کاسه ساز, یاسر
سازمان انرژی اتمی ایران
[ 1 ] - بررسی و اندازه‌گیری دز پرتوهای نوترون ثانویه در پرتودرمانی با اشعۀ ایکس پرانرژی در بیمارستان آیت‌الله خوانساری اراک
Medical linear accelerators (linacs) are used efficiently in radiation therapy for tumor treatments. In these devices interaction of high energy photons (greater than 7 MeV) with the target, flattening filters, collimators and even body and patients bed produce secondary particles such as neutrons(photo-neutron production). The purpose of this study is measuring the neutrons dose produced in me...
[ 2 ] - بهینه سازی طیف نوترونی در بیم تیوب شمال غربی راکتور تحقیقاتی تهران جهت استفاده در روش درمانی نوترون تراپی با بور، توسط کد محاسباتی مونت کارلو
In order to gain the neutron spectrum with proper components specification for BNCT, it is necessary to design a Beam Shape Assembling (BSA), including moderator, collimator, reflector, gamma filter and thermal neutrons filter, in front of the initial radiation beam from the source. According to the result of MCNP4Csimulation, the Northwest beam tube has the most optimized neutron flux between ...
[ 3 ] - Evaluation of the gray level in CBCT systems and its relationship with HU in CT Scanners
Introduction: Cone-beam CT (CBCT) is an imaging system which offers three-dimensional (3D), multiplanar images and has many advantages over computed tomography (CT) including shorter acquisition times for the resolution desired in dentistry, lower radiation dose to the patient, reasonable price and higher spatial resolution but CBCT scanners are unable to display actual Hounsf...
[ 4 ] - Evaluation of the effective dose during PBFT for brain cancer: A Monte Carlo Study
Introduction: Recently, an approach exploiting the proton therapy biological enhancement by using Boron atoms injected inside a tumor, has been proposed. Three alpha particles with an average energy around 4MeV are emitted from the point of reaction between a proton and boron. In addition, the 719 keV prompt gamma emitted by the proton Boron fusion reactions can be used for on-...
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