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Iranian Journal of Medical Physics، جلد ۱۱، شماره ۱، صفحات ۱۹۵-۲۰۴
عنوان فارسی
چکیده فارسی مقاله
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عنوان انگلیسی Electron Beam Dose Distribution in the Presence of Non-Uniform Magnetic Field
چکیده انگلیسی مقاله Introduction Magnetic fields are capable of altering the trajectory of electron beams andcan be used in radiation therapy.Theaim of this study was to produce regions with dose enhancement and reduction in the medium. Materials and Methods The NdFeB permanent magnets were arranged on the electron applicator in several configurations. Then, after the passage of the electron beams (9 and 15 MeV Varian 2100C/D) through the non-uniform magnetic field, the Percentage Depth Dose(PDDs) on central axis and dose profiles in three depths for each energy were measured in a 3D water phantom. Results For all magnet arrangements and for two different energies, the surface dose increment and shift in depth of maximum dose (dmax) were observed. In addition, the pattern of dose distribution in buildup region was changed. Measurement of dose profile showed dose localization and spreading in some other regions. Conclusion The results of this study confirms that using magnetic field can alter the dose deposition patterns and as a result can produce dose enhancement as well as dose reduction in the medium using high-energy electron beams. These effects provide dose distribution with arbitrary shapes for use in radiation therapy.
کلیدواژه‌های انگلیسی مقاله Electron Beam, Magnetic Field, Radiation Therapy
نویسندگان مقاله محمد جواد طهماسبی بیرگانی | mohamad javad tahmasebi birgani
department of medical physics, jundishapuruniversity of medical sciences, ahvaz, iran


محمدرضا بیاتیانی | mohamad reza bayatiani
radiotherapy and medical physics department of arak university of medical sciences amp;amp;khansari hospital, arak, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی اراک (Arak university of medical sciences)

فاطمه سیف | fatemeh seif
radiotherapy and medical physics department of arak university of medical sciences amp;amp;khansari hospital, arak, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی اراک (Arak university of medical sciences)

منصور ذبیح زاده | mansur zabihzadeh
department of medical physics, jundishapuruniversity of medical sciences, ahvaz, iran


حجت اله شهبازیان | hojatolah shahbazian
department of medical physics, jundishapuruniversity of medical sciences, ahvaz, iran
نشانی اینترنتی http://ijmp.mums.ac.ir/article_2630.html
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Original Paper
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