نتایج جستجو برای: treatment planning software

تعداد نتایج: 1975448  

Journal: :iranian journal of medical physics 0
vahid moslemi m.sc. in medical radiation engineering, medical radiation dept., faculty of mechanical engineering, shiraz university, shiraz, iran ahmad esmaili-torshabi m.sc. in medical radiation engineering, medical radiation dept., faculty of mechanical engineering, shiraz university, shiraz, iran mohammad amin mosleh-shirazi assistant professor, radiotherapy and oncology dept., center of research in medical physics and engineering, shiraz university of medical sciences, shiraz, iran reza faghihi assistant professor, nuclear engineering, center of radiation research, shiraz university, shiraz, iran ahmad mosalaei professor, radiotherapy and oncology dept., shiraz university of medical sciences, shiraz, iran simin mehdizadeh m.sc., nuclear engineering, center of radiation research, shiraz university, shiraz, iran

introduction: in brachytherapy, radioactive sources are placed close to the tumor, therefore, small changes in their positions can cause large changes in the dose distribution. this emphasizes the need for computerized treatment planning. the usual method for treatment planning of cervix brachytherapy uses conventional radiographs in the manchester system. nowadays, because of their advantages ...

Journal: :iranian journal of medical physics 0
reza faghihi assistant professor, medical radiation department and radiation research center, school of engineering, shiraz university, shiraz, iran mohammad amin mosleh-shirazi assistant professor, radiotherapy department and center for research in medical physics and biomedical engineering, shiraz university of medical sciences, shiraz, iran fatemeh moradi-mocarram m.sc. in medical radiation, school of engineering, shiraz university, shiraz, iran

introduction: the selection of suitable beam angles and weights in external-beam radiotherapy is at present generally based upon the experience of the planner. therefore, automated selection of beam angles and weights in forward-planned radiotherapy will be beneficial. material and methods: in this work, an efficient method is presented within the matlab environment to investigate how to improv...

ژورنال: :مجله دانشکده پزشکی اصفهان 0
ویدا رضایی دانشجوی کارشناسی ارشد، گروه فیزیک پزشکی، دانشکده ی پزشکی، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران داریوش شهبازی گهرویی استاد، گروه فیزیک پزشکی، دانشکده ی پزشکی، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران استاد، گروه فیزیک پزشکی، دانشکده ی پزشکی، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران شهرام منادی کارشناسی ارشد، بخش رادیوتراپی، بیمارستان سیدالشهدا (ع)، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران محسن صائب دانشجوی دکتری، گروه فیزیک پزشکی، دانشکده ی پزشکی، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران

چکیده مقدمه: دریافت دز صحیح بیمار، نقش مهمی در نتیجه ی پرتودرمانی دارد. برای دستیابی به این هدف، از شیوه نامه ی tecdoc1583 استفاده شده است. هدف از انجام این مطالعه، ارزیابی مراحل مختلف طراحی درمان جهت محاسبه ی دز دقیق دریافتی بیمار و تطبیق آن با نتایج واقعی بود. روش ها: در این مطالعه، توزیع دز برای پرتوهای تک میدانی، چند میدانی و چند میدانی پیچیده با استفاده از محاسبات نرم افزار طراحی درمان tig...

Journal: :iranian journal of radiation research 0
h.r. baghani radiation medicine department, nuclear engineering faculty, shahid beheshti university, tehran, iran s.m.r. aghamiri radiation medicine department, nuclear engineering faculty, shahid beheshti university, tehran, iran h. gharaati radiotherapy physics department, cancer institute of tehran, tehran, iran s.r. mahdavi medical physics department, medical faculty, iran university of medical science, tehran, iran s.m. hosseini daghigh radiation medicine department, nuclear engineering faculty, shahid beheshti university, tehran, iran

background: craniospinal radiotherapy faces technical challenges which are due to the sensitivity of the location in which the gross tumor is, and to organs at risk around planning target volume. using modern treatment planning systems causes a reduction in the complexities of the treatment techniques. the most effective method to assess the dosimetric accuracy and the validity of the software ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده جغرافیا 1392

adolescents and young adults and their problems is an issue whose importance is obvious to anyone because youth are the founders of our countrys future and requires proper planning to be on leisure. given the importance of leisure,this study to investigate needs assessment and planning how adolescents and young adults spend their leisure time in urban of case study of high school girls and boys...

Ahmad Esmaili-Torshabi Ahmad Mosalaei Kamal Hadad Mohammad Amin Mosleh-Shirazi, Reza Faghihi, Simin Mehdizadeh Vahid Moslemi

Introduction: In brachytherapy, radioactive sources are placed close to the tumor, therefore, small changes in their positions can cause large changes in the dose distribution. This emphasizes the need for computerized treatment planning. The usual method for treatment planning of cervix brachytherapy uses conventional radiographs in the Manchester system. Nowadays, because of their advantages ...

Journal: :مجله دانشکده دندانپزشکی اصفهان 0
امید صوابی فرحناز نجاتی دانش علیرضا سعیدی اشکان مطیع omid savabi farahnaz nejatidanesh

introduction: a large number of software programs have been used in dentistry for diagnosis and treatment planning to date. however, due to promotion of programming languages and developments in dental sciences, it is necessary to develop and update these softwares. use of softwares for treatment planning for removable partial dentures has been popular for some time and always new softwares hav...

Journal: :iranian red crescent medical journal 0
sedigheh sina radiation research center, shiraz university, shiraz, ir iran reza faghihi radiation research center, shiraz university, shiraz, ir iran; department of nuclear engineering, shiraz university, shiraz, ir iran; radiation research center, shiraz university, shiraz, ir iran. tel: +98-7116473474, fax: +98-7116473474 ali soleimani meigooni department of nuclear engineering, shiraz university, shiraz, ir iran; comprehensive cancer center of nevada, las vegas, nevada, usa zahra siavashpour department of radiation medicine, shahid beheshti university, tehran, ir iran mohammad amin mosleh-shirazi center for research in medical physics and biomedical engineering, shiraz university of medical sciences, shiraz, ir iran; department of radiotherapy and oncology, shiraz university of medical sciences, shiraz, ir iran

conclusions according to the results, the old dosimetry formalisms, overestimate the dose especially towards the applicator’s tip. while the tg-43u1 based software perform the calculations more accurately. results for a typical arrangement of 10 active pellets in the applicator, the percentage difference between doses obtained by the new algorithm at 1cm distance from the tip of the applicator ...

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