نتایج جستجو برای: radial dose function
تعداد نتایج: 1533152 فیلتر نتایج به سال:
background: the purpose of this project was to derive the brachytherapy dosimetric functions described by american association of physicists in medicine (aapm) tg-43 u1 based on high dose rate 192i sources. materials and methods: the method utilized included both simulation of the designed polymethyl methacrylate (pmma) phantom using the monte carlo of mcnp4c and benchmarking of the simulation ...
Background: The purpose of this project was to derive the brachytherapy dosimetric functions described by American Association of Physicists in Medicine (AAPM) TG-43 U1 based on high dose rate 192I sources. Materials and Methods: The method utilized included both simulation of the designed Polymethyl methacrylate (PMMA) phantom using the Monte Carlo of MCNP4C and benchmarking of the simulation ...
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...
Background: In the current study the effect of shielded colpostat on rectum received dose was calculated in cervical brachytherapy using Monte Carlo (MC) method. Materials and Methods: Two 60Co sources of GZP6 brachytherapy unit used for intracavitary treatments were simulated using MCNPX Monte Carlo code. Also the two types of colpostats including shielded and unshielded were simulated inside ...
Objective: Brachytherapy sources are widely used for the treatment of cancer. The report of Task Group No. 43 (TG-43) of American Association of Physicists in Medicine is known as the most common method for the determination of dosimetric parameters for brachytherapy sources. The aim of this study is to obtain TG-43 dosimetric parameters for 60Co, 137Cs, 192Ir and 103Pd brachyt...
Radioactive 125I and 192Ir seeds are widely used as sources for interstitial implantation.192Ir is one of the important sources frequently used in brachytherapy. Up to now, different commercial models of this source type have been introduced to the clinical radiation oncology applications. The aim of the present study is to determine the dosimetric parameters of this new PDR Ir-192 source model...
This study used MCNPX code to investigate the brachytherapy (192)Ir dose distributions in water, bone, and lung tissue and performed radiophotoluminescent glass dosimeter measurements to verify the obtained MCNPX results. The results showed that the dose-rate constant, radial dose function, and anisotropy function in water were highly consistent with data in the literature. However, the lung do...
BACKGROUND Dosimetric characteristics of a high dose rate (HDR) GZP6 Co-60 brachytherapy source have been evaluated following American Association of Physicists in MedicineTask Group 43U1 (AAPM TG-43U1) recommendations for their clinical applications. MATERIALS AND METHODS MCNP-4C and MCNPX Monte Carlo codes were utilized to calculate dose rate constant, two dimensional (2D) dose distribution...
background: the formalism recommended by task group 60 (tg-60) of the american association of physicists in medicine (aapm) is applicable for β sources. radioactive biocompatible and biodegradable 153sm glass seed without encapsulation is a β- emitter with a short half life and delivers a high dose rate to the tumor in the millimeter range. in this work the dosimetry parameters of the seed for ...
in this article, we apply the multiquadric radial basis function (rbf) interpo-lation method for nding the numerical approximation of traveling wave solu-tions of the kawahara equation. the scheme is based on the crank-nicolsonformulation for space derivative. the performance of the method is shown innumerical examples.
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید