Matches in SemOpenAlex for { <https://semopenalex.org/work/W2055143012> ?p ?o ?g. }
Showing items 1 to 75 of
75
with 100 items per page.
- W2055143012 endingPage "2334" @default.
- W2055143012 startingPage "2334" @default.
- W2055143012 abstract "Purpose: The purpose of this study was to evaluate volumetric kV Cone Beam CT (CBCT) image quality at different scan parameter settings in context to treatment planning tolerances. Method and Materials: Both large and small density phantoms with eight density inserts were scanned by GE LS CT/PET system, as well as the Varian's OBITM system in half fan and full fan scanning modes. Scans for CBCT images were performed at different tube currents (20-, 40- and 80-mA) and source-imager distance (SID) (150cm and 160cm) after prior calibration of each mode. Deviation of the Hounsfield Unit (HU) values at different settings compared to conventional kV CT images were obtained for further evaluation. We also adjusted the CT number in CT images to simulate CBCT artifacts that was not produced by our experiments, and to see how much degradation of image would violate dosimetric feasibility of CBCT based treatment planning. Treatment plans for single beam or multiple beams were calculated based on CT, CBCT and modified CT images for various phantoms geometries and patients. Results and Conclusions: Results show that the HU for different anatomies in the body have different amount of change for different scan parameters settings (including current, SID and fan angle used) for CBCT image acquisition. Larger variations in HU appeared in lung and dense bone regions, compared to those with HU closer to tissue. Maximum variations in HU were found in the images with data truncation. Dose profiles, dose volume histograms, isodose distributions and Gamma values of CBCT based plan with images scanned at full fan mode agree relatively well with CT based plan. Larger dose discrepancy appears in lung or dense bone region. Results from the CT-modified images based plans show that the dosimetric error becomes significant as the HU variation goes beyond 50." @default.
- W2055143012 created "2016-06-24" @default.
- W2055143012 creator A5005665597 @default.
- W2055143012 creator A5020925351 @default.
- W2055143012 creator A5083147441 @default.
- W2055143012 date "2007-06-01" @default.
- W2055143012 modified "2023-09-23" @default.
- W2055143012 title "SU-EE-A3-05: Evaluation of Kilo-Voltage Cone Beam CT Image Quality in Context to Dose Re-Computation" @default.
- W2055143012 doi "https://doi.org/10.1118/1.2760362" @default.
- W2055143012 hasPublicationYear "2007" @default.
- W2055143012 type Work @default.
- W2055143012 sameAs 2055143012 @default.
- W2055143012 citedByCount "3" @default.
- W2055143012 countsByYear W20551430122016 @default.
- W2055143012 crossrefType "journal-article" @default.
- W2055143012 hasAuthorship W2055143012A5005665597 @default.
- W2055143012 hasAuthorship W2055143012A5020925351 @default.
- W2055143012 hasAuthorship W2055143012A5083147441 @default.
- W2055143012 hasConcept C104293457 @default.
- W2055143012 hasConcept C115961682 @default.
- W2055143012 hasConcept C126838900 @default.
- W2055143012 hasConcept C127313418 @default.
- W2055143012 hasConcept C151730666 @default.
- W2055143012 hasConcept C154945302 @default.
- W2055143012 hasConcept C187954543 @default.
- W2055143012 hasConcept C192562407 @default.
- W2055143012 hasConcept C201645570 @default.
- W2055143012 hasConcept C2779343474 @default.
- W2055143012 hasConcept C2779813781 @default.
- W2055143012 hasConcept C2989005 @default.
- W2055143012 hasConcept C3018399558 @default.
- W2055143012 hasConcept C41008148 @default.
- W2055143012 hasConcept C509974204 @default.
- W2055143012 hasConcept C544519230 @default.
- W2055143012 hasConcept C55020928 @default.
- W2055143012 hasConcept C71924100 @default.
- W2055143012 hasConceptScore W2055143012C104293457 @default.
- W2055143012 hasConceptScore W2055143012C115961682 @default.
- W2055143012 hasConceptScore W2055143012C126838900 @default.
- W2055143012 hasConceptScore W2055143012C127313418 @default.
- W2055143012 hasConceptScore W2055143012C151730666 @default.
- W2055143012 hasConceptScore W2055143012C154945302 @default.
- W2055143012 hasConceptScore W2055143012C187954543 @default.
- W2055143012 hasConceptScore W2055143012C192562407 @default.
- W2055143012 hasConceptScore W2055143012C201645570 @default.
- W2055143012 hasConceptScore W2055143012C2779343474 @default.
- W2055143012 hasConceptScore W2055143012C2779813781 @default.
- W2055143012 hasConceptScore W2055143012C2989005 @default.
- W2055143012 hasConceptScore W2055143012C3018399558 @default.
- W2055143012 hasConceptScore W2055143012C41008148 @default.
- W2055143012 hasConceptScore W2055143012C509974204 @default.
- W2055143012 hasConceptScore W2055143012C544519230 @default.
- W2055143012 hasConceptScore W2055143012C55020928 @default.
- W2055143012 hasConceptScore W2055143012C71924100 @default.
- W2055143012 hasIssue "6Part2" @default.
- W2055143012 hasLocation W20551430121 @default.
- W2055143012 hasOpenAccess W2055143012 @default.
- W2055143012 hasPrimaryLocation W20551430121 @default.
- W2055143012 hasRelatedWork W1642012722 @default.
- W2055143012 hasRelatedWork W1982789351 @default.
- W2055143012 hasRelatedWork W2049394478 @default.
- W2055143012 hasRelatedWork W2059417794 @default.
- W2055143012 hasRelatedWork W2075565253 @default.
- W2055143012 hasRelatedWork W2151127213 @default.
- W2055143012 hasRelatedWork W2152251929 @default.
- W2055143012 hasRelatedWork W2287344295 @default.
- W2055143012 hasRelatedWork W2417594604 @default.
- W2055143012 hasRelatedWork W3028984494 @default.
- W2055143012 hasVolume "34" @default.
- W2055143012 isParatext "false" @default.
- W2055143012 isRetracted "false" @default.
- W2055143012 magId "2055143012" @default.
- W2055143012 workType "article" @default.