نتایج جستجو برای: 103pd source
تعداد نتایج: 418786 فیلتر نتایج به سال:
OBJECTIVE Low dose rate (LDR) prostate brachytherapy (permanent 125I or 103Pd seeds) is an accepted treatment option for low risk prostate cancer patients. However, differences in prostate spatial location, volume and gland deformation between the images obtained during pre-planning and later on during the implant procedure prevent the pre-planned intended dose to be accurately delivered. We ar...
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Using the Monte Carlo N-Particle computer code (MCNP), doses were calculated for organs of interest such as the stomach, prostate, liver, and kidneys while patients were undergoing prostate brachytherapy. This research is important because the doses delivered to the prostate are extremely high and the organs near the prostate are potentially at risk of receiving high doses of radiation, ...
مقدمه: چشمه های براکی تراپی(LDR) به طور وسیع به صورت کاشت در تومورهای سرطانی به ویژه در پروستات به کار می روند. اخیراً چندین طراحی جدید از چشمه های تجاری 125I و 103Pd برای انجام کارهای کلینیکی تولید شده اند. در این پژوهش مشخصه های دزیمتری یک چشمه جدید براکی تراپی با استفاده از دزیمترهای ترمولومینسانس و فیلم رادیوکرومیک تعیین شده اند. توزیع دز اطراف چشمه براکی تراپی ید- 125 در یک فانتوم پلکسی گل...
The determination of the dosimetry parameters of brachytherapy in the treatment of cancerous tumors as per the TG-43U1 protocol provided by the American Association of Physicists in Medicine should be done in the surrounding water source before clinical application. To achieve a good treatment result, various factors such as body tissues with different densities can have a decisive role so that...
in recent years, there has been a fast growth in wind energy conversion system (wecs). there are two general types of wind turbines in wecs: fixed speed wind turbines and varying speed wind turbines.permanent magnet synchronous generator (pmsg) is one of the most attractive generators for the varying speed turbine wecs.in this paper, a fuzzy controller is proposed to control the current source ...
this contribution determines suitable fingerprinting properties for sediment source discrimination within theamrovan and atary catchments in semnan province, iran. these catchments are representative of a range of geology formations and should therefore provide a meaningful basis for a general assessment of the degree of sediment source discrimination afforded by a range of fingerprint properti...
different approaches of source apportionment of dust fractions have been reported world-over. predicting source categories within receptor chemical profiles using regression and factor analysis using pca has been reported to evaluate possible source/routes of air pollution mass. the present study is focused on the application of all three approaches to investigate higher degrees of significance...
in this paper, a new topology for boost z-source inverterbased on switched-inductor cell is proposed. the operating modes of the proposed inverter are analyzed and also a suitable control method to generate the trigger signals of the inverter is presented. having a common earth between the input source and inverter and capability to generate a higher voltage gain by using lower amounts of the d...
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