نتایج جستجو برای: 6mv

تعداد نتایج: 216  

Journal: :Applied sciences 2023

The Message Passing Interface (MPI) technique is an old solution and improvement on the Monte Carlo N-Particle Transport (MCNP) method’s enormous computational time, which has not been evaluated based PHITS code—a recently developed simulation code. We conducted simulations Varian Clinac iX 6MV phase space data from IAEA. Venselaar et al.’s method criteria were used to validate simulation. PC c...

Journal: :International Journal of Health Sciences (IJHS) 2022

This study aimed to compare the sexual quality of life through pre-defined parameters prostate cancer (PCa) patients with pre-and-post- volumetric modulated arc radiation therapy (VMAT) and examine their association doses penile bulb (PB) patient peculiarity. In this retrospective study, we analyzed medical record data 100 who received definitive external (RT) hormone (HT) for between June Dece...

Journal: :Arab Journal of Nuclear Sciences and Applications (Print) 2021

ABSTRACT Introduction: This work aimed to study dosimetrically compare 6MV, 10MV and dual energies (DE) photon beam in liver cancer, evaluating the effect of using different on intensity-modulated radiation (IMR) outcome were selected.IMRT treatment plans Identical optimization constraints applied for all energy plans. The parameters like angle, number beams, kept constant achieve same clinical...

ژورنال: سنجش و ایمنی پرتو 2017

In this paper, the ratio of adsorbed dose to the tissues of muscle, blood and bone to water for medical accelerators of Electa 25MV and Siemens 6MV is calculated using an analytical method based on cavity theory and Monte Carlo simulation. To confirm the validation of these methods, the ratio of absorbed dose to air to water was determined experimentally for radiation field of 60Co in Secondary...

Journal: :International Journal of Power Electronics and Drive Systems 2022

Small signal-to-noise ratio (SNR) and multiple noise sources, coupled with very weak signal amplitudes of bio signals make brain-computer interface (BCI) application studies a challenging task. The front-end recorder amplifiers receive very-weak (few μV) from high impedance electrodes for efficient processing such low frequency (<1 kHz) gain amplifier operating voltage total harmonic distort...

حجت الله شهبازیان رضا مسکنی سودابه رجا اسکندری سید مجتبی حسینی قهفرخی سیده خدیجه حسینی فرزانه میرخاقانی, ناهید چگنی,

زمینه و هدف: شبیه سازی با تکنیک مونت کارلو یک ارزیابی عملی ویژگی های پرتو فوتونی کلینیکی است. دقت نتایج شبیه سازی به اعتبار سنجی محاسبات مدل شبیه سازی استفاده شده متکی است. در این مطالعه اعتبار شبیه سازی با کد BEAMnrc برای انرژی 6MV بررسی شد. روش بررسی: کلاهک درمانی شتاب دهنده واریان 2100C/D برای انرژی 6MV  با استفاده از کد BAMnrc شبیه­سازی شد. چشمه الکترونی ت...

Ahmad Mostaar, Ghazale Graily Seied Rabi Mahdavi, Seyed Aliasghar Rohani

  Introduction:    Multileaf collimators (MLCs) are computer-controlled devices which are Useful and cost-effective tools for conformal therapy and intensity modulation radiotherapy (IMRT). Nowadays MLCs are important and standard configuration of the new medical linear accelerators which are substitute of conventional Blocks and has eliminated the ...

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