Skip to main content

Advertisement

SpringerLink
Log in

Evaluation of the effect of tooth and dental restoration material on electron dose distribution and production of photon contamination in electron beam radiotherapy

  • Scientific Paper
  • Published:
Australasian Physical & Engineering Sciences in Medicine Aims and scope Submit manuscript

Abstract

The aim of this study is to evaluate the effect of tooth and dental restoration materials on electron dose distribution and photon contamination production in electron beams of a medical linac. This evaluation was performed on 8, 12 and 14 MeV electron beams of a Siemens Primus linac. MCNPX Monte Carlo code was utilized and a 10 × 10 cm2 applicator was simulated in the cases of tooth and combinations of tooth and Ceramco C3 ceramic veneer, tooth and Eclipse alloy and tooth and amalgam restoration materials in a soft tissue phantom. The relative electron and photon contamination doses were calculated for these materials. The presence of tooth and dental restoration material changed the electron dose distribution and photon contamination in phantom, depending on the type of the restoration material and electron beam’s energy. The maximum relative electron dose was 1.07 in the presence of tooth including amalgam for 14 MeV electron beam. When 100.00 cGy was prescribed for the reference point, the maximum absolute electron dose was 105.10 cGy in the presence of amalgam for 12 MeV electron beam and the maximum absolute photon contamination dose was 376.67 μGy for tooth in 14 MeV electron beam. The change in electron dose distribution should be considered in treatment planning, when teeth are irradiated in electron beam radiotherapy. If treatment planning can be performed in such a way that the teeth are excluded from primary irradiation, the potential errors in dose delivery to the tumour and normal tissues can be avoided.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6

Similar content being viewed by others

References

  1. Reitemeier B, Reitemeier G, Schmidt A, Schaal W, Blochberger P, Lehmann D, Herrmann T (2002) Evaluation of a device for attenuation of electron release from dental restorations in a therapeutic radiation field. J Prosthet Dent 87(3):323–327

    Article  CAS  PubMed  Google Scholar 

  2. Bjelkengren U (2007) Absorbed dose distributions in the vicinity of high-density materials in head and neck radiotherapy: a quantitative comparison between measurements, Monte Carlo simulations and treatment planning system. MSc Thesis in Medical Radiation Physics Clinical Science, Lund University. http://www.lunduniversity.lu.se/o.o.i.s?id=24965&postid=2157049

  3. Farahani M, Eichmiller FC, McLaughlin WL (1990) Measurement of absorbed doses near metal and dental material interfaces irradiated by X- and gamma-ray therapy beams. Phys Med Biol 35(3):369–385

    Article  CAS  PubMed  Google Scholar 

  4. Chin DW, Treister N, Friedland B, Cormack RA, Tishler RB, Makrigiorgos GM et al (2009) Effect of dental restorations and prostheses on radiotherapy dose distribution: a Monte Carlo study. J Appl Clin Med Phys 10(1):80–89

    Article  Google Scholar 

  5. Abdul Aziz MZ, Yusoff AL, Salikin MS (2011) Monte Carlo electron beam dose distribution near high density inhomogeneities interfaces. World Acad Sci Eng Technol 58:338–341

    Google Scholar 

  6. Shiu AS, Hogstrom KR (1991) Dose in bone and tissue near bone-tissue interface from electron beam. Int J Radiat Oncol Biol Phys 21(3):695–702

    Article  CAS  PubMed  Google Scholar 

  7. Bahreyni Toossi MT, Ghorbani M, Akbari F, Sobhkhiz Sabet L, Mehrpouyan M (2013) Monte Carlo modeling of electron modes of a Siemens Primus linac (8, 12 and 14 MeV). J Radiother Pract 12(4):352–359

    Article  Google Scholar 

  8. Waters LS. MCNPX user’s manual, version 2.4.0. Report LA-CP-02-408 2002; Los Alamos National Laboratory

  9. The International Commission on Radiation Units and Measurements. Tissue substitutes in radiation dosimetry and measurement. ICRU Report 44. Bethesda, MD (1989)

  10. Shved VA, Shishkina EA (2000) Assessment of tooth tissues dose rate coefficients from incorporated strontium-90 in EPR dose reconstruction for the Techa Riverside population. In: Harmonization of radiation, human life and the ecosystem, Proceedings of 10th international congress on radiation protection. International Radiation Protection Association, Hiroshima; CD-ROM; Paper No. P-3a-212

  11. National Institute of Standards and Technology (NIST) (2014) http://physics.nist.gov/cgi-bin/Star/edata.pl

  12. National Institute of Standards and Technology (NIST) (2014) http://physics.nist.gov/PhysRefData/XrayMassCoef/ComTab/tissue.html

  13. el-Khatib EE, Scrimger J, Murray B (1991) Reduction of the Bremsstrahlung component of clinical electron beams: implications for electron arc therapy and total skin electron irradiation. Phys Med Biol 36(1):111–118

    Article  CAS  PubMed  Google Scholar 

  14. Sharma AK, Supe SS, Anantha N, Subbarangaiah K (1995) Physical characteristics of photon and electron beams from a dual energy linear accelerator. Med Dosim 20(1):55–66

    Article  CAS  PubMed  Google Scholar 

Download references

Acknowledgments

The authors would like to thank Mashhad University of Medical Sciences (MUMS) for funding this work.

Author information

Authors and Affiliations

  1. Medical Physics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran

    Mohammad Taghi Bahreyni Toossi & Mahdi Ghorbani

  2. Medical Physics Department, Reza Radiation Oncology Center, Mashhad, Iran

    Fatemeh Akbari & Leila Sobhkhiz Sabet

  3. Bioinformatics Research Center, Sabzevar University of Medical Sciences, Sabzevar, Iran

    Mohammad Mehrpouyan

  4. Radiology and Radiotherapy Department, Faculty of Medicine, Sabzevar University of Medical Sciences, Sabzevar, Iran

    Mohammad Mehrpouyan

Authors
  1. Mohammad Taghi Bahreyni Toossi
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Mahdi Ghorbani
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Fatemeh Akbari
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Mohammad Mehrpouyan
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Leila Sobhkhiz Sabet
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding authors

Correspondence to Mahdi Ghorbani or Mohammad Mehrpouyan.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Bahreyni Toossi, M.T., Ghorbani, M., Akbari, F. et al. Evaluation of the effect of tooth and dental restoration material on electron dose distribution and production of photon contamination in electron beam radiotherapy. Australas Phys Eng Sci Med 39, 113–122 (2016). https://doi.org/10.1007/s13246-015-0404-z

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s13246-015-0404-z

Keywords

Search

Navigation