نتایج جستجو برای: bnct رآکتور مینیاتوری mnsr کد mcnp
تعداد نتایج: 8143 فیلتر نتایج به سال:
در این پایان نامه، فاکتور تصحیح کیفیت، ، توسط کد mcnp به روش مونت کارلو برای قوی تر کردن دزیمتری کلینیکی شبیه سازی شد و پروتوکل های aapm tg-51 وiaea trs-398 برای پارامتر های و دز جذبی آب، ، مورد مقایسه قرار گرفته اند. اندازه گیری های دز در هر دو پروتوکل توسط چمبر های صفحه موازی و استوانه ای برای پرتو های فوتون کلینیکی mv 18 و 6 و الکترون های mev 18 و 15، 12، 9، 6 قابل ردیابی به فاکتور کالیبر...
PURPOSE To develop a procedure for the optimum patient positioning and immobilization during boron neutron capture therapy (BNCT) of glioblastoma multiforme (GBM) at the Brookhaven medical research reactor (BMRR). METHODS A replica of the treatment room in the BMRR was constructed to simulate patient position. A unique feature is a transparent opening in wall to simulate the location of the b...
Interface software was developed to generate the input file to run Monte Carlo MCNP-4B code from medical image in Interfile format version 3.3. The software was tested using a spherical phantom of tomography slides with known cumulated activity distribution in Interfile format generated with IMAGAMMA medical image processing system. The 3D dose calculation obtained with Monte Carlo MCNP-4B code...
BACKGROUND/AIM The tumor suppressor gene p53 is mutated in glioblastoma. We studied the relationship between the p53 gene and the biological effects of boron neutron capture therapy (BNCT). MATERIALS AND METHODS The human glioblastoma cells; A172, expressing wild-type p53, and T98G, with mutant p53, were irradiated by the Kyoto University Research Reactor (KUR). The biological effects after n...
BACKGROUND Boron neutron capture therapy (BNCT) is a selective radiotherapy that is dependent on the accumulation of ¹⁰B compound in tumors. Low-intensity ultrasound produces a transient pore on cell membranes, sonoporation, which enables extracellular materials to enter cells. The effect of sonoporation on BNCT was examined in oral squamous cell carcinoma (SCC) xenografts in nude mice. MATER...
The purpose of this clinical trial was to evaluate the utility of boron neutron capture therapy (BNCT) using epithermal neutrons for cases of recurrent cancer in the oral cavity, which are not indicated for a conventional treatment modality. We enrolled four patients with local recurrence or metastasis to the regional lymph nodes after completion of initial treatments, including surgery, chemot...
Boron Neutron Capture Therapy (BNCT) is known to be a promising and new cancer therapy which can kill tumor cells suppressing damage to normal tissues. Recently, accelerator based neutron sources (ABNS) for BNCT are under development especially in Japan. For characterization of the neutron field, we carried out the series study concerning thermal/epi-thermal neutron spectrometry especially for ...
Radiation therapy is the therapeutic modality in which high energy radiations are used to kill tumor cells [1]. Conventional radiation therapy is a whole body radiation process resulting in numerous side effects, highlighting the need to identify alternative targeted therapy [1]. BNCT is a targeted therapy in which cancer cells accumulate boron and are subsequently bombarded with neutrons [2]. ...
Mitochondria-targeting peptides have garnered immense interest as potential chemotherapeutics in recent years. However, there is a clear need to develop strategies to overcome the critical limitations of peptides, such as poor solubility and the lack of target specificity, which impede their clinical applications. To this end, we report magnetic core-shell nanoparticle (MCNP)-mediated delivery ...
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