نتایج جستجو برای: magic f polymer gel dosimeters

تعداد نتایج: 505330  

2009
Jouni Uusi-Simola

Boron neutron capture therapy (BNCT) is a form of chemically targeted radiotherapy that utilises the high neutron capture cross-section of boron-10 isotope to achieve a preferential dose increase in the tumour. The BNCT dosimetry poses a special challenge as the radiation dose absorbed by the irradiated tissues consists of several dose components with different relative biological effectiveness...

A. Takavar, A. Vaezzadeh, H.A. Nedaie, M. Keshtkar, M. Naderi, M.H. Zahmatkesh,

Background: Some tissues in human body are radiobiologically different from water and these inhomogeneity must be considered in dose calculation in order to achieve an accurate dose delivery. Dose verification in complex radiation therapy techniques, such as intensity‐modulated radiation therapy (IMRT) calls for volumetric, tissue equivalent and energy independent dosimeter. The purpose of this...

H. Khalafi, M. Shahriari, M.H. Zahmatkesh, S. Bagheri, S.M. Abtahi, Sh. Akhlaghpoor,

parameters that have to be measured in gel dosimetry. However, the resolution in gel is strongly dependant on gel composition. Selection of optimum method in dose response readout and proper values of parameters can result in noise reduction as well as improvement of contrast, and spatial resolution considerably. Materials and Methods: MAGICA polymer gel dosimeters were manufactured and irradia...

Journal: :iranian journal of radiation research 0
s.m. abtahi shahid beheshti university, nuclear engineering faculty, tehran, iran m. shahriari shahid beheshti university, nuclear engineering faculty, tehran, iran m.h. zahmatkesh novin medical radiation institute, tehran, iran h. khalafi nuclear science and technology research institute, tehran, iran sh. akhlaghpoor novin medical radiation institute, tehran, iran s. bagheri novin medical radiation institute, tehran, iran

parameters that have to be measured in gel dosimetry. however, the resolution in gel is strongly dependant on gel composition. selection of optimum method in dose response readout and proper values of parameters can result in noise reduction as well as improvement of contrast, and spatial resolution considerably. materials and methods: magica polymer gel dosimeters were manufactured and irradia...

Journal: :iranian journal of radiation research 0
m. gholami 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 t. allahverdi pourfallah department of biophysics and biochemistry, school of medicine, mazandaran university of medical sciences, sari, iran

background: the human body contains of different tissues and cavities with different physical and radiological properties. most important among these are tissues and cavities that are radiologically different from water, including lungs, sinuses and bones. gel dosimetry provides a unique feature to display dose distributions occurring in clinical radiation therapy in three dimensions. materials...

2017
M. Keshtkar A. Takavar M. H. Zahmatkesh H. A. Nedaie A. Vaezzadeh M. Naderi

Background: Some ssues in human body are radiobiologically different from water and these inhomogeneity must be considered in dose calcula on in order to achieve an accurate dose delivery. Dose verifica on in complex radia on therapy techniques, such as intensity‐modulated radia on therapy (IMRT) calls for volumetric, ssue equivalent and energy independent dosimeter. The purpose of this study i...

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