بررسی فاکتور های تاثیر گذار در پروتون تراپی توسط کد شبیه سازی mcnpx

محاسبه دوز جذبی از پرتوهای پراکنده مری و تیروئید از پروتون تراپی تومورهای چشم با استفاده از کد شبیه سازی MCNPX

بررسی عوامل موثر بر متوسط دوز غده ای در ماموگرافی با استفاده از کد شبیه سازی MCNPX

Background: Average glandular dose (AGD), entrance skin air kerma (ESAK) and normalized glandular dose (DgN) are the main dosimetric quantities in mammography. Breast tissue composition is one of the factors affecting on DgN values. In this study both homogeneous and heterogeneous breast tissue is assumed and its impact on DgN values are evaluated. Methods: Homogeneous breast phantom with diffe...

بررسی اثر تغییر انرژی بر توزیع عمق-دوز در پروتون درمانی تومور چشمی با استفاده از کد MCNPX

Introduction: Depth-dose distribution curve of protons in the matter has a maximum is called Bragg peak. Bragg peak of a monoenergetic proton beam is too narrow. The spread out Bragg peak should be created for full coverage of the tumor. The spread out Bragg peak is obtained in the depth of the tumor with superposition of the several Bragg peaks. The aim of this study was coverage of an eye tum...

شبیه سازی آهنگ دز جذب شده سیب درختی در سامانه گاما سل 220 با استفاده از کد MCNPX

In this study, the dose rates in a gamma cell 220 device for apple were calculated by using MCNPX code in two states. In first state, apple uniformly fills the whole space of gamma cell. In second state, it was supposed that apples are spherical form that the empty space between them is filled by air. Generally, the results show that in both states the distributed dose rates are non-uniform. In...

بررسی مشخصه منحنی براگ ناشی از تغییر مکان مواد غیر همگن توسط کد شبیه سازی mcnpx

مواد غیر همگن باعث تخریب منحنی براگ و sobp میشود. استفاده از کد های شبیه ساز مونت کارلواز قبیل mcnpx میتوانداین تخریب را پیش بینی کند

شبیه سازی یک آشکارساز تناسبی میکرو نواری برای آشکارسازی گاز رادن و دختران با کد مونت کارلو (MCNPX)

Many detection methods have been applied to detect radon gas. Due to the low noise and high resolution of gas detectors compared to semiconductor detectors or scintillation detectors, using them to detect alpha radiation is very considerable. Microstrip proportional detector is also included in this group and it has not been used for the detection of radon. In this article, response of the micr...