نتایج جستجو برای: external dose

تعداد نتایج: 495703  

Journal: :Nihon genshiryoku gakkai wabun rombunshi 2023

Since the accident at Fukushima Daiichi Nuclear Power Plant, many decontamination works have been carried out. Although exposure status of workers has appropriately managed by government, there are few examples detailed analysis external dose conditions. In this study, on basis GPS location information obtained from devices together with their personal dosimeters, air rate in work area and char...

Journal: :iranian journal of medical physics 0
azizollah rahimi msc student of medical physics, tarbiat modares university, tehran, iran. bijan hashemi associate professor, medical physics dept., tarbiat modares university, tehran, iran. mohammad hassan zahmatkesh assistant professor, novin medical radiation institute, tehran, iran. ramin jaberi physicist, cancer institute, department of radiotherapy and oncology, imam khomeini hospital, tehran, iran. shahab sheibani assistant professor, nuclear sciences research center, nuclear science and technology research center, tehran, iran.

introduction: polymer gels are modern dosimeters providing three dimensional dose distributions. these dosimeters can be used in brachytherapy in which the tumor dimension is relatively small and the dose gradient is high. in this study, the ability of the magica polymer gel was investigated for assessing the absolute dose values as well as the dose distribution of low dose rate (ldr) ir-192 wi...

Journal: :Egyptian Journal of Biomedical Engineering and Biophysics 2020

Journal: :International Journal of Radiation Applications and Instrumentation. Part D. Nuclear Tracks and Radiation Measurements 1990

Journal: :iranian journal of medical physics 0
hassan ranjbar msc. student, medical radiation dept., amir kabir university of technology, tehran, iran mojtaba shamsaei zafarqandi assistant professor, medical radiation dept., amir kabir university of technology, tehran, iran mahammad reza ghasemi assistant professor , nuclear science and technology research institute, tehran, iran

introduction: secondary radiation such as photoelectrons, auger electrons and characteristic radiations cause a local boost in dose for a tumor when irradiated with an external x-ray beam after being loaded with elements capable of activating the tumor, e.g.; i and gd. materials and methods:  in this investigation, the mcnpx code was used for simulation and calculation of dose enhancement facto...

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