Abolfazl Nickfarjam
Department of Medical Physics, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
[ 1 ] - Determination of Radionuclide Concentrations in Tea Samples Cultivated in Guilan Province, Iran
Introduction Foodstuffs are known to contain natural and artificial radionuclides. Determination of radionuclide concentration is of great significance for the protection of human health. The main objective of the present study was the quantification of radionuclides in tea samples, cultivated in Guilan Province in North of Iran. Materials and Methods The activity concentrations of 226Ra, 232Th...
[ 2 ] - ارزیابی و اعتبارسنجی کد EGSnrc در شبیه سازی دستگاه شتاب دهنده Siemens Oncor® با انرژی 18 مگاولتاژ
Introdution: The aim of this study was to evaluate and benchmark EGSnrc code in the simulation of 18 MV photon beam produced by Siemens Oncor® linear accelerator. Methods: This study was conducted in a comparative and simulation based on experience method. The Beamnrc code was used to model the accelerator head and generate phase space files. The phase space files were obtained with the fo...
[ 3 ] - استفاده از مدل برنامه‌ریزی خطی مختلط عدد صحیح جهت بهینه-سازی زاویه و شدت پرتو در پرتودرمانی با شدت مدوله شده
Introdution: Intensity- modulated radiation therapy is one of the treatment methods for cancer tumors. The effectiveness of this method is dependent on the accuracy and treatment planning quality. Therefore, there is a need for a plan to select the angle and intensity simultaneous optimum of radiation. Methods: In this study, an mixed integer linear programming model was proposed for simultane...
[ 4 ] - پیشنهاد یک پروتکل ساده برای دزیمتری in vivo در پرتودرمانی تومورهای سر و گردن با استفاده از تصویربرداری پورتال
زمینه و هدف : لزوم وجود برنامه‌های دوره‌ای کنترل کیفیت در آنکولوژی تابشی توسط سازمان‌های مختلفی نظیر AAPM ، ACR ، ACMP و ESTRO توصیه شده است. یکی از بهترین روش‌های انجام کنترل کیفیت انجام دزیمتری in vivo در حین پرتودرمانی می‌باشد. این مطالعه به منظور طراحی پروتکلی ساده برای دزیمتری in vivo در پرتودرمانی تومورهای سر و گردن با استفاده از تصویربرداری پورتال انجام گردید. روش بررسی : در این مطالعه ...
[ 5 ] - A Feasibility Study of IMRT of Lung Cancer Using Gafchromic EBT3 Film
Background: Intensity modulated radiation therapy (IMRT) is an advanced method for delivery of three dimensional therapies, which provides optimal dose distribution with giving multiple nonuniform fluency to the patient. The complex dose distribution of IMRT should be checked to ensure that the accurate dose is delivered. Today, film dosimetry is a powerful tool for radiotherapy treatment Quali...
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