نتایج جستجو برای: monte carlo prostate cancer primo

تعداد نتایج: 1005071  

Journal: :Journal of biomedical optics 2008
Erik Alerstam Stefan Andersson-Engels Tomas Svensson

A novel scheme for fully scalable White Monte Carlo (WMC) has been developed and is used as a forward solver in the evaluation of experimental time-resolved spectroscopy. Previously reported scaling problems are avoided by storing detection events individually, turning spatial and temporal binning into post-simulation activities. The approach is suitable for modeling of both interstitial and no...

Journal: :iranian journal of cancer prevention 0
pegah khosravi 1. dept. of bioinformatics, institute of biochemistry and biophysics (ibb), university of tehran, tehran, iran 2. school of biological sciences, institute for research in fundamental sciences (ipm), tehran, iran javad zahiri 1. faculty of mathematics, k. n. toosi university of technology, tehran, iran 2. dept. of bioinformatics, institute of biochemistry and biophysics (ibb), university of tehran, tehran, iran vahid h. gazestani institute of parasitology, mcgill university, montreal, quebec, canada samira mirkhalaf dept. of bioinformatics, institute of biochemistry and biophysics (ibb), university of tehran, tehran, iran mohammad akbarzadeh dept. of bioinformatics, institute of biochemistry and biophysics (ibb), university of tehran, tehran, iran mehdi sadeghi 1.national institute of genetic engineering and biotechnology, tehran, iran 2.school of biological sciences, institute for research in fundamental sciences (ipm), tehran, iran

background prostate cancer is a serious genetic disease known as the first widespread cancer in men, yet the molecular changes required for the cancer progression is not fully understood. availability of high-throughput gene expression data has led to the development of various computational methods for the identification of critical genes involved in the cancer. methods in this paper, we show ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی امیرکبیر(پلی تکنیک تهران) - دانشکده ریاضی و کامپیوتر 1386

در این پایان نامه به بخش بندی تصاویر چندطیفی پرداخته می شود. برای این منظور روش جدیدی با عنوان مدل بر پایه مدل درختی معرفی می شود. این روش بر پایه خوشه بندی با استفاده از مدل های آمیخته متناهی و براورد پارامترها با استفاده از بیشینه کردن تابع درستنمایی و حل آن با الگوریتم em می باشد. تعیین تعداد خوشه ها بوسیله معیار انتخاب بیز که توسط bic تخمین زده می شود معیین می گردد. وابستگی مکانی پیکسل ه...

2011
Yipeng Yang Y. Charles Li

A discrete model for computer simulations of the clustering dynamics of Social Amoebae is presented. This model incorporates the wavelike propagation of extracellular signaling cAMP, the sporadic firing of cells at early stage of aggregation, the signal relaying as a response to stimulus, the inertia and purposeful random walk of the cell movement. A Monte Carlo simulation is run which shows th...

Journal: :cell journal 0

objective: the passage of ionizing radiation in living cells creates clusters of damaged nucleotides in dna. in this study, dna strand breaks induced by the beta particle of iodine-131 (i-131), have been determined experimentally and compared to monte carlo simulation results as a theoretical method of determining131i damage. materials and methods: in this experimental study, in order to create...

Journal: :iranian journal of radiation research 0
m.b. tavakoli department of medical physics and medical engineering, school of medicine, isfahan university of medical sciences, isfahan, iran d. shahbazi-gahrouei department of medical physics and medical engineering, school of medicine, isfahan university of medical sciences, isfahan, iran m. hosseinpour department of medical physics and medical engineering, school of medicine, isfahan university of medical sciences, isfahan, iran

background: for an effective treatment planning in brachytherapy, it is necessary to know the accurate source dosimetric information such as air kerma strength, exposure rate constant, dose rate constant and redial dose distribution. the usual method to determine these factors is thermo luminescent dosimeter (tld) dosimetry. nowadays, another more accurate method is known to be the monte carlo ...

Journal: :medical journal of islamic republic of iran 0
monireh mohsenzadegan department of immunology, school of medicine, iran university of medical sciences, tehran, iran & cellular and molecular research center, iran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences) nader tajik department of immunology, school of medicine, iran university of medical sciences, tehran, iran & cellular and molecular research center, iran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences) zahra madjd oncopathology research centre and department of pathology, school of medicine, iran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences) mehdi shekarabi department of immunology, school of medicine, iran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences) mohammad m farajollahi cellular and molecular research center, iran university of medical sciences, tehran, iran, department of medical biotechnology, school of allied medical sciences, iran university of medical sciences, tehran, iran & food and drug laboratory, fardis, alسازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences)

background: prostate cancer is one of the leading causes of cancer deaths among men. new gene expressed in prostate (ngep), is a prostate-specific gene expressed only in normal prostate and prostate cancer tissue. because of its selective expression in prostate cancer cell surface, ngep is a potential immunotherapeutic target. to target the ngep in prostate cancer, it is essential to investigat...

Journal: :Physics in medicine and biology 2015
Fernando Hueso-González Javier Vijande Facundo Ballester Jose Perez-Calatayud Frank-André Siebert

In low energy brachytherapy, the presence of tissue heterogeneities contributes significantly to the discrepancies observed between treatment plan and delivered dose. In this work, we present a simplified analytical dose calculation algorithm for heterogeneous tissue. We compare it with Monte Carlo computations and assess its suitability for integration in clinical treatment planning systems. T...

Journal: :Statistics in medicine 2009
Li Zhang Bhramar Mukherjee Bo Hu Victor Moreno Kathleen A Cooney

We consider the inference problem of estimating covariate and genetic effects in a family-based case-control study where families are ascertained on the basis of the number of cases within the family. However, our interest lies not only in estimating the fixed covariate effects but also in estimating the random effects parameters that account for varying correlations among family members. These...

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