Using Monte Carlo Simulation to Calculate The Dose Reduction at The Maze Entrance of A Radiotherapy Room
Keywords:
Scattered photons, radiotherapy room, calculation of the dose at the maze, radiation protection, FLUKA Monte Carlo CodeAbstract
The aim of this study was to introduce a method to reduce the dose of the backscattered photons from a linear accelerator at the maze entrance of a radiotherapy room (RR). For this purpose a typical RR was designed and simulated using FLUKA Monte Carlo Code (version 2011.2b.1). The maze of a RR was the main focus for the study. Its walls including, floor and ceiling were lined with thin sheets of lead and stainless steel of 2 mm and 4 mm thicknesses respectively to find the most effective material and thickness for dose reducing. It was found that 2 mm lead sheet was able to reduce the dose at the maze entrance by more than 60 % and 4 mm 70 %. Whereas, 2 mm of stainless steel was able to reduce about 30% of the dose and 4 mm was able to reduce about 35%.
References
Al-Affan, I.M. and Smith C.W. (1996). Radiation quality of scattered photons at the maze entrance of radiotherapy rooms for photon beams of energy 0.5-30 MeV. Radiation Protection Dosimetry, 67, 299-302 Al-Affan, I.M., Smith, C.W., Morgan, N.H. and Lillicrap, S.C. (1998). Dose rate and energy distributions of X rays from a linear accelerator at maze entrance of a radiotherapy room by measurement and Monte Carlo simulation. Radiation Protection Dosimetry, 78, 273-277.
Al-Affan, I.M. (2000). Estimation of the dose at the maze entrance for X-rays from radiotherapy linear accelerators. Medical Physics, 27, 231-238.
Amin, M. (2014). Properties of a Some (Ag-Cu-Sn) Alloys for Shielding Against Gamma Rays. International Journal of Advanced Science and Technology, 63, 35-46.
Biggs, P,J. (1991). Calculation of Shielding Door Thicknesses for Radiation Therapy Facilities using the ITS Monte Carlo Program. Health Physics, 61, 465–472.
Biggs, P.J. (2010). Radiation shielding for megavoltage photon therapy machines. Boston: Massachusetts General Hospital and Harvard Medical School.
Carinou, E., Kamenopoulou, V. and Stamatelatos, I.E. (1999). Evaluation of neutron dose in the maze of medical electron accelerators. Medical Physics, 26, 2520−2525.
Ferrari, A., Sala, P.R., Fasso, A. and Ranft, J. (2011). Fluka: a multi-particle transport code [Online]. Available at: http://www.fluka.org/content/manuals/FM.pdf (Accessed: 2 February 2015).
Hall, E. (2005). Radiobiology for the Radiologist (6th ed.). Philadelphia: Lippincott Williams and Wilkins.
Ionisation Regulation Radiation (1991). Health and safety. London: The Stationery Office Limited.
James, A.D., James, E.R., Raymond, K.W., Peter, J.B., Patton, H.M., Richard, C.M. et al. (2005). Structural shielding and evaluation for megavoltage X- and gamma-ray radiotherapy facilities. Washington: NCRP.
Marcu, L., Allen, B. and Bezak, E. (2012). Biomedical physics in radiotherapy for cancer. Collingwood: CSIRO Publishing.
Ongaro, C., Rodenas, J., Leon, A., Perez, J., Zanini, A. and Burn, K. (1999). Monte carlo simulation and experimental evaluation of photoneuron spectra produced in medical linear accelerators. Proceedings of the 1999 Particle Accelerator Conference (pp. 2531 - 2533). New York, 27 March -02 April.
Xu, S. (2008) .A Novel Ultra-light Structure for Radiation Shielding. Master thesis, Carolina: North Carolina State University.
Al-Affan, I.M. (2000). Estimation of the dose at the maze entrance for X-rays from radiotherapy linear accelerators. Medical Physics, 27, 231-238.
Amin, M. (2014). Properties of a Some (Ag-Cu-Sn) Alloys for Shielding Against Gamma Rays. International Journal of Advanced Science and Technology, 63, 35-46.
Biggs, P,J. (1991). Calculation of Shielding Door Thicknesses for Radiation Therapy Facilities using the ITS Monte Carlo Program. Health Physics, 61, 465–472.
Biggs, P.J. (2010). Radiation shielding for megavoltage photon therapy machines. Boston: Massachusetts General Hospital and Harvard Medical School.
Carinou, E., Kamenopoulou, V. and Stamatelatos, I.E. (1999). Evaluation of neutron dose in the maze of medical electron accelerators. Medical Physics, 26, 2520−2525.
Ferrari, A., Sala, P.R., Fasso, A. and Ranft, J. (2011). Fluka: a multi-particle transport code [Online]. Available at: http://www.fluka.org/content/manuals/FM.pdf (Accessed: 2 February 2015).
Hall, E. (2005). Radiobiology for the Radiologist (6th ed.). Philadelphia: Lippincott Williams and Wilkins.
Ionisation Regulation Radiation (1991). Health and safety. London: The Stationery Office Limited.
James, A.D., James, E.R., Raymond, K.W., Peter, J.B., Patton, H.M., Richard, C.M. et al. (2005). Structural shielding and evaluation for megavoltage X- and gamma-ray radiotherapy facilities. Washington: NCRP.
Marcu, L., Allen, B. and Bezak, E. (2012). Biomedical physics in radiotherapy for cancer. Collingwood: CSIRO Publishing.
Ongaro, C., Rodenas, J., Leon, A., Perez, J., Zanini, A. and Burn, K. (1999). Monte carlo simulation and experimental evaluation of photoneuron spectra produced in medical linear accelerators. Proceedings of the 1999 Particle Accelerator Conference (pp. 2531 - 2533). New York, 27 March -02 April.
Xu, S. (2008) .A Novel Ultra-light Structure for Radiation Shielding. Master thesis, Carolina: North Carolina State University.
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Published
2014-12-30
How to Cite
Bari, D. S. (2014). Using Monte Carlo Simulation to Calculate The Dose Reduction at The Maze Entrance of A Radiotherapy Room. Science Journal of University of Zakho, 2(2), 375–381. Retrieved from https://sjuoz.uoz.edu.krd/index.php/sjuoz/article/view/258
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