PDD ́s Reconstruction of the Linear Accelerator Varian 2100C for Photons Beams of the 6MV and 10MV Using MCNP-4C Code
نویسنده
چکیده
A great challenge in simulations in the area of radiotherapy is to character the source, since the equipment’s manufacturers don’t provide specifics information about this. This work presents an empiric method for characterization of the ray-X beams of 6,0 MV and 10 MV originating from a linear accelerator of the mark Varian model 2100C. The experimental values of the percentage of deep dose (PDD) were used for reconstruction of the energy spectrum and analysis of the angular distribution of the beam simulated with Monte Carlo's Method, using the code MCNP-4C. The results were shown solid could be used for the space reconstruction of the beam. Keywords— PDD reconstruction, Monte Carlo method, MCNP, medical physics.
منابع مشابه
Investigations of parameters affecting the photon energy spectra of an 18 MV Varian 2100C/D linear accelerator
Radiotherapy using linear accelerators is known as an effective modality for cancer treatment. The photons energy of treatment beams significantly affect the dose distribution. Therefore, it is important to accurately evaluate the photon energy spectra. In this study, MCNPX Monte Carlo code (version 2.6.0) was used to simulate an 18 MV photon beam of a Varian 2100C/D linear accelerator. By matc...
متن کاملتخمین آسیب DNA بافت بدن ناشی از دز تابشهای یونیزان در میدانهای بزرگ شتابدهنده خطی 6 مگاولتی فوتونی
Recent studies suggest that relative biological damage (RBD) may change from in to out of field regions for 6 MV photon beams. In this study RBD was calculated in and out of field of 30x30 cm2 and 40x40 cm2 6 MV clinical photon beams including low energy slowing down electrons in track length estimated method. Varian 2100C/D linear accelerator was simulated using MCNPX code. Electron and photon...
متن کاملCalculating weighting factors for mixing megavoltage photon beams to achieve desirable dose distribution in Radiotherapy
Introduction: Many studies have shown the effects of delivered dose distribution due to the incident photon energy on the tumor and healthy tissues. The ability to access the most appropriate radiation energy is essential to achieve the optimal treatment planning but there is a serious limitation in number of energies available on radiation therapy machines can restrict it. <s...
متن کاملSU-E-T-110: Development of An Independent, Monte Carlo, Dose Calculation, Quality Assurance Tool for Clinical Trials.
PURPOSE To develop a comprehensive end-to-end test for Varian's TrueBeam linear accelerator for head and neck IMRT using a custom phantom designed to utilize multiple dosimetry devices. PURPOSE To commission a multiple-source Monte Carlo model of Elekta linear accelerator beams of nominal energies 6MV and 10MV. METHODS A three source, Monte Carlo model of Elekta 6 and 10MV therapeutic x-ray...
متن کاملDevelopement a simple point source model for Elekta SL-25 linear accelerator using MCNP4C Monte Carlo code
Background: Monte Carlo (MC) modeling of a linear accelerator is a prerequisite for Monte Carlo dose calculations in external beam radiotherapy. In this study, a simple and efficient model was developed for Elekta SL-25 linear accelerator using MCNP4C Monte Carlo code Materials and methods: The head of Elekta SL-25 linac was simulated for 6 and 18 MV photon beams using MCNP4C MC code. Energ...
متن کامل