Mohammad Taghi Bahreyni Toossi1, Mehdi Momennezhad2, Seyed Mohammad Hashemi1. 1. Medical Physics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran. 2. Nuclear Medicine Research Center, Imam Reza Hospital, Mashhad University of Medical Sciences, Mashhad, Iran.
Abstract
AIM: Exact knowledge of dosimetric parameters is an essential pre-requisite of an effective treatment in radiotherapy. In order to fulfill this consideration, different techniques have been used, one of which is Monte Carlo simulation. MATERIALS AND METHODS: This study used the MCNP-4C to simulate electron beams from Neptun 10 PC medical linear accelerator. Output factors for 6, 8 and 10 MeV electrons applied to eleven different conventional fields were both measured and calculated. RESULTS: The measurements were carried out by a Wellhofler-Scanditronix dose scanning system. Our findings revealed that output factors acquired by MCNP-4C simulation and the corresponding values obtained by direct measurements are in a very good agreement. CONCLUSION: In general, very good consistency of simulated and measured results is a good proof that the goal of this work has been accomplished.
AIM: Exact knowledge of dosimetric parameters is an essential pre-requisite of an effective treatment in radiotherapy. In order to fulfill this consideration, different techniques have been used, one of which is Monte Carlo simulation. MATERIALS AND METHODS: This study used the MCNP-4C to simulate electron beams from Neptun 10 PC medical linear accelerator. Output factors for 6, 8 and 10 MeV electrons applied to eleven different conventional fields were both measured and calculated. RESULTS: The measurements were carried out by a Wellhofler-Scanditronix dose scanning system. Our findings revealed that output factors acquired by MCNP-4C simulation and the corresponding values obtained by direct measurements are in a very good agreement. CONCLUSION: In general, very good consistency of simulated and measured results is a good proof that the goal of this work has been accomplished.
Keywords:
Dosimetry; Linear accelerator; Monte Carlo; Simulation