Seyed Farhad Masoudi
Physics Department, K.N. Toosi University of Technology, Tehran, Iran
[ 1 ] - Simulation of the BNCT of Brain Tumors Using MCNP Code: Beam Designing and Dose Evaluation
Introduction BNCT is an effective method to destroy brain tumoral cells while sparing the healthy tissues. The recommended flux for epithermal neutrons is 109 n/cm2s, which has the most effectiveness on deep-seated tumors. In this paper, it is indicated that using D-T neutron source and optimizing of Beam Shaping Assembly (BSA) leads to treating brain tumors in a reasonable time where all IAEA ...
[ 2 ] - Dosimetry Comparison of Water Phantom and Complete Eye Definition for 125I and 103Pd Brachytherapy Plaques
Introduction: In this paper, by complete definition of human eye containing the various parts and their materials, the difference between this model and a homogeneous water phantom are compared for two ophthalmic plaques using 125I and 103Pd. Material and methods: The simulation of the two phantoms were performed in the MCNP-4C code and by using the geometry of a three-dimensional eye, differen...
[ 3 ] - مدلسازی تغییرات ضخامت لایه مرده در شبیهسازی MCNP آشکارساز HPGe جهت بهینهسازی محاسبه بازده شمارش نمونههای داخل ظرف مارینلی
In this research, a method for considering the spatial variation of deal layer (DL) thickness at the lateral and top surfaces of HPGe detectors is presented to achieve a more precise simulation model for efficiency calculation especially in marinelli beaker geometries. As a good approximation, the lateral surface of the detector is divided into 12 segments, assuming each segment covers 30 degre...
[ 4 ] - طراحی و بهینهسازی طیف نوترونی برای درمان تومورهای عمیق مغزی به روش BNCT با کاهش آسیب رسیده به پوست
Boron neutron capture therapy (BNCT) is an effective method for treatment of deep seated brain tumors. This method consists of two stages: injection of boron compound in the patient body, and then irradiation of the region tumors with the neutron beam. It allows for delivery of high linear energy transfer (LET) radiation (particles 4He and 7Li nuclei) to tumors at the cellular level whilst avoi...
[ 5 ] - Effects of Defining Realistic Compositions of the Ocular Melanoma on Proton Therapy
Background: Recent studies in eye plaque brachytherapy have shown a considerable difference between the dosimetric results using water phantom and a model of human eye containing realistic materials. In spite of this fact, there is a lack of simulation studies based on such a model in proton therapy literatures. In the presented work, the effect of utilizing an eye model with ocular media on pr...
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