VALIDATION OF THE LINAC VARIAN SIMULATED USING BEAMNRC CODE FOR 6MV PHOTON ENERGY

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CHEGENI NAHID; ABOLMAALI AL HOSSEINI KHADIJEH; SHAHBAZIAN HOJATTOLLAH; MASKANI REZA; HOSEINI GHAFAROKHI MOJTABA; MIRKHAGHANI FARZANEH; RAJA ESKANDARI SOUDABEH

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Journal: Jundishapur Scientific Medical Journal Year:2016 | Volume:15 | Issue:5 Page(s): 551-561

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Title

VALIDATION OF THE LINAC VARIAN SIMULATED USING BEAMNRC CODE FOR 6MV PHOTON ENERGY

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Keywords

RADIOTHERAPYQ3

VALIDATIONQ2

MEGAQ1

VOLTAGE PHOTON BEAMSQ1

BEAMNRC SIMULATIONQ2

LINEAR ACCELERATORQ2

Abstract

Background and Objective: Simulation using Monte Carlo technique is a practical method for assessment of the characteristics of the clinical photon beam from the treatment head. The accuracy of the simulation results is based on the VALIDATION of the Monte Carlo models used in the calculation. This study validated the simulation with BEAMnrc code for 6MV energy.Subjects and Methods: The accelerators of Varian Clinic 2100C/D for photon beam 6MV were simulated using the BEAMnrc code system. A cylindrical mono energetic with 5.7, 5.9, 6 MV energies and 1, 2, 3 mm radius were applied. Two phase space files were scored below the exit window and above the phantom then analyzed the beam characteristics using BEAMdp and calculated the percentage depth dose and profile at 10cm using DOSXYZ code. In this work, measurements were performed using 0.13 cc ion chamber inside a water phantom with dimension 50×50×50cm3. At the end of simulation, the results of the measured data were compared using gamma index with criteria 2%/2mm.Result: By increasing the electron energy, percentage depth dose in buildup region was reduced and became closer to measurements. With increasing the diameter of the electron source, the photons were diverged and the edges of the profiles showed a sharp drop compared to the dose measurements.Conclusion: Finally good agreement (gamma index within2%/2mm) between the measurements and simulations was achieved for field sizes of 4×4 ,10×10 and 30×30cm2 with radial of incident electrons 0.2cm at source surface distances of 100cm.

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APA: Copy

CHEGENI, NAHID, ABOLMAALI AL HOSSEINI, KHADIJEH, SHAHBAZIAN, HOJATTOLLAH, MASKANI, REZA, HOSEINI GHAFAROKHI, MOJTABA, MIRKHAGHANI, FARZANEH, & RAJA ESKANDARI, SOUDABEH. (2016). VALIDATION OF THE LINAC VARIAN SIMULATED USING BEAMNRC CODE FOR 6MV PHOTON ENERGY. JUNDISHAPUR SCIENTIFIC MEDICAL JOURNAL, 15(5), 551-561. SID. https://sid.ir/paper/12656/en

Vancouver: Copy

CHEGENI NAHID, ABOLMAALI AL HOSSEINI KHADIJEH, SHAHBAZIAN HOJATTOLLAH, MASKANI REZA, HOSEINI GHAFAROKHI MOJTABA, MIRKHAGHANI FARZANEH, RAJA ESKANDARI SOUDABEH. VALIDATION OF THE LINAC VARIAN SIMULATED USING BEAMNRC CODE FOR 6MV PHOTON ENERGY. JUNDISHAPUR SCIENTIFIC MEDICAL JOURNAL[Internet]. 2016;15(5):551-561. Available from: https://sid.ir/paper/12656/en

IEEE: Copy

NAHID CHEGENI, KHADIJEH ABOLMAALI AL HOSSEINI, HOJATTOLLAH SHAHBAZIAN, REZA MASKANI, MOJTABA HOSEINI GHAFAROKHI, FARZANEH MIRKHAGHANI, and SOUDABEH RAJA ESKANDARI, “VALIDATION OF THE LINAC VARIAN SIMULATED USING BEAMNRC CODE FOR 6MV PHOTON ENERGY,” JUNDISHAPUR SCIENTIFIC MEDICAL JOURNAL, vol. 15, no. 5, pp. 551–561, 2016, [Online]. Available: https://sid.ir/paper/12656/en

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