A COMPARATIVE MONTE CARLO STUDY ON 6MV PHOTON BEAM CHARACTERISTICS OF VARIAN 21EX AND ELEKTA SL-25 LINACS

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MESBAHI A.; MEHNATI P.; KESHTKAR A.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

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Journal: International Journal of Radiation Research Year:2007 | Volume:5 | Issue:1 Page(s): 23-30

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Title

A COMPARATIVE MONTE CARLO STUDY ON 6MV PHOTON BEAM CHARACTERISTICS OF VARIAN 21EX AND ELEKTA SL-25 LINACS

Author(s)

MESBAHI A. | MEHNATI P. | KESHTKAR A. | Issue Writer Certificate

Keywords

DOSIMETRIC FEATURES

ELEKTA SL-25

VARIAN 21EX

MONTE CARLO METHOD

Abstract

Background: MONTE CARLO METHOD (MC) has played an important role in design and optimization of medical linacs head and beam modeling. The purpose of this study was to compare photon beam features of two commercial linacs, VARIAN 21EX and ELEKTA SL-25 using MCNP4C MC code. Materials and Methods: The 6MV photon beams of VARIAN 21EX and Elekta Sl- 25 linacs were simulated based on manufacturers provided information. Photon energy spectra and absolute absorbed dose values were calculated for field sizes of 10×10 and 20×20 cm2. Also, contamination electron spectra for field size of 20×20 cm2 were scored for both linacs. Results: Our results showed that the relative absorbed dose values and contamination electron spectrum were similar and comparable, but photon fluence and absolute absorbed dose values were 17% and 13% higher for Varian linac respectively for the field size of 10×10 cm2. Conclusion: Despite the differences in head components of two commercial linacs, their relative depth dose values were very close to each other. The absolute dose per incident electron showed some discrepancy, as well. Thus, this study suggests the use of absolute absorbed dose values as an invaluable factor when different linacs head are compared using MONTE CARLO METHOD.

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APA: Copy

MESBAHI, A., MEHNATI, P., & KESHTKAR, A.. (2007). A COMPARATIVE MONTE CARLO STUDY ON 6MV PHOTON BEAM CHARACTERISTICS OF VARIAN 21EX AND ELEKTA SL-25 LINACS. INTERNATIONAL JOURNAL OF RADIATION RESEARCH, 5(1), 23-30. SID. https://sid.ir/paper/286413/en

Vancouver: Copy

MESBAHI A., MEHNATI P., KESHTKAR A.. A COMPARATIVE MONTE CARLO STUDY ON 6MV PHOTON BEAM CHARACTERISTICS OF VARIAN 21EX AND ELEKTA SL-25 LINACS. INTERNATIONAL JOURNAL OF RADIATION RESEARCH[Internet]. 2007;5(1):23-30. Available from: https://sid.ir/paper/286413/en

IEEE: Copy

A. MESBAHI, P. MEHNATI, and A. KESHTKAR, “A COMPARATIVE MONTE CARLO STUDY ON 6MV PHOTON BEAM CHARACTERISTICS OF VARIAN 21EX AND ELEKTA SL-25 LINACS,” INTERNATIONAL JOURNAL OF RADIATION RESEARCH, vol. 5, no. 1, pp. 23–30, 2007, [Online]. Available: https://sid.ir/paper/286413/en

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