Results 21 to 30 of about 40,542 (246)

Development of Artificial Intelligence as a Conversion Tool for Cine Electronic Portal Imaging Device Images to Radiotherapy Dosimetry: Preliminary Study [PDF]

Iranian Journal of Medical Physics, 2022
Introduction: This research is a preliminary study of the development of Artificial Intelligence (AI) as a conversion tool from the pixel value of Cine a-Si 1000 Electronic Portal Imaging Device (EPID) images to dose.
Muhammad Ramadhan, Wahyu Wibowo, Supriyanto Pawiro   +2 more
doaj   +1 more source

Evaluation of Patient Set Up Errors in Head and Neck Three-Dimensional (3D) Conformal and Intensity-Modulated Radiotherapy Using Electronic Portal Imaging Device [PDF]

Iranian Journal of Medical Physics, 2022
Introduction: Interfractional set-up variations may cause deviation of the delivered dose from the planned dose distribution. This study aimed at calculating random and systematic set-up errors using an electronic portal imaging device (EPID) to set the ...
Alireza Farajollahi, narjes mohammadzadeh, Mehdi Momennezhad, shahrokh naseri, shokoufeh mohebbi, Fateme Shahedi, shadi mohebbi   +6 more
doaj   +1 more source

A review of electronic portal imaging devices (EPIDs) [PDF]

Medical Physics, 1992
On‐line electronic portal imaging devices are beginning to come into clinical service in support of radiotherapy. A variety of technologies are being explored to provide real‐time or near real‐time images of patient anatomy within x‐ray fields during treatment on linear accelerators.
Boyer, Arthur L., Antonuk, Larry, Fenster, Aaron, Van Herk, Marcel, Meertens, Harm, Munro, Peter, Reinstein, Larry E., Wong, John   +7 more
openaire   +4 more sources

Assessment of using electronic portal imaging device for analysing bolus material utilised in radiation therapy

Open Chemistry, 2022
In this study, the feasibility of using electronic portal imaging device (EPID) as an analysing equipment for bolus material was evaluated in terms of its dosimetric parameters.
Özseven Alper
doaj   +1 more source

A High-Throughput In Vitro Radiobiology Platform for Megavoltage Photon Linear Accelerator Studies

Applied Sciences, 2022
We designed and developed a multiwell tissue culture plate irradiation setup, and intensity modulated radiotherapy plans were generated for 96-, 24-, and 6-well tissue culture plates.
Kamalram Thippu Jayaprakash, Denis Mostafa, Mohammad Hussein, Richard Shaffer, Agnieszka Michael, Mazhar Ajaz, Andrew Nisbet   +6 more
doaj   +1 more source

A remote EPID-based dosimetric TPS-planned audit of centers for clinical trials: outcomes and analysis of contributing factors

Radiation Oncology, 2018
Background A novel remote method for external dosimetric TPS-planned auditing of intensity modulated radiotherapy (IMRT) and volumetric modulated arc therapy (VMAT) for clinical trials using electronic portal imaging device (EPID) has been developed. The
Narges Miri, Kimberley Legge, Kim Colyvas, Joerg Lehmann, Philip Vial, Alisha Moore, Monica Harris, Peter B. Greer   +7 more
doaj   +1 more source

Physical characteristics of a commercial electronic portal imaging device [PDF]

Medical Physics, 1996
An electronic portal imaging device (EPID) for use in radiotherapy with high energy photons has been under development since 1985 and has been in clinical use since 1988. The x-ray detector consists of a metal plate/fluorescent screen combination, which is monitored by a charge-coupled device (CDD)-camera.
V G, Althof, J C, de Boer, H, Huizenga, J C, Stroom, A G, Visser, B N, Swanenburg   +5 more
openaire   +3 more sources

Simple electronic portal imager-based pretreatment quality assurance using Acuros XB: A feasibility study

Journal of Medical Physics, 2019
Objective: This study demonstrates a novel electronic portal imaging device (EPID)-based forward dosimetry approach for pretreatment quality assurance aided by a treatment planning system (TPS).
Arjunan Manikandan, Sureka Chandra Sekaran, Biplab Sarkar, Sujatha Manikandan   +3 more
doaj   +1 more source

Assessment of flatness and symmetry of megavoltage x-ray beam with an electronic portal imaging device (EPID) [PDF]

, 2002
Copyright © 2002 ACPSEM. All rights reserved. The document attached has been archived with permission from the publisher.The input/output characteristics of the Wellhofer BIS 710 electronic portal imaging device (EPID) have been investigated to establish
A. Curtin-Savard, D. M. Roback, D.A. Jaffray, E. Bezak, F. F. Yin, G. Liu, H. Meertens, IEC, IEC, J. Bijhold, J. Leong, J. M. Michalski, L. Ma, L. Ma, M. Herk van, M.C. Kirby, M.C. Kirby, P.T.R. Rodrigus el, R. Beollaard, T. R. McNutt, T. van Doorn, Wellhofer Dosimetrie   +21 more
core   +1 more source

IMRT QA using machine learning: A multi-institutional validation. [PDF]

, 2017
PurposeTo validate a machine learning approach to Virtual intensity-modulated radiation therapy (IMRT) quality assurance (QA) for accurately predicting gamma passing rates using different measurement approaches at different institutions.MethodsA Virtual ...
Chan, Maria F, Deasy, Joseph O, Lim, Seng Boh, Scheuermann, Ryan, Solberg, Timothy D, Valdes, Gilmer   +5 more
core   +2 more sources