Matches in SemOpenAlex for { <https://semopenalex.org/work/W2046471904> ?p ?o ?g. }
Showing items 1 to 66 of
66
with 100 items per page.
- W2046471904 abstract "Purpose: To develop a strategy for defining meaningful tolerance limits and studying the sensitivity of IMRT QA gamma criteria by inducing known errors in QA plans. Methods: IMRT QA measurements (ArcCHECK, Sun Nuclear) were compared to QA plan calculations with induced errors. Many (>24) gamma comparisons between data and calculations were performed for each of several kinds of cases and classes of induced error types with varying magnitudes (e.g. MU errors ranging from -10% to +10%), resulting in over 3,000 comparisons. Gamma passing rates for each error class and case were graphed against error magnitude to create error curves in order to represent the range of missed errors in routine IMRT QA using various gamma criteria. Results: This study demonstrates that random, case-specific, and systematic errors can be detected by the error curve analysis. Depending on location of the peak of the error curve (e.g., not centered about zero), 3%/3mm threshold=10% criteria may miss MU errors of up to 10% and random MLC errors of up to 5 mm. Additionally, using larger dose thresholds for specific devices may increase error sensitivity (for the same X%/Ymm criteria) by up to a factor of two. This analysis will allow clinics to selectmore » more meaningful gamma criteria based on QA device, treatment techniques, and acceptable error tolerances. Conclusion: We propose a strategy for selecting gamma parameters based on the sensitivity of gamma criteria and individual QA devices to induced calculation errors in QA plans. Our data suggest large errors may be missed using conventional gamma criteria and that using stricter criteria with an increased dose threshold may reduce the range of missed errors. This approach allows quantification of gamma criteria sensitivity and is straightforward to apply to other combinations of devices and treatment techniques.« less" @default.
- W2046471904 created "2016-06-24" @default.
- W2046471904 creator A5018298330 @default.
- W2046471904 creator A5066130545 @default.
- W2046471904 date "2014-05-29" @default.
- W2046471904 modified "2023-09-23" @default.
- W2046471904 title "TU-C-BRE-08: IMRT QA: Selecting Meaningful Gamma Criteria Based On Error Detection Sensitivity" @default.
- W2046471904 doi "https://doi.org/10.1118/1.4889271" @default.
- W2046471904 hasPublicationYear "2014" @default.
- W2046471904 type Work @default.
- W2046471904 sameAs 2046471904 @default.
- W2046471904 citedByCount "0" @default.
- W2046471904 crossrefType "journal-article" @default.
- W2046471904 hasAuthorship W2046471904A5018298330 @default.
- W2046471904 hasAuthorship W2046471904A5066130545 @default.
- W2046471904 hasConcept C103088060 @default.
- W2046471904 hasConcept C105795698 @default.
- W2046471904 hasConcept C11413529 @default.
- W2046471904 hasConcept C127413603 @default.
- W2046471904 hasConcept C159985019 @default.
- W2046471904 hasConcept C192562407 @default.
- W2046471904 hasConcept C204323151 @default.
- W2046471904 hasConcept C21200559 @default.
- W2046471904 hasConcept C24326235 @default.
- W2046471904 hasConcept C33923547 @default.
- W2046471904 hasConcept C41008148 @default.
- W2046471904 hasConcept C73782692 @default.
- W2046471904 hasConceptScore W2046471904C103088060 @default.
- W2046471904 hasConceptScore W2046471904C105795698 @default.
- W2046471904 hasConceptScore W2046471904C11413529 @default.
- W2046471904 hasConceptScore W2046471904C127413603 @default.
- W2046471904 hasConceptScore W2046471904C159985019 @default.
- W2046471904 hasConceptScore W2046471904C192562407 @default.
- W2046471904 hasConceptScore W2046471904C204323151 @default.
- W2046471904 hasConceptScore W2046471904C21200559 @default.
- W2046471904 hasConceptScore W2046471904C24326235 @default.
- W2046471904 hasConceptScore W2046471904C33923547 @default.
- W2046471904 hasConceptScore W2046471904C41008148 @default.
- W2046471904 hasConceptScore W2046471904C73782692 @default.
- W2046471904 hasLocation W20464719041 @default.
- W2046471904 hasOpenAccess W2046471904 @default.
- W2046471904 hasPrimaryLocation W20464719041 @default.
- W2046471904 hasRelatedWork W1973590334 @default.
- W2046471904 hasRelatedWork W1977893428 @default.
- W2046471904 hasRelatedWork W2004836495 @default.
- W2046471904 hasRelatedWork W2005157740 @default.
- W2046471904 hasRelatedWork W2025415350 @default.
- W2046471904 hasRelatedWork W2026755438 @default.
- W2046471904 hasRelatedWork W2028448259 @default.
- W2046471904 hasRelatedWork W2036292658 @default.
- W2046471904 hasRelatedWork W2071124565 @default.
- W2046471904 hasRelatedWork W2073636894 @default.
- W2046471904 hasRelatedWork W2075917068 @default.
- W2046471904 hasRelatedWork W2077200403 @default.
- W2046471904 hasRelatedWork W2216663072 @default.
- W2046471904 hasRelatedWork W2353167763 @default.
- W2046471904 hasRelatedWork W2469105465 @default.
- W2046471904 hasRelatedWork W2472443435 @default.
- W2046471904 hasRelatedWork W2749375587 @default.
- W2046471904 hasRelatedWork W2785206753 @default.
- W2046471904 hasRelatedWork W2789597473 @default.
- W2046471904 hasRelatedWork W2964998168 @default.
- W2046471904 isParatext "false" @default.
- W2046471904 isRetracted "false" @default.
- W2046471904 magId "2046471904" @default.
- W2046471904 workType "article" @default.