نتایج جستجو برای: magica

تعداد نتایج: 55  

Journal: :Journal for Foreign Languages 2014

Journal: :iranian journal of radiation research 0
m. khadem-abolfazli physics department, mazandaran university, babolsar, iran m. mahdavi physics department, mazandaran university, babolsar, iran s.r.m. mahdavi medical physics department, iran university of medical sciences, tehran, iran gh. ataei para medical school, babol university of medical sciences, babol, iran

background: radiation-sensitive polymer gels are among the most promising three-dimensional dose verification tools and tissue-like developed to date. among the special features of this type of dosimeters, is be doped with other elements or chemicals which made them appropriate for investigating of dose enhancement with contrast agents, by high atomic number. material and methods: in this study...

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...

K. Adinehvand, M.H. Zahmatkesh, M.R Aghamiri, S. Bagheri, Sh. Akhlaghpour,

Background: The purpose of this study was to evaluate the dependency of MAGICA polymer gel dosimeter response (R2) on different electron energies as well as on different mean dose rate for a standard clinically used linear accelerator. Materials and Methods: The sensitivity of the dosimeter was represented by the slope of calibration curve in the linear region measured for each modalit...

Journal: :Cartoon and Animation Studies 2015

Background: Normoxic type MAGICA gel dosimeters are established for dose quantification in three dimensions for radiotherapy. Objective(s): The ability of MAGICA polymer gel was assessed by experimental measurements method for studying the effect of gold nanoparticles (GNPs) in dose enhancement under the external 18MV radiotherapy practices. <...

Gh. Ataei, M. Khadem-Abolfazli, M. Mahdavi, S.R.M. Mahdavi,

Background: Radiation-sensitive polymer gels are among the most promising three-dimensional dose verification tools and tissue-like developed to date. Among the special features of this type of dosimeters, is be doped with other elements or chemicals which made them appropriate for investigating of dose enhancement with contrast agents, by high atomic number. Material and Methods: In this study...

Journal: :iranian journal of medical physics 0
m. sedaghat ph.d. student in medical physics, university of sherbrooke, canada. m.h zahmatkesh assistant professor, novin medical radiation institute, tehran, iran. r. jaberi m.sc. in medical physics, cancer institute, imam hospital, tums, tehran, iran. sh. akhalghpoor assistant professor, faculty of medicine, tums &amp; novin medical radiation institute, tehran, iran. m. allahverdi assistant professor, dept. of medical physics, faculty of medicine, tums &amp; cancer institute of imam hospital, tehran, iran.

introduction: despite the fact that the clinical implementation of polymer gel dosimetry has been facilitated after the introduction of normoxic gels, there are still complications in its clinical routine use that are under investigation. in the current work, the feasibility of using a normoxic polymer gel dosimeter named magica has been investigated for use in our clinical brachytherapy applic...

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