نتایج جستجو برای: step and shoot radiation therapy

تعداد نتایج: 17019729  

2013
Ying Sun Rui Guo Wen-Jing Yin Ling-Long Tang Xiao-Li Yu Mo Chen Zhen-Yu Qi Meng-Zhong Liu Jun Ma

BACKGROUND To compare volumetric modulated arc therapy (VMAT) with conventional step and shoot intensity modulated radiation therapy (s-IMRT) in nasopharyngeal carcinoma (NPC) patients, and identify which T category patient gains the maximum benefit from VMAT. METHODS Fifty-two patients that randomly selected from 205 patients received VMAT at a single center were retrospectively replanned wi...

Background: Image-guided radiotherapy used multiple imaging during the radiation therapy course to improve the precision and accuracy of health care provider's treatment. Objectives: This study aims to assess the safety, effectiveness and economic aspects of image-guided radiation therapy for decision-making about this technology in Iran. Methods: In this study, the most important med...

2017
Lin Su Iulian Iordachita Yin Zhang Junghoon Lee Sook Kien Ng Juan Jackson Ted Hooker John Wong Joseph M. Herman H. Tutkun Sen Peter Kazanzides Muyinatu A. Lediju Bell Chen Yang Kai Ding

PURPOSE Stereotactic body radiation therapy (SBRT) allows for high radiation doses to be delivered to the pancreatic tumors with limited toxicity. Nevertheless, the respiratory motion of the pancreas introduces major uncertainty during SBRT. Ultrasound imaging is a non-ionizing, non-invasive, and real-time technique for intrafraction monitoring. A configuration is not available to place the ult...

Journal: :medical journal of islamic republic of iran 0
farshad najafipour faculty of medicine, aja university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی ارتش (artesh university of medical sciences) pejman hamouzadeh school of public health, tehran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) jalal arabloo iran university of medical sciences & dept. of health management and economics, school of public health, tehran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) mohammadreza mobinizadeh science and research branch, islamic azad university, tehran, iran.سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch) amir norouzi iran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences)

background: intra-operative radiation therapy (iort) is the transfer of a single large radiation dose to the tumor bed during surgery with the final goal of improving regional tumor control. this study aimed to investigate the safety, effectiveness and economic evaluation of intra-operative radiation therapy.   methods : the scientific literature was searched in the main biomedical databases (c...

Journal: :medical journal of islamic republic of iran 0
m.j. tahmasebi birgani medical physics and radiation therapy departments, jundishapur university of medicalsciences, ahwaz, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی جندی شاپور اهواز (ahvaz jundishapur university of medical sciences) m. ansari radiation therapy department, jundishapur university of medical sciences, ahwaz, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی جندی شاپور اهواز (ahvaz jundishapur university of medical sciences) m.a. behrooz medical physics department, jundishapur university of medical sciences, ahwaz, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی جندی شاپور اهواز (ahvaz jundishapur university of medical sciences)

abstract background: adjacent treatment fields are commonly used in external beam radiation therapy, such as mantle and inverted-y fields for the treatment of hodgkin’s disease and craniospinal fields used in the treatment of medulloblastoma and head and neck tumors when the lateral neck fields are placed adjacent to the anterior supraclavicular field. in each of these situations, there is a po...

Journal: :iranian journal of radiation research 0
w. kim department of radiation oncology, biomedical research institute, pusan national university hospital and pusan national university school of medicine, busan w. kim department of radiation oncology, biomedical research institute, pusan national university hospital and pusan national university school of medicine, busan y. kim department of radiation oncology, biomedical research institute, pusan national university hospital and pusan national university school of medicine, busan d. kim department of radiation oncology, biomedical research institute, pusan national university hospital and pusan national university school of medicine, busan j. bae department of radiation oncology, biomedical research institute, pusan national university hospital and pusan national university school of medicine, busan d. park department of radiation oncology, biomedical research institute, pusan national university hospital and pusan national university school of medicine, busan

background: fatigue is a common side effect in cancer patients undergoing radiation therapy (rt). radiation-induced fatigue affects the quality of life, but there is no definitive treatment option. in this study, the weight-loaded forced swim test was performed to assess the effect of coenzyme q10 (coq10) on radiation-induced fatigue. materials and methods: a total of 60 rats were divided rando...

Journal: :iranian journal of radiation research 0
k. ghazi-khanlou sani department of radiology, hamadan university of medical sciences, hamadan, iran m. mohammadi department of medical physics, hamadan university of medical sciences, hamadan, iran a. eskandarlo department of radiology, hamadan university of medical sciences, hamadan, iran h. gholam-hosseinian department of radiotherapy, mash-had university of medical sciences, mash-had, iran

background: in conventional radiation therapy, regarding normal tissue tolerance, the treatment of bulk tumors is one of the remaining challenges. grid radiation therapy (grt) is a technique to deliver high doses, approximately 15 – 20 gy per fraction, to several small volumes located in a large radiation field. this can be performed using a grid block. the current work has concentrated on the ...

عابدزاده, مهدی, پوراکبر, لطیفه,

Effects of ozone depletion and increase of UV radiation have been studied by many researchers. The aim of this study was to investigate the effects of UV-B radiation on Melissa officinalis L. as well as the impact of salicylic acid and magnetic fields in the reduction of harmful effects of radiation on plants. The Melissa officinalis L. plants were treated with 28 ± 2 Cº for approxi...

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