1. Ghiasi H and Mesbahi A (2012) A new analytical formula for neutron capture gamma dose calculations in double-bend mazes in radiation therapy. Reports of Practical Oncology and Radiotherapy, 17(4): 220-5. [DOI:10.1016/j.rpor.2012.03.011]

2. Alem-Bezoubiri A, Bezoubiri F, Badreddine A, Mazrou H, Lounis-Mokrani Z (2014) Monte Carlo estimation of photoneutrons spectra and dose equivalent around an 18MV medical linear accelerator. Radiation Physics and Chemistry, 97: 381-92. [DOI:10.1016/j.radphyschem.2013.07.013]

3. Banaee N, Goodarzi K, Nedaie HA (2021) Neutron contamination in radiotherapy processes: a review study. J Radiat Res, 62(6): 947-54. [DOI:10.1093/jrr/rrab076]

4. Rajesh KR, Ganapathi Raman RG, Musthafa MM, Midhun CV, Joseph N (2020) A passive method for absolute dose evaluation of photoneutrons in radiotherapy. Int J Radiat Res, 18(1): 173-178.

5. Ghiasi H (2014) Monte Carlo characterizations mapping of the (γ,n) and (n,γ) photonuclear reactions in the high energy X-ray radiation therapy. Reports of Practical Oncology and Radiotherapy, 19(1): 30-6. [DOI:10.1016/j.rpor.2013.07.003]

6. NCRP, National Council on Radiation Protection and Measurements (2006) Structural shielding design and evaluation for megavoltage X- and gamma-ray radiotherapy facilities. NCRP Report No. 151 NCRP, Bethesda, MD.

7. IAEA, The International Atomic Energy Ageny (2006) Radiation protection in the design of radiotherapy facilities. Reports series No. 47. Vienna.

8. Yücel H, Çobanbaş I, Kolbaşi A, Yüksel AÖ, Kaya V (2016) Measurement of photo-neutron dose from an 18-MV medical linac using a foil activation method in view of radiation protection of patients. Nuclear Engineering and Technology, 48(2): 525-32. [DOI:10.1016/j.net.2015.11.003]

9. Ghassoun J (2015) The effect of the presence of the patient on the particles dose estimations in high energy linear accelerator mazes. Int J Can Ther Oncol, 3(3): 3321. [DOI:10.14319/ijcto.33.21]

10. Ghassoun J and Senhou N (2012) The evaluation of neutron and gamma ray dose equivalent distributions in patients and the effectiveness of shield materials for high energy photons radiotherapy facilities. Appl Radiat Isot, 70(4): 620-4. [DOI:10.1016/j.apradiso.2011.12.041]

11. Ghassoun J, Senhou N, Jehouani A (2011) Neutron and photon doses in high energy radiotherapy facilities and evaluation of shielding performance by Monte Carlo method. Ann Nucl Energy, 38(10): 2163-7. [DOI:10.1016/j.anucene.2011.06.020]

12. Wang X, Esquivel C, Nes E, Shi C, Papanikolaou N, Charlton M (2011) The neutron dose equivalent evaluation and shielding at the maze entrance of a Varian Clinac 23EX treatment room. Med Phys, 38(3): 1141-9. [DOI:10.1118/1.3533713]

13. Afkham Y, Mesbahi A, Alemi A, Zolfagharpour F, Jabbari N (2020) Design and fabrication of a Nano-based neutron shield for fast neutrons from medical linear accelerators in radiation therapy. Radiat Oncol, 15: 105. [DOI:10.1186/s13014-020-01551-1]

14. Mesbahi A, Ghiasi H, Mahdavi SR (2010) Photoneutron and capture gamma dose equivalent for different room and maze layouts in radiation therapy. Radiat Prot Dosim, 140(3): 242-49. [DOI:10.1093/rpd/ncp303]

15. X-5 Monte Carlo Team (2005) MCNP-A general Monte Carlo N-particle transport code, Version 5. Los Alamos National Laboratory report LAUR-03-1987.

16. NCRP, National Council on Radiation Protection and Measurements (1971) Protection against neutron radiation. Report No. 38 Bethesda, Maryland.

17. ICRP, International Commission on Radiological Protection (1996) Conversion coefficients for use in radiological protection against external radiation. ICRP Publication 74, 26(3-4). ICRP, Ottawa, ON. [DOI:10.1016/S0146-6453(96)90003-2]

18. Simmons G (1978) Book Review: Structural shielding design and evaluation for medical use of X-Rays & gamma rays of energies up to 10 MeV. NCRP Report No. 49. Journal of Nuclear Medicine, 19(2): 228.

19. Eller LR (2012) An investigation on photoneutron production from medical linear accelerator. M.S. Oregon State University.

20. Tosi G and Torresin A (1991) neutron measurements around medical electron accelerators by active and passive detection techniques. Med Phys, 18(1): 54-60. [DOI:10.1118/1.596751]

21. Wu RK and Patton HM (2003) Neutron and capture gamma along the mazes of linear accelerator vaults. J Appl Clin Med Phys, 4(2): 162-71. [DOI:10.1120/jacmp.v4i2.2532]

22. Ivković A, Faj D, Galić S, Karimi A, Kasabašić M, Brkić H (2020) Accuracy of empirical formulas in evaluation of neutron dose equivalent inside the 60Co vaults reconstructed for medical linear accelerators1. Int J Radiat Res, 18(1): 99-107.

23. Followill DS, Stovall MS, Kry SF, Ibbott GS (2003) Neutron source strength measurements for Varian, Siemens, Elekta, and General Electric linear accelerators. J Appl Clin Med Phys, 4(3): 189-194. [DOI:10.1120/jacmp.v4i3.2514]

24. Facure A, Falcão RC, Silva AX, Crispim VR, Vitorelli JC. (2005) A study of neutron spectra from medical linear accelerators. Appl Radiat Isot, 62(1): 69-72. [DOI:10.1016/j.apradiso.2004.05.072]

25. McGinley PH, Butker EK (1991) Evaluation of neutron dose equivalent levels at the maze entrance of medical accelerator treatment rooms. Med Phys, 18(2): 279-81. [DOI:10.1118/1.596713]

26. Rivera J C, Falcao R C, deAlmeida C E (2008) The measurement of photoneutron dose in the vicinity of clinical linear accelerators. Radiation Protection Dosimetry, 130(4): 403-409. [DOI:10.1093/rpd/ncn065]

27. Mohammadi N, Miri-Hakimabad SH, Rafat-Motavalli L (2014) A Monte Carlo study for photoneutron dose estimations around the high-energy linacs. J Biomed Phys Eng, 4(4): 127-40.

28. Zabihzadeh M, Ay MR, Allahverdi M, Mesbahi A, Mahdavi SR, Shahriari M (2009) Monte Carlo estimation of photoneutrons contamination from high-energy X-ray medical accelerators in treatment room and maze: A simplified model. Radiat Prot Dosimetry, 135(1): 2. [DOI:10.1093/rpd/ncp097]

29. Suliman II, Khouqeer GA, Mayhoub FH (2023) Photoneutrons and Gamma Capture Dose Rates at the Maze Entrance of Varian TrueBeam and Elekta Versa HD medical linear accelerators. J Toxics, 11(1): 78. [DOI:10.3390/toxics11010078]

30. Naseri A and Mesbahi A (2010) A review on photoneutrons characteristics in radiation therapy with high-energy photon beams. Rep Pract Oncol Radiot, 15(5): 138-44. [DOI:10.1016/j.rpor.2010.08.003]

31. Chu WH, Lan JH, Chao TC, Lee CC, Tung CJ (2011) Neutron spectrometry and dosimetry around 15 MV linac. Radiation Measurements, 46(11): 1741-1744. [DOI:10.1016/j.radmeas.2011.06.029]

32. Kim YN, Choi SH, Jeong K, Kim JY, Lee CG, Seong J, Kim CH (2008) A study on optimization of photoneutron shielding in a medical accelerator room by using Monte Carlo simulation. Journal of Nuclear Science and Technology, 45(sup5): 50-53. [DOI:10.1080/00223131.2008.10875783]