نتایج جستجو برای: treatment planning system

تعداد نتایج: 3598653  

2016

Objective: A process and system of treatment planning is very important in radiation therapy. The features of the software and the accuracy in the dose calculation and dose distribution will affect to the treatment quality as well as the patient outcome. When a treatment planning system is applied in treatment at the first time, it should be checked and approved all its system information, feat...

Journal: :iranian journal of medical physics 0
seyed mohsen hosseini daghigh radiation medicine department, shahid beheshti university, tehran, iran

introduction interaluminal brachytherapy is one of the important methods of esophageal cancer treatment. the effect of applicator attenuation is not considered in dose calculation method released by aapm-tg43. in this study, the effect of high-dose rate (hdr) brachytherapy esophageal applicator on dose distribution was surveyed in hdr brachytherapy. materials and methods a cylindrical pmma phan...

Abaspour, Alireza , Khosroabadi, Mohsen , Naghiloo, Mahsa , Sadeghi, Hamid Reza , Sadoughi, Hamid-Reza ,

Introduction: Radiation therapy is one of the most important methods of cancer treatment. Radiation therapy uses symmetric and asymmetric fields in which the radiation dose distribution is different. To calculate the dose distribution, computer treatment planning systems are used which must have acceptable calculations accuracy. The aim of this study was to investigate the accuracy of the dose ...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد علوم دارویی - پژوهشکده علوم 1392

purpose a metabolic abnormality such as obesity is a major obstacle in the maintenance of the human health system and causes various chronic diseases including type 2 diabetes, hypertension, cardiovascular diseases, as well as various cancers. this study was designed to summarize the recent scientific knowledge regarding the anti-obesity role of curcumin (diferuloylmethane), which is isolated f...

آقامیری, محمودرضا , باغانی, حمیدرضا , حسینی دقیق, محسن , مهدوی, ربیع ,

Background and purpose: Dose calculations in trachea HDR brachytherapy treatment planning systems are greatly based on TG-43 protocol in which, all materials including air inside trachea are treated the same as water. The aim of this study was to survey the effect of air on dose calculations of Flexiplan treatment planning system in trachea HDR brachytherapy. Materials and methods: To ev...

Journal: :Vojnosanitetski Pregled 2022

Background/Aim. In the past two decades, we have witnessed emergence of new radiation therapy techniques, radiotherapy treatment planning system (TPS) with calculating algorithms for dosage calculation in a patient, units multislice computed tomography (CT) and image-guided delivery. The aim study was investigating significant difference dosimetric TPS relation to values obtained by measuring o...

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