Matches in SemOpenAlex for { <https://semopenalex.org/work/W2465398411> ?p ?o ?g. }
Showing items 1 to 78 of
78
with 100 items per page.
- W2465398411 abstract "Purpose:to evaluate the performance and stability of the Elekta Agility MLC model using an automated quality control (QC) test in combination with statistical process control tools.Methods:Leaf positions were collected daily for 11 Elekta units over 5–19 months using the automated QC test, which analyzes 23 MV images to determine the location of MLC leaves relative to the radiation isocenter. The leaf positions are measured at 5 nominal positions, and images are acquired at collimator 0° and 180° to capture all MLC leaves in the field-of-view. Leaf positioning accuracy was assessed using individual and moving range control charts. Control limits were recomputed following MLC recalibration (occurred 1–2 times for 4 units). Specification levels of ±0.5, ±1 and ±1.5mm were tested. The mean and range of duration between out-of-control and out-of-specification events were determined.Results:Leaf position varied little over time, as confirmed by very tight individual control limits (mean ±0.19mm, range 0.09–0.44). Mean leaf position error was −0.03mm (range −0.89–0.83). Due to sporadic out-of-control events, the mean in-control duration was 3.3 days (range 1–23). Data stayed within ±1mm specification for 205 days on average (range 3–372) and within ±1.5mm for the entire date range. Measurements stayed within ±0.5mm for 1 day on average (range 0–17); however, our MLC leaves were not calibrated to this level of accuracy.Conclusion:The Elekta Agility MLC model was found to perform with high stability, as evidenced by the tight control limits. The in-specification durations support the current recommendation of monthly MLC QC tests with a ±1mm tolerance. Future work is on-going to determine if Agility performance can be optimized further using high-frequency QC test results to drive recalibration frequency. Factors that can affect leaf positioning accuracy, including beam spot motion, leaf gain calibration, drifting leaves, and image artifacts, are under investigation." @default.
- W2465398411 created "2016-07-22" @default.
- W2465398411 creator A5009886688 @default.
- W2465398411 creator A5049011377 @default.
- W2465398411 creator A5080794668 @default.
- W2465398411 date "2016-06-01" @default.
- W2465398411 modified "2023-09-27" @default.
- W2465398411 title "SU-D-201-04: Evaluation of Elekta Agility MLC Performance Using Statistical Process Control" @default.
- W2465398411 doi "https://doi.org/10.1118/1.4955616" @default.
- W2465398411 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/28048433" @default.
- W2465398411 hasPublicationYear "2016" @default.
- W2465398411 type Work @default.
- W2465398411 sameAs 2465398411 @default.
- W2465398411 citedByCount "1" @default.
- W2465398411 countsByYear W24653984112017 @default.
- W2465398411 crossrefType "journal-article" @default.
- W2465398411 hasAuthorship W2465398411A5009886688 @default.
- W2465398411 hasAuthorship W2465398411A5049011377 @default.
- W2465398411 hasAuthorship W2465398411A5080794668 @default.
- W2465398411 hasConcept C104293457 @default.
- W2465398411 hasConcept C111919701 @default.
- W2465398411 hasConcept C113644684 @default.
- W2465398411 hasConcept C120665830 @default.
- W2465398411 hasConcept C121332964 @default.
- W2465398411 hasConcept C127413603 @default.
- W2465398411 hasConcept C146978453 @default.
- W2465398411 hasConcept C181401712 @default.
- W2465398411 hasConcept C204323151 @default.
- W2465398411 hasConcept C2779200277 @default.
- W2465398411 hasConcept C2989005 @default.
- W2465398411 hasConcept C33923547 @default.
- W2465398411 hasConcept C41008148 @default.
- W2465398411 hasConcept C44154836 @default.
- W2465398411 hasConcept C71924100 @default.
- W2465398411 hasConcept C98045186 @default.
- W2465398411 hasConceptScore W2465398411C104293457 @default.
- W2465398411 hasConceptScore W2465398411C111919701 @default.
- W2465398411 hasConceptScore W2465398411C113644684 @default.
- W2465398411 hasConceptScore W2465398411C120665830 @default.
- W2465398411 hasConceptScore W2465398411C121332964 @default.
- W2465398411 hasConceptScore W2465398411C127413603 @default.
- W2465398411 hasConceptScore W2465398411C146978453 @default.
- W2465398411 hasConceptScore W2465398411C181401712 @default.
- W2465398411 hasConceptScore W2465398411C204323151 @default.
- W2465398411 hasConceptScore W2465398411C2779200277 @default.
- W2465398411 hasConceptScore W2465398411C2989005 @default.
- W2465398411 hasConceptScore W2465398411C33923547 @default.
- W2465398411 hasConceptScore W2465398411C41008148 @default.
- W2465398411 hasConceptScore W2465398411C44154836 @default.
- W2465398411 hasConceptScore W2465398411C71924100 @default.
- W2465398411 hasConceptScore W2465398411C98045186 @default.
- W2465398411 hasLocation W24653984111 @default.
- W2465398411 hasOpenAccess W2465398411 @default.
- W2465398411 hasPrimaryLocation W24653984111 @default.
- W2465398411 hasRelatedWork W1001878106 @default.
- W2465398411 hasRelatedWork W1204083803 @default.
- W2465398411 hasRelatedWork W1980699987 @default.
- W2465398411 hasRelatedWork W1993089837 @default.
- W2465398411 hasRelatedWork W1997125839 @default.
- W2465398411 hasRelatedWork W2048848442 @default.
- W2465398411 hasRelatedWork W2079751479 @default.
- W2465398411 hasRelatedWork W2089728903 @default.
- W2465398411 hasRelatedWork W2116644965 @default.
- W2465398411 hasRelatedWork W2142708001 @default.
- W2465398411 hasRelatedWork W2468920694 @default.
- W2465398411 hasRelatedWork W2472680776 @default.
- W2465398411 hasRelatedWork W2547739725 @default.
- W2465398411 hasRelatedWork W2773966303 @default.
- W2465398411 hasRelatedWork W2797171963 @default.
- W2465398411 hasRelatedWork W2952277414 @default.
- W2465398411 hasRelatedWork W2957108461 @default.
- W2465398411 hasRelatedWork W2999967864 @default.
- W2465398411 hasRelatedWork W3029960410 @default.
- W2465398411 hasRelatedWork W986307532 @default.
- W2465398411 isParatext "false" @default.
- W2465398411 isRetracted "false" @default.
- W2465398411 magId "2465398411" @default.
- W2465398411 workType "article" @default.