Determination of the electronic portal imaging device pixel-sensitivity-map for quality assurance applications. Part 1: Comparison of methods.
Sign Up to like & getrecommendations! Published in 2022 at "Journal of applied clinical medical physics"
DOI: 10.1002/acm2.13603
Abstract: PURPOSE Calibration of a radiotherapy electronic portal imaging device (EPID) using the pixel-sensitivity-map (PSM) in place of the flood field correction improves the utility of the EPID for quality assurance applications. Multiple methods are available… read more here.
Keywords: imaging device; portal imaging; method; sensitivity map ... See more keywords
Variation in Elekta iView electronic portal imager pixel scale factor with gantry angle, and impact on multi‐leaf collimator quality assurance
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DOI: 10.1002/acm2.13661
Abstract: Abstract For Elekta Agility linear accelerators, the iViewGT electronic portal imaging device (EPID) is positioned at a nominal X‐Ray source‐to‐panel distance of 1600 mm. For display, image registration, and data processing purposes, the image pixels… read more here.
Keywords: electronic portal; leaf collimator; multi leaf; gantry ... See more keywords
Assessing the accuracy of electronic portal imaging device (EPID)-based dosimetry: I. Quantities influencing long-term stability.
Sign Up to like & getrecommendations! Published in 2021 at "Medical physics"
DOI: 10.1002/mp.15434
Abstract: 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 environmental… read more here.
Keywords: portal imaging; long term; electronic portal; term stability ... See more keywords
Oncology Nursing Perceptions of Patient Electronic Portal Use: A Qualitative Analysis
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DOI: 10.1188/17.onf.165-170
Abstract: Purpose/Objectives: To identify nursing staff reactions to and perceptions of electronic portal use in a cancer setting. Research Approach: Qualitative. Setting: Outpatient clinic at the Harold C. Simmons Comprehensive Cancer Center of the University of… read more here.
Keywords: portal use; analysis; oncology; electronic portal ... See more keywords
Setup in a clinical workflow and impact on radiotherapy routine of an in vivo dosimetry procedure with an electronic portal imaging device
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DOI: 10.1371/journal.pone.0192686
Abstract: High conformal techniques such as intensity-modulated radiation therapy and volumetric-modulated arc therapy are widely used in overloaded radiotherapy departments. In vivo dosimetric screening is essential in this environment to avoid important dosimetric errors. This work… read more here.
Keywords: imaging device; radiotherapy; procedure; dosimetry ... See more keywords
Validation of a simple technique for accurate treatment delivery for bilateral breast irradiation using the electronic portal imaging device
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DOI: 10.4103/jcrt.jcrt_1271_21
Abstract: Background and Aims: While bilateral breast cancer is rare, the challenge for the radiation oncologist is to limit the dose to multiple important organs-at-risk and reducing the chance of overlapping tangential fields to limit hotspots.… read more here.
Keywords: electronic portal; using electronic; bilateral breast; breast ... See more keywords
Simple Electronic Portal Imager-Based Pretreatment Quality Assurance using Acuros XB: A Feasibility Study
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DOI: 10.4103/jmp.jmp_84_19
Abstract: 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). Materials and Methods: Dynamic multileaf collimator intensity-modulated radiation therapy (IMRT)… read more here.
Keywords: pretreatment quality; fluence; study; heterogeneity ... See more keywords