30.09.2022
https://doi.org/10.17776/csj.1086868

Abstract

In this study, the electron spectrum effect on the TLD-100 dosimeter response to a 6 MV photon beam in different media like water, aluminum, polystyrene, iron, copper, and lead using Monte Carlo and Burlin cavity theory was evaluated. To calculate and compare the dose to medium to dose to cavity correction factors (f), the electronic equilibrium spectrum produced by the 6 MV photon beam and its maximum electron energy in different media were used. The electronic equilibrium spectra were obtained using Beamdp Monte Carlo Simulation. Using two different methods, the cavity theory was applied to obtain the response of the TLD-100 to 6 MV photon beam in the media considered. In the first method, the average mass collision stopping power ratios and the average mass effective attenuation coefficients were calculated using the electron spectrum of 6 MV. In the second method, these parameters were calculated based on the maximum energy value of 6 MV. The maximum difference between the f values obtained using the two methods was about 10 % for lead, while it was less than 2.5 % for other media. Consequently, the differences between f factors calculated using these two methods were insignificant except for lead. 

References

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Year 2022, Volume 43, Issue 3, 504 - 509, 30.09.2022
https://doi.org/10.17776/csj.1086868

Abstract

References

  • [1] Chen R. and Leung P. L., Nonlinear dose dependence and dose-rate dependence of optically stimulated luminescence and thermoluminescence, Radiation Measurements, 33 (5) (2001) 475-481.
  • [2] Montaño-García C. and Gamboa-deBuen I., Measurements of the optical density and the thermoluminescent response of LiF:Mg,Ti exposed to high doses of 60Co gamma rays, Radiation Protection Dosimetry, 119 (1-4) (2006) 230-2.
  • [3] Hsi W. C., Fagundes M., Zeidan O., Hug E., and Schreuder N., Image-guided method for TLD-based in vivo rectal dose verification with endorectal balloon in proton therapy for prostate cancer, Medical Physics, 40 (5) (2013) 051715.
  • [4] Liuzzi R., Savino F., D’Avino V., Pugliese M., and Cella L., Evaluation of LiF:Mg,Ti (TLD-100) for Intraoperative Electron Radiation Therapy Quality Assurance, PLoS ONE, 10 (10) (2015) 0139287.
  • [5] Carlsson G. A., Theoretical Basis for Dosimetry, 1 st ed. USA: Academıc Press, Inc., (1985) 2-77.
  • [6] Haraldsson P., Knöös T., Nyström H., and Engström P., Monte Carlo study of TLD measurements in air cavities, Physics in Medicine and Biology, 48 (18) (2003) 253-9.
  • [7] Ma C. M. and Li J., Dose specification for radiation therapy: Dose to water or dose to medium?, Physics in Medicine and Biology, 56 (10) (2011) 3073-89.
  • [8] Alashrah S., Kandaiya S., Maalej N., and El-Taher A., Skin dose measurements using radiochromic films, TLDs and ionisation chamber and comparison with Monte Carlo simulation, Radiation Protection Dosimetry, 162 (3) (2014) 338-44.
  • [9] Mobit P. N., Nahum A. E., and Mayles P., An EGS4 Monte Carlo examination of general cavity theory An EGS4 Monte Carlo examination of general cavity theory, Physics in Medicine and Biology, 42 (7) (1997) 1319-34
  • [10] Silva H., An analysis of the electron spectrum effect on LiF response to cobalt-60 gamma-rays, Nuclear Inst. and Methods in Physics Research B, 44 (1989) 166-171.
  • [11] Davis S. D., High Sensitivity Lithium Fluoride As a Detector for Environmental Dosimetry, M.Sc Thesis, McGill University, Medical Physics Unit, (2003).
  • [12] Burlin T. E., A general theory of cavity ionisation, The British Journal of Radiology, 39 (466) (1966) 727-34.
  • [13] Sarigul N., Surucu M., Reft C., Yegingil Z., and Aydogan B., Examination of general cavity theory for magnesium and titanium doped lithium fluoride (TLD-100) of varying thicknesses in bone and lung, Radiation Measurements, 94 (2016) 1-7.
  • [14] Horowitz Y. S., Photon general cavity theory, Radiation Protection Dosimetry, 9 (1) (1984) 5-18.
  • [15] Attix F. H., Introduction to Radiological Physics and Radiation Dosimetry, 2nd ed.New York: Wiley-VCH, (1986).
  • [16] Edwards C. R. and Mountford P. J., Near surface photon energy spectra outside a 6 MV field edge, Physics in Medicine and Biology, 49 (18) (2004) 293-301.
  • [17] Evans R. D., The Atomic Nucleus, 1 st edition, NewDelhi: Tata McGraw-Hill, (1955).
  • [18] Loevinger R., The dosimetry of beta sources in tissue; the point-source function, Radiology, 66 (1) (1956) 55-62.
  • [19] Burlin T. E. and Chan F. K., The effect of the wall on the Fricke dosemeter, The International Journal of Applied Radiation and Isotopes, 20 (11) (1969) 767-775.
  • [20] Janssens A., Eggermont G., Jacobs R., and Thielens G., Spectrum perturbation and energy deposition models for stopping power ratio calculations in general cavity theory, Physics in Medicine and Biology,19 (5) (1974) 619-30.
  • [21] Paliwal B. R. and Almond P. R., Applications of cavity theories for electrons to LiF dosemeters, Physics in Medicine and Biology, 20 (4) (1975) 547–58.
  • [22] Podgorsak E. B. and Kainz K., Radiation Oncology Physics: A Handbook for Teachers and Students, Medical Physics, 33 (6) (2006) 1920.
  • [23] Berger M.J., Coursey J.S., Zucker M.A., and Chang J., ESTAR, PSTAR, and ASTAR: Computer Programs for Calculating Stopping-Power and Range Tables for Electrons, Protons, and Helium Ions (version 1.2.3), National Institute of Standards and Technology, Available at: http://physics.nist.gov/PhysRefData/Star/Text/ESTAR.html Retrived April 7, 2022.
  • [24] Hubbel J. H. and Seltzer S. M., Tables of X-Ray Mass Attenuation Coefficients and Mass Energy-Absorption Coefficients (version 1.4), National Institute of Standards and Technology, Available: https://www.nist.gov/pml/x-ray-mass-attenuation-coefficients Retrived April 7, 2022
  • [25] Bull R. K., Stopping powers for electrons and positrons, International Journal of Radiation Applications and Instrumentation. Part D. Nuclear Tracks and Radiation Measurements, 11 (4-5) (1986) 273.
  • [26] Horowitz Y. S., The theoretical and microdosimetric basis of thermoluminescence and applications to dosimetry., Physics in Medicine and Biology, 26 (5) (1981) 765–824.

Details

Primary Language English
Subjects Physics, Multidisciplinary
Journal Section Natural Sciences
Authors

Neslihan SARIGÜL> (Primary Author)
HACETTEPE ÜNİVERSİTESİ
0000-0002-5371-7924
Türkiye

Publication Date September 30, 2022
Application Date March 12, 2022
Acceptance Date June 29, 2022
Published in Issue Year 2022, Volume 43, Issue 3

Cite

APA Sarıgül, N. (2022). Does Electron Spectrum Affect TLD-100 Dose Response in 6 MV Photon Beam Irradiation? . Cumhuriyet Science Journal , 43 (3) , 504-509 . DOI: 10.17776/csj.1086868