Matches in SemOpenAlex for { <https://semopenalex.org/work/W2008536695> ?p ?o ?g. }
Showing items 1 to 82 of
82
with 100 items per page.
- W2008536695 endingPage "2599" @default.
- W2008536695 startingPage "2598" @default.
- W2008536695 abstract "Purpose: To measure the dose uncertainty due to motion-induced depth changes in energy-stacked proton fields. Method and Materials: In energy-stacked proton beams the spread-out Bragg peak (SOBP) is generated by delivering the energy layers sequentially. In the presence of motion the depth of a point can change between the different energy layers, generating uncertainty compared to the planned dose. The magnitude of the uncertainty depends on the time-structure of the dose delivery, and the frequency and amplitude of the depth variations. We add wax strips to the outside of a 4D Dynamic Thorax Phantom (CIRS). The strips are 1.5cm wide and 0.5 or 1.0cm thick. A cc04 ionization chamber (IBA Dosimetry) is moved perpendicularly behind the strips, at various amplitude and frequency. The proton field is delivered using both energy-stacking and ‘quasi-instantaneous’ for comparison. For each combination of motion and field delivery the dose is measured ten times to determine the statistical variation. A Matlab program determines the expected error in dose based on the time-structure of both the motion and dose delivery. Results: Motion at 5.0cm depth behind 0.5cm strips, at a frequency of 0.25Hz, in a field with a range of 8.0g/cm2, modulation width of 6.0g/cm2, dose rate of 2Gy/min, total dose of 50cGy, gives a maximum error in dose of 7.4%. Decreasing the dose rate to 1Gy/min reduces the error to 5.3%. Conclusion: Motion-induced variations in depth can lead to clinically significant dose uncertainties." @default.
- W2008536695 created "2016-06-24" @default.
- W2008536695 creator A5047140124 @default.
- W2008536695 date "2009-06-01" @default.
- W2008536695 modified "2023-09-23" @default.
- W2008536695 title "SU-FF-T-335: Dose Uncertainty Due to Motion-Induced Depth Changes in Energy-Stacked Proton Beams" @default.
- W2008536695 doi "https://doi.org/10.1118/1.3181816" @default.
- W2008536695 hasPublicationYear "2009" @default.
- W2008536695 type Work @default.
- W2008536695 sameAs 2008536695 @default.
- W2008536695 citedByCount "0" @default.
- W2008536695 crossrefType "journal-article" @default.
- W2008536695 hasAuthorship W2008536695A5047140124 @default.
- W2008536695 hasConcept C104293457 @default.
- W2008536695 hasConcept C120665830 @default.
- W2008536695 hasConcept C121332964 @default.
- W2008536695 hasConcept C145148216 @default.
- W2008536695 hasConcept C151770136 @default.
- W2008536695 hasConcept C159985019 @default.
- W2008536695 hasConcept C180205008 @default.
- W2008536695 hasConcept C185544564 @default.
- W2008536695 hasConcept C186370098 @default.
- W2008536695 hasConcept C192562407 @default.
- W2008536695 hasConcept C198291218 @default.
- W2008536695 hasConcept C200925200 @default.
- W2008536695 hasConcept C204323151 @default.
- W2008536695 hasConcept C2779244869 @default.
- W2008536695 hasConcept C2780944729 @default.
- W2008536695 hasConcept C2781298738 @default.
- W2008536695 hasConcept C2989005 @default.
- W2008536695 hasConcept C30475298 @default.
- W2008536695 hasConcept C54516573 @default.
- W2008536695 hasConcept C62520636 @default.
- W2008536695 hasConcept C63007395 @default.
- W2008536695 hasConcept C71924100 @default.
- W2008536695 hasConcept C75088862 @default.
- W2008536695 hasConcept C90774946 @default.
- W2008536695 hasConceptScore W2008536695C104293457 @default.
- W2008536695 hasConceptScore W2008536695C120665830 @default.
- W2008536695 hasConceptScore W2008536695C121332964 @default.
- W2008536695 hasConceptScore W2008536695C145148216 @default.
- W2008536695 hasConceptScore W2008536695C151770136 @default.
- W2008536695 hasConceptScore W2008536695C159985019 @default.
- W2008536695 hasConceptScore W2008536695C180205008 @default.
- W2008536695 hasConceptScore W2008536695C185544564 @default.
- W2008536695 hasConceptScore W2008536695C186370098 @default.
- W2008536695 hasConceptScore W2008536695C192562407 @default.
- W2008536695 hasConceptScore W2008536695C198291218 @default.
- W2008536695 hasConceptScore W2008536695C200925200 @default.
- W2008536695 hasConceptScore W2008536695C204323151 @default.
- W2008536695 hasConceptScore W2008536695C2779244869 @default.
- W2008536695 hasConceptScore W2008536695C2780944729 @default.
- W2008536695 hasConceptScore W2008536695C2781298738 @default.
- W2008536695 hasConceptScore W2008536695C2989005 @default.
- W2008536695 hasConceptScore W2008536695C30475298 @default.
- W2008536695 hasConceptScore W2008536695C54516573 @default.
- W2008536695 hasConceptScore W2008536695C62520636 @default.
- W2008536695 hasConceptScore W2008536695C63007395 @default.
- W2008536695 hasConceptScore W2008536695C71924100 @default.
- W2008536695 hasConceptScore W2008536695C75088862 @default.
- W2008536695 hasConceptScore W2008536695C90774946 @default.
- W2008536695 hasIssue "6Part14" @default.
- W2008536695 hasLocation W20085366951 @default.
- W2008536695 hasOpenAccess W2008536695 @default.
- W2008536695 hasPrimaryLocation W20085366951 @default.
- W2008536695 hasRelatedWork W1963976717 @default.
- W2008536695 hasRelatedWork W2008536695 @default.
- W2008536695 hasRelatedWork W2018370769 @default.
- W2008536695 hasRelatedWork W2044851331 @default.
- W2008536695 hasRelatedWork W2058925620 @default.
- W2008536695 hasRelatedWork W2065496108 @default.
- W2008536695 hasRelatedWork W2072197736 @default.
- W2008536695 hasRelatedWork W2103275355 @default.
- W2008536695 hasRelatedWork W2148476181 @default.
- W2008536695 hasRelatedWork W3092451929 @default.
- W2008536695 hasVolume "36" @default.
- W2008536695 isParatext "false" @default.
- W2008536695 isRetracted "false" @default.
- W2008536695 magId "2008536695" @default.
- W2008536695 workType "article" @default.