نتایج جستجو برای: Patient setup

تعداد نتایج: 741784  

Journal: :iranian journal of medical physics 0
payam samadi miandoab department of electrical and computer engineering, medical radiation group, graduate university of advanced technology, haft bagh highway, knowledge paradise, kerman, iran. ahmad esmaili torshabi department of electrical and computer engineering, medical radiation group, graduate university of advanced technology, haft bagh highway, knowledge paradise, kerman, iran. saber nankali department of electrical and computer engineering, medical radiation group, graduate university of advanced technology, haft bagh highway, knowledge paradise, kerman, iran. mohammad reza rezaie department of electrical and computer engineering, medical radiation group, graduate university of advanced technology, haft bagh highway, knowledge paradise, kerman, iran.

introduction patient set-up optimization is required in radiotherapy to fill the accuracy gap between personalized treatment planning and uncertainties in the irradiation set-up. in this study, we aimed to develop a new method based on neural network to estimate patient geometrical setup using 4-dimensional (4d) xcat anthropomorphic phantom. materials and methods to access 4d modeling of motion...

Introduction Patient set-up optimization is required in radiotherapy to fill the accuracy gap between personalized treatment planning and uncertainties in the irradiation set-up. In this study, we aimed to develop a new method based on neural network to estimate patient geometrical setup using 4-dimensional (4D) XCAT anthropomorphic phantom. Materials and Methods To access 4D modeling of motion...

Introduction: This study examined the dosimetric effects based on the rotational setup error to correct patient setup errors occur during volumetric modulated arc radiotherapy (VMAT) for brain tumor patients. Material and Methods: This study included 1129 cases of cone beam computed tomography (CBCT) images obtained from 46 brain tumor patients, who experienced VMAT and used the 6DoF (degree o...

Journal: :Int. J. Comput. Geometry Appl. 2006
Moshe Dror Yusin Lee James B. Orlin Valentin Polishchuk

This paper introduces a new notion related to the traveling salesperson problem (TSP) — the notion of the TSP ratio. The TSP ratio of a TSP instance I is the sum of the marginal values of the nodes of I divided by the length of the optimal TSP tour on I, where the marginal value of a node i ∈ I is the difference between the length of the optimal tour on I and the length of the optimal tour on I...

Journal: :journal of dental research, dental clinics, dental prospects 0
farzaneh kaviani masume johari farzad esmaeili

background and aim. knowledge of the common radiographic errors and their prevention could prevent imposing redundant radiation, time and money to patient and the dentist. the aim of this study was to assess the common radiographic errors on panoramic radiographs in a radiology department. materials and methods. 250 panoramic radiographs (100 male and 150 female; mean age, 24.3) taken at the de...

Journal: :Radiotherapy and Oncology 2018

Journal: :Journal of Medical Imaging and Radiation Sciences 2015

Journal: :journal of biomedical physics and engineering 0
b farhood tehran university of medical science m t bahreyni toossi medical physics department, faculty of medicine, mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه تهران (tehran university) h vosoughi medical physics department, faculty of medicine, mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) s khademi medical physics research center,mashhad university of medical sciences,mashhad,iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) c knaup comprehensive cancer centers of nevada, las vegas, nevada, usaسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences)

background: breast cancer is the most frequently diagnosed cancer and the leading global cause of cancer death among women worldwide. radiotherapy plays a significant role in treatment of breast cancer and reduces locoregional recurrence and eventually improves survival. the treatment fields applied for breast cancer treatment include: tangential, axillary, supraclavicular and internal mammary ...

2015
Saskia Petillion Karolien Verhoeven Caroline Weltens Frank Van den Heuvel

Quantification of the setup errors is vital to define appropriate setup margins preventing geographical misses. The no-action-level (NAL) correction protocol reduces the systematic setup errors and, hence, the setup margins. The manual entry of the setup corrections in the record-and-verify software, however, increases the susceptibility of the NAL protocol to human errors. Moreover, the impact...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید