نتایج جستجو برای: dosimetric characteristics monte carlo simulation

تعداد نتایج: 1231401  

2008
V. T. Lazurik

Software for modelling by Monte Carlo (MC) method the dosimetric devices such as dosimetric wedge (ModeDW) and stack (ModeStEB) irradiated with scanned electron beam on moving conveyer was developed by authors. Integration of computer modelling of a dose distribution in films located in a wedge and stack made of arbitrary materials expands the procedure opportunities of the dosimetric devices i...

Journal: :iranian journal of radiation research 0
w. parwaie department of radiology, faculty of para-medicine, hormozgan university of medical sciences, bandar abbas, iran m. yarahmadi department of medical physics, faculty of medicine, kurdistan university of medical sciences, sanandaj, iran h.a. nedaie department of radiotherapy, cancer institute, tehran university of medical sciences, tehran, iran m.h. zahmatkesh shahid beheshti university of medical sciences, tehran, iran a.h. barati department of medical physics, faculty of medicine, kurdistan university of medical sciences, sanandaj, iran m. afkhami department of radiology, faculty of para-medicine, hormozgan university of medical sciences, bandar abbas, iran

background: accurate small radiation field dosimetry is essential in modern radiotherapy techniques such as stereotactic radiosurgery (srs) and intensity modulated radiotherapy (imrt). precise measurement of dosimetric parameters such as beam profile, percentage depth doses and output factor of these beams are complicated due to the electron disequilibrium and the steep dose gradients. in the p...

Journal: :iranian journal of radiation research 0
h. nedaie department of medical physics, tehran university of medical sciences, tehran, iran m. shariary department of nuclear engineering, shahid beheshti university, tehran, iran h. gharaati department of medical physics, tehran university of medical sciences, tehran, iran m. allahverdi department of medical physics, tehran university of medical sciences, tehran, iran m.a. mosleh-shirazi joint department of physics, royal marsden hospital and institute of cancer research, surrey, uk

abstract background: accurate methods of radiation therapy dose calculation. there are different monte carlo codesfor simulation of photons, electrons and the coupled transport of electrons and photons. mcnpis a general purpose monte carlo code that can be used for electron, photon and coupledphoton-electron transport.monte carlo simulation of radiation transport is considered to be one of the ...

Ali Shabestani Monfared, Mohammad Davoudi Mohammad Rahgoshay

Introduction: Monte Carlo calculation method is considered to be the most accurate method for dose calculation in radiotherapy. The purpose of this research is comparison between 6 MV Primus LINAC simulation output with commissioning data using EGSnrc and build a Monte Carlo geometry of 6 MV Primus LINAC as realistically as possible. The BEAMnrc and DOSXYZnrc (EGSnrc package) M...

Journal: :journal of optimization in industrial engineering 2016
hamed fazlollahtabar mohamma saidi-mehrabad

we compare two approaches for a markovian model in flexible manufacturing systems (fmss) using monte carlo simulation. the model which is a development of fazlollahtabar and saidi-mehrabad (2013), considers two features of automated flexible manufacturing systems equipped with automated guided vehicle (agv) namely, the reliability of machines and the reliability of agvs in a multiple agv jobsho...

Journal: :iranian journal of medical physics 0
gholamreza raisali associate professor, radiation application research school, nuclear science and technology research institute, atomic energy organization of iran, tehran, iran mahdi sadeghi assistant professor, agricultural, medical and industrial research school, nuclear science and technology research institute, atomic energy organization of iran, karaj, iran vahideh ataeinia m. sc. in medical applications of radiation, nuclear engineering dept, faculty of engineering, science and research unit, islamic azad university, tehran, iran arjang shahvar b. sc. in physics, agricultural, medical and industrial research school, nuclear science and technology research institute, atomic energy organization of iran, karaj, iran maryam ghasemi ghonchehnazi m. sc. in medical physics, medical physics dept., faculty of medical sciences, isfahan university of medical sciences, isfahan, iran

introduction: the use of low energy isotopes such as  103 pd in brachytherapy for the treatment of cancers  such as prostate, eye, head, neck, breast and cervix is increasing. in this regard, different models of pd- 103  seeds  have  been  designed  and  manufactured  at  the  agricultural,  medical  and  industrial  research  school (amirs) of atomic energy organization of iran. in this resear...

Journal: :Physics in medicine and biology 2012
N Lanconelli M Pacilio S Lo Meo F Botta A Di Dia A Torres Aroche M A Coca Pérez M Cremonesi

The increasing availability of SPECT/CT devices with advanced technology offers the opportunity for the accurate assessment of the radiation dose to the biological target volume during radionuclide therapy. Voxel dosimetry can be performed employing direct Monte Carlo radiation transport simulations, based on both morphological and functional images of the patient. On the other hand, for voxel ...

The increasing penetration of renewable energy results in changing the traditional power system planning and operation tools. As the generated power by the renewable energy resources are probabilistically changed, the certain power system analysis tolls cannot be applied in this case.  Probabilistic optimal power flow is one of the most useful tools regarding the power system analysis in presen...

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