Results 181 to 190 of about 25,468 (231)
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Medical Physics (Lancaster), 2021
PURPOSE The aim of this study is to reduce the uncertainty associated with determining dose-to-water using an amorphous silicon electronic portal imaging detector (EPID) under reference conditions by identifying and accounting for operational and ...
J. Renaud, B. Muir
semanticscholar +1 more source
PURPOSE The aim of this study is to reduce the uncertainty associated with determining dose-to-water using an amorphous silicon electronic portal imaging detector (EPID) under reference conditions by identifying and accounting for operational and ...
J. Renaud, B. Muir
semanticscholar +1 more source
Assessment of a commercial EPID dosimetry system to detect radiotherapy treatment errors
Biomedical engineering and physics express, 2021One method for detecting radiotherapy treatment errors is to capture the exit dose using an electronic portal imaging device. In comparison with a baseline integrated image, subsequent fractions can be compared and differences in images suggest a ...
P. Doolan +3 more
semanticscholar +1 more source
Medical Physics (Lancaster), 2020
PURPOSE We sought to develop machine learning models to detect multileaf collimator (MLC) modeling errors with the use of radiomic features of fluence maps measured in patient-specific quality assurance (QA) for intensity-modulated radiation therapy ...
Madoka Sakai +13 more
semanticscholar +1 more source
PURPOSE We sought to develop machine learning models to detect multileaf collimator (MLC) modeling errors with the use of radiomic features of fluence maps measured in patient-specific quality assurance (QA) for intensity-modulated radiation therapy ...
Madoka Sakai +13 more
semanticscholar +1 more source
Towards Formalization of Enhanced Privacy ID (EPID)-based Remote Attestation in Intel SGX
Euromicro Symposium on Digital Systems Design, 2020Vulnerabilities in privileged software layers have been exploited with severe consequences. Recently, Trusted Execution Environments (TEEs) based technologies have emerged as a promising approach since they claim strong confidentiality and integrity ...
Muhammad Usama Sardar +2 more
semanticscholar +1 more source
Medical Physics (Lancaster), 2021
PURPOSE The aim of this study is to reduce the uncertainty associated with determining dose-to-water using an amorphous silicon electronic portal imaging detector (EPID) under reference conditions by developing a direct calibration formalism based on ...
J. Renaud, B. Muir
semanticscholar +1 more source
PURPOSE The aim of this study is to reduce the uncertainty associated with determining dose-to-water using an amorphous silicon electronic portal imaging detector (EPID) under reference conditions by developing a direct calibration formalism based on ...
J. Renaud, B. Muir
semanticscholar +1 more source
Medical Physics, 2001
There has been an increasing interest in the application of electronic portal imaging devices (EPIDs) to dosimetric verification, particularly for intensity modulated radiotherapy. Although not water equivalent, the phantom scatter factor of an EPID, is generally assumed to be that of a full phantom, a slab phantom, or a mini phantom.
J, Chang +3 more
openaire +2 more sources
There has been an increasing interest in the application of electronic portal imaging devices (EPIDs) to dosimetric verification, particularly for intensity modulated radiotherapy. Although not water equivalent, the phantom scatter factor of an EPID, is generally assumed to be that of a full phantom, a slab phantom, or a mini phantom.
J, Chang +3 more
openaire +2 more sources
WE‐G‐BRB‐02: MU‐EPID an EPID Based Tool for IMRT Quality Assurance
Medical Physics, 2012Purpose: A software program (MU‐EPID) has been developed to perform patient specific IMRT pre‐treatment QA verification using an electronic portal imaging device. Methods: The software converts measured images of intensity modulated beams delivered to an EPID, into fluence maps that can be imported in the treatment planning system. The dose can then be
L Vazquez, Quino +5 more
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Physics in Medicine and Biology
Objective. The primary purpose of this work is to demonstrate the feasibility of a deep convolutional neural network (dCNN) based algorithm that uses two-dimensional (2D) electronic portal imaging device (EPID) images and CT images as input to ...
Ning Gao +8 more
semanticscholar +1 more source
Objective. The primary purpose of this work is to demonstrate the feasibility of a deep convolutional neural network (dCNN) based algorithm that uses two-dimensional (2D) electronic portal imaging device (EPID) images and CT images as input to ...
Ning Gao +8 more
semanticscholar +1 more source
Displays, 2006
Electrophoretic image displays (EPIDs) are a very promising solution in the search for low-power, paper like reflective displays. While the technology is already mature, little is known about the internal physical properties. In this paper, we will describe which elements contribute to the charge transport and give an explanation of the steady state ...
Bert, Tom +3 more
openaire +2 more sources
Electrophoretic image displays (EPIDs) are a very promising solution in the search for low-power, paper like reflective displays. While the technology is already mature, little is known about the internal physical properties. In this paper, we will describe which elements contribute to the charge transport and give an explanation of the steady state ...
Bert, Tom +3 more
openaire +2 more sources
Electrophoretic image display (EPID) panel
Proceedings of the IEEE, 1973A new reflective-type electrophoretic image display (EPID) panel is described which is based on electrophoresis. In the EPID panel, a suspension is mainly composed of pigment particles and a suspending liquid. A dc voltage applied across a suspension layer changes the reflective color of the suspension as a result of the electrophoretic migration of ...
I. Ota, J. Ohnishi, M. Yoshiyama
openaire +1 more source