EVALUATING THE PHOTON CONTAMINATION OF BEAM SHAPER APPLICATOR USING MONTE CARLO SIMULATION

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HEIDARLOO NEMATOLLAH; BAGHANI HAMIDREZA; AGHAMIRI SEYED MAHMOUD REZA; MAHDAVI SEYED RABI

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Journal: JOURNAL OF MAZANDARAN UNIVERSITY OF MEDICAL SCIENCES Year:2016 | Volume:26 | Issue:140 Page(s): 212-217

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Title

EVALUATING THE PHOTON CONTAMINATION OF BEAM SHAPER APPLICATOR USING MONTE CARLO SIMULATION

Author(s)

HEIDARLOO NEMATOLLAH | BAGHANI HAMIDREZA | AGHAMIRI SEYED MAHMOUD REZA | MAHDAVI SEYED RABI | Issue Writer Certificate

Keywords

INTRAOPERATIVE RADIOTHERAPYQ1

PHOTON CONTAMINATIONQ1

BEAM SHAPER APPLICATORQ1

MONTE CARLO SIMULATIONQ2

Abstract

Background and purpose: Beam shaper is a type of applicator used in conjunction with the intraoperative electron radiotherapy. This study aimed at quantitative evaluation of the PHOTON CONTAMINATION of this applicator using MONTE CARLO SIMULATION.Materials and methods: In this experimental study, at first the head of LIAC accelerator was simulated along with the BEAM SHAPER APPLICATOR using MCNPX Monte Carlo code. Validity of the simulated model was evaluated by comparing the percentage depth dose curves obtained by MONTE CARLO SIMULATION and practical dosimetry. Finally, the PHOTON CONTAMINATION at different clinical field sizes and electron energies was quantitatively determined.Results: The results showed that by increase in field size, the PHOTON CONTAMINATION of the BEAM SHAPER APPLICATOR was considerably decreased. Furthermore, increment of electron energy could increase the PHOTON CONTAMINATION.Conclusion: Increasing the PHOTON CONTAMINATION at the phantom surface by increment of electron energy and decrement of field size can be attributed to increasing the probability of electron interaction with the steel blades of the beam shaper and production of bremsstrahlung radiation at higher energies. Due to the PHOTON CONTAMINATION, employing the BEAM SHAPER APPLICATOR can increase the surface dose.

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APA: Copy

HEIDARLOO, NEMATOLLAH, BAGHANI, HAMIDREZA, AGHAMIRI, SEYED MAHMOUD REZA, & MAHDAVI, SEYED RABI. (2016). EVALUATING THE PHOTON CONTAMINATION OF BEAM SHAPER APPLICATOR USING MONTE CARLO SIMULATION. JOURNAL OF MAZANDARAN UNIVERSITY OF MEDICAL SCIENCES, 26(140), 212-217. SID. https://sid.ir/paper/44453/en

Vancouver: Copy

HEIDARLOO NEMATOLLAH, BAGHANI HAMIDREZA, AGHAMIRI SEYED MAHMOUD REZA, MAHDAVI SEYED RABI. EVALUATING THE PHOTON CONTAMINATION OF BEAM SHAPER APPLICATOR USING MONTE CARLO SIMULATION. JOURNAL OF MAZANDARAN UNIVERSITY OF MEDICAL SCIENCES[Internet]. 2016;26(140):212-217. Available from: https://sid.ir/paper/44453/en

IEEE: Copy

NEMATOLLAH HEIDARLOO, HAMIDREZA BAGHANI, SEYED MAHMOUD REZA AGHAMIRI, and SEYED RABI MAHDAVI, “EVALUATING THE PHOTON CONTAMINATION OF BEAM SHAPER APPLICATOR USING MONTE CARLO SIMULATION,” JOURNAL OF MAZANDARAN UNIVERSITY OF MEDICAL SCIENCES, vol. 26, no. 140, pp. 212–217, 2016, [Online]. Available: https://sid.ir/paper/44453/en

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