FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2112108901> ?p ?o ?g. }

• W2112108901 endingPage "160" @default.
• W2112108901 startingPage "147" @default.
• W2112108901 abstract "Shewhart control charts have previously been suggested as a process control tool for use in routine linear accelerator (linac) output verifications. However, a comprehensive approach to process control has not been investigated for linac output verifications. The purpose of this work is to investigate a comprehensive process control approach to linac output constancy quality assurance (QA). The RBA-3 dose constancy check was used to verify outputs of photon beams and electron beams delivered by a Varian Clinac 21EX linac. The data were collected during 2009 to 2010. Shewhart-type control charts, exponentially weighted moving average (EWMA) charts, and capability indices were applied to these processes. The Shewhart-type individuals chart (X-chart) was used and the number of data points used to calculate the control limits was varied. The parameters tested for the EWMA charts (smoothing parameter (λ) and the control limit width (L)) were λ = 0.05, L = 2.492; λ = 0.10, L = 2.703; and λ = 0.20, L = 2.860, as well as the number of points used to estimate the initial process mean and variation. Lastly, the number of in-control data points used to determine process capability (C(p)) and acceptability (C(pk)) were investigated, comparing the first in-control run to the longest in-control run of the process data. C(p) and C(pk) values greater than 1.0 were considered acceptable. The 95% confidence intervals were reported. The X-charts detected systematic errors (e.g., device setup errors). In-control run lengths on the X-charts varied from 5 to 30 output measurements (about one to seven months). EWMA charts showed in-control runs ranging from 9 to 33 output measurements (about two to eight months). The C(p) and C(pk) ratios are higher than 1.0 for all energies, except 12 and 20 MeV. However, 10 MV and 6, 9, and 16 MeV were in question when considering the 95% confidence limits. The X-chart should be calculated using 8-12 data points. For EWMA chart, using 4 data points is sufficient to calculate the initial mean and variance of the process. The EWMA limits should be calculated with λ = 0.10, L = 2.703. At least 25-30 in-control data points should be used to calculate the C(p) and C(pk) indices." @default.
• W2112108901 created "2016-06-24" @default.
• W2112108901 creator A5012535350 @default.
• W2112108901 creator A5032912945 @default.
• W2112108901 creator A5062291713 @default.
• W2112108901 creator A5077536901 @default.
• W2112108901 date "2013-01-01" @default.
• W2112108901 modified "2023-09-26" @default.
• W2112108901 title "Retrospective analysis of linear accelerator output constancy checks using process control techniques" @default.
• W2112108901 cites W1593449005 @default.
• W2112108901 cites W1990807231 @default.
• W2112108901 cites W1991102697 @default.
• W2112108901 cites W2002824799 @default.
• W2112108901 cites W2021310026 @default.
• W2112108901 cites W2035834352 @default.
• W2112108901 cites W2037115489 @default.
• W2112108901 cites W2046644658 @default.
• W2112108901 cites W2057063836 @default.
• W2112108901 cites W2059520253 @default.
• W2112108901 cites W2088474235 @default.
• W2112108901 cites W2090082954 @default.
• W2112108901 cites W2094334086 @default.
• W2112108901 cites W2097736638 @default.
• W2112108901 cites W2100702360 @default.
• W2112108901 cites W2105874637 @default.
• W2112108901 cites W2114449716 @default.
• W2112108901 cites W2123616119 @default.
• W2112108901 cites W2123986860 @default.
• W2112108901 cites W2155939961 @default.
• W2112108901 cites W2161088630 @default.
• W2112108901 doi "https://doi.org/10.1120/jacmp.v14i1.4032" @default.
• W2112108901 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5713921" @default.
• W2112108901 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/23318390" @default.
• W2112108901 hasPublicationYear "2013" @default.
• W2112108901 type Work @default.
• W2112108901 sameAs 2112108901 @default.
• W2112108901 citedByCount "30" @default.
• W2112108901 countsByYear W21121089012014 @default.
• W2112108901 countsByYear W21121089012015 @default.
• W2112108901 countsByYear W21121089012016 @default.
• W2112108901 countsByYear W21121089012017 @default.
• W2112108901 countsByYear W21121089012018 @default.
• W2112108901 countsByYear W21121089012019 @default.
• W2112108901 countsByYear W21121089012020 @default.
• W2112108901 countsByYear W21121089012021 @default.
• W2112108901 countsByYear W21121089012022 @default.
• W2112108901 countsByYear W21121089012023 @default.
• W2112108901 crossrefType "journal-article" @default.
• W2112108901 hasAuthorship W2112108901A5012535350 @default.
• W2112108901 hasAuthorship W2112108901A5032912945 @default.
• W2112108901 hasAuthorship W2112108901A5062291713 @default.
• W2112108901 hasAuthorship W2112108901A5077536901 @default.
• W2112108901 hasBestOaLocation W21121089011 @default.
• W2112108901 hasConcept C105795698 @default.
• W2112108901 hasConcept C106436119 @default.
• W2112108901 hasConcept C111919701 @default.
• W2112108901 hasConcept C113644684 @default.
• W2112108901 hasConcept C120665830 @default.
• W2112108901 hasConcept C121332964 @default.
• W2112108901 hasConcept C127413603 @default.
• W2112108901 hasConcept C159848633 @default.
• W2112108901 hasConcept C166623804 @default.
• W2112108901 hasConcept C168834538 @default.
• W2112108901 hasConcept C180048950 @default.
• W2112108901 hasConcept C196985124 @default.
• W2112108901 hasConcept C21547014 @default.
• W2112108901 hasConcept C2778618615 @default.
• W2112108901 hasConcept C33923547 @default.
• W2112108901 hasConcept C41008148 @default.
• W2112108901 hasConcept C74746147 @default.
• W2112108901 hasConcept C98045186 @default.
• W2112108901 hasConceptScore W2112108901C105795698 @default.
• W2112108901 hasConceptScore W2112108901C106436119 @default.
• W2112108901 hasConceptScore W2112108901C111919701 @default.
• W2112108901 hasConceptScore W2112108901C113644684 @default.
• W2112108901 hasConceptScore W2112108901C120665830 @default.
• W2112108901 hasConceptScore W2112108901C121332964 @default.
• W2112108901 hasConceptScore W2112108901C127413603 @default.
• W2112108901 hasConceptScore W2112108901C159848633 @default.
• W2112108901 hasConceptScore W2112108901C166623804 @default.
• W2112108901 hasConceptScore W2112108901C168834538 @default.
• W2112108901 hasConceptScore W2112108901C180048950 @default.
• W2112108901 hasConceptScore W2112108901C196985124 @default.
• W2112108901 hasConceptScore W2112108901C21547014 @default.
• W2112108901 hasConceptScore W2112108901C2778618615 @default.
• W2112108901 hasConceptScore W2112108901C33923547 @default.
• W2112108901 hasConceptScore W2112108901C41008148 @default.
• W2112108901 hasConceptScore W2112108901C74746147 @default.
• W2112108901 hasConceptScore W2112108901C98045186 @default.
• W2112108901 hasIssue "1" @default.
• W2112108901 hasLocation W21121089011 @default.
• W2112108901 hasLocation W21121089012 @default.
• W2112108901 hasLocation W21121089013 @default.
• W2112108901 hasLocation W21121089014 @default.
• W2112108901 hasOpenAccess W2112108901 @default.
• W2112108901 hasPrimaryLocation W21121089011 @default.
• W2112108901 hasRelatedWork W158001369 @default.
• W2112108901 hasRelatedWork W2111026587 @default.

• next