نتایج جستجو برای: radial dose function

تعداد نتایج: 1533152  

Journal: :iranian journal of radiation research 0
o. kiavar department nuclear engineering, science and research branch, islamic azad university, tehran, iran m. sadeghi agricultural, medical & industrial research school, nuclear science and technology research institute, karaj, iran

background: recently, different investigators have studied the possibility of radiation therapy in restenosis prevention and have shown promising results. in this study a unique radioactive source for intra vascular brachytherapy (ivbt) was investigated. the two-dimensional dose distribution in water for a 32p ivbt stent has been calculated. the pure beta emitter source 32p has been coated on p...

Journal: :iranian journal of radiation research 0
s. sina radiation research center, school of engineering, shiraz university, shiraz, iran r. faghihi radiation research center, school of engineering, shiraz university, shiraz, iran a.s. meigooni department of radiation medicine, university of kentucky medical centre, lexington, kentucky, usa s. mehdizadeh radiation research center, school of engineering, shiraz university, shiraz, iran m. zehtabian radiation medicine department, school of engineering, shiraz university, shiraz, iran m.a. mosleh-shirazi radiotherapy physics unit, department of radiotherapy and oncology, shiraz university of medical sciences, shiraz, iran

background: the dose rate distribution delivered by a low dose rate 137cs pellet source, a spherical source used within the source trains of the selectron gynecological brachytherapy system, was investigated using the mcnp4c monte carlo code. materials and methods: the calculations were performed in both water and plexiglas and the absolute dose rate distribution for a single pellet source and ...

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...

M. Sadeghi, O. Kiavar,

Background: Recently, different investigators have studied the possibility of radiation therapy in restenosis prevention and have shown promising results. In this study a unique radioactive source for intra vascular brachytherapy (IVBT) was investigated. The two-dimensional dose distribution in water for a 32P IVBT stent has been calculated. The pure beta emitter source 32P has been co...

پایان نامه :دانشگاه آزاد اسلامی واحد کرمانشاه - دانشکده مهندسی برق و الکترونیک 1393

a novel ultra wideband microstrip bandpass filter using radial stub loaded resonator and interdigital coupled lines is presented in this paper. the radial stub loaded resonator and decagonal patch form a resonator named m to create tuneable multiple notches in the passband for suppression wlan interference. to realize sharp roll-off, two adjustable transmission nulls are located at the lower an...

A.S. Meigooni, M. Zehtabian, M.A. Mosleh-Shirazi, R. Faghihi, S. Mehdizadeh, S. Sina,

Background: The dose rate distribution delivered by a low dose rate 137Cs pellet source, a spherical source used within the source trains of the Selectron gynecological brachytherapy system, was investigated using the MCNP4C Monte Carlo code. Materials and Methods: The calculations were performed in both water and Plexiglas and the absolute dose rate distribution for a single pellet s...

Journal: :Biomedical Journal of Scientific & Technical Research 2018

Journal: :iranian journal of radiation research 0
a. mesbahi medical physics department, medical school, tabriz university of medical sciences, tabriz, iran a. haghzadeh engineering faculty, medical radiation engineering department, azad university, science and research branch, tehran, iran a.r. naseri radiation oncology department, imam hospital, tabriz, iran a.r. naseri engineering faculty, medical radiation engineering department, azad university, science and research branch, tehran, iran

background: in the current study the effect of shielded colpostat on rectum received dose was calculated in cervical brachytherapy using monte carlo (mc) method. materials and methods: two 60co sources of gzp6 brachytherapy unit used for intracavitary treatments were simulated using mcnpx monte carlo code. also the two types of colpostats including shielded and unshielded were simulated inside ...

Arjang Shahvar Gholamreza Raisali, Mahdi Sadeghi, Maryam Ghasemi Ghonchehnazi Vahideh Ataeinia

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...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بناب - دانشکده علوم پایه 1393

در این پایان نامه روش عددی جدید مطرح شده برای معادله ی برگر و برگر- هوکسلی با استفاده از تابع پایه ای شعاعی مالتی کووادریک برای تقریب فضایی و مرتبه ی دوم طرح تفاضل متناهی فشرده بکار گرفته شده است.

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