Matches in SemOpenAlex for { <https://semopenalex.org/work/W2080693908> ?p ?o ?g. }
Showing items 1 to 87 of
87
with 100 items per page.
- W2080693908 abstract "Purpose: To develop a quantitative method to evaluate the cone‐beam CT(CBCT)image center congruence with the linac radiation isocenter. Method and Materials: A ball‐bearing (BB) was placed in the proximity of the isocenter of a Varian Trilogy linac. The center of BB served as a static reference point in the space. The BB was imaged with square megavolt (MV) radiation beams at gantry angles of 0, 90, 180, and 270 degrees. The radiation isocenter was localized relative to the BB center based on the four MV EPIDimages. Then the BB was imaged with the CBCT. The CBCTimage center was localized relative to the BB center. Finally, the 3D displacement between the CBCTimage center and the radiation isocenter was computed. Results: The CBCTimage center was found to have excellent short‐term positional reproducibility, i.e., <0.1 mm wobbling in each of the x(lateral), y(vertical), and z(longitudinal) directions in 10 consecutive acquisitions. Measured in a 7‐month period, the CBCTimage center deviated from the radiation isocenter by 0.40 ± 0.12 mm (x), 0.43 ± 0.04 mm (y), and 0.34 ± 0.14 mm (z). Small yet systematic discrepancies were found between the CBCTimage center, 2D MV or kV portal image center, and the radiation isocenter. For the linac studied, we detected a 0.8 mm discrepancy between the CBCTimage center and the MV EPIDimage center in the anterior‐posterior direction. This discrepancy was demonstrated in a clinical case study where the patient was positioned with 3D CBCTimaging followed by 2D MV portal imaging verification. Conclusion: The CBCTimage center was localized relative to the radiation isocenter using a simple QA procedure. Computerized analysis revealed that the misalignment of CBCTimage center was highly reproducible in short term and long term and could be quantified at sub‐millimeter scale." @default.
- W2080693908 created "2016-06-24" @default.
- W2080693908 creator A5025435918 @default.
- W2080693908 creator A5042097135 @default.
- W2080693908 creator A5059890725 @default.
- W2080693908 creator A5064028169 @default.
- W2080693908 creator A5069170768 @default.
- W2080693908 creator A5073275198 @default.
- W2080693908 creator A5090115592 @default.
- W2080693908 date "2010-06-01" @default.
- W2080693908 modified "2023-09-26" @default.
- W2080693908 title "SU-GG-J-74: Congruence of Cone-Beam CT Image Center with the Radiation Isocenter of a Linear Accelerator" @default.
- W2080693908 doi "https://doi.org/10.1118/1.3468298" @default.
- W2080693908 hasPublicationYear "2010" @default.
- W2080693908 type Work @default.
- W2080693908 sameAs 2080693908 @default.
- W2080693908 citedByCount "1" @default.
- W2080693908 countsByYear W20806939082018 @default.
- W2080693908 crossrefType "journal-article" @default.
- W2080693908 hasAuthorship W2080693908A5025435918 @default.
- W2080693908 hasAuthorship W2080693908A5042097135 @default.
- W2080693908 hasAuthorship W2080693908A5059890725 @default.
- W2080693908 hasAuthorship W2080693908A5064028169 @default.
- W2080693908 hasAuthorship W2080693908A5069170768 @default.
- W2080693908 hasAuthorship W2080693908A5073275198 @default.
- W2080693908 hasAuthorship W2080693908A5090115592 @default.
- W2080693908 hasConcept C104293457 @default.
- W2080693908 hasConcept C120665830 @default.
- W2080693908 hasConcept C121332964 @default.
- W2080693908 hasConcept C126838900 @default.
- W2080693908 hasConcept C168834538 @default.
- W2080693908 hasConcept C180048950 @default.
- W2080693908 hasConcept C181401712 @default.
- W2080693908 hasConcept C185592680 @default.
- W2080693908 hasConcept C2779463800 @default.
- W2080693908 hasConcept C2779813781 @default.
- W2080693908 hasConcept C2989005 @default.
- W2080693908 hasConcept C31601959 @default.
- W2080693908 hasConcept C544519230 @default.
- W2080693908 hasConcept C71924100 @default.
- W2080693908 hasConcept C75088862 @default.
- W2080693908 hasConcept C8010536 @default.
- W2080693908 hasConcept C9267231 @default.
- W2080693908 hasConceptScore W2080693908C104293457 @default.
- W2080693908 hasConceptScore W2080693908C120665830 @default.
- W2080693908 hasConceptScore W2080693908C121332964 @default.
- W2080693908 hasConceptScore W2080693908C126838900 @default.
- W2080693908 hasConceptScore W2080693908C168834538 @default.
- W2080693908 hasConceptScore W2080693908C180048950 @default.
- W2080693908 hasConceptScore W2080693908C181401712 @default.
- W2080693908 hasConceptScore W2080693908C185592680 @default.
- W2080693908 hasConceptScore W2080693908C2779463800 @default.
- W2080693908 hasConceptScore W2080693908C2779813781 @default.
- W2080693908 hasConceptScore W2080693908C2989005 @default.
- W2080693908 hasConceptScore W2080693908C31601959 @default.
- W2080693908 hasConceptScore W2080693908C544519230 @default.
- W2080693908 hasConceptScore W2080693908C71924100 @default.
- W2080693908 hasConceptScore W2080693908C75088862 @default.
- W2080693908 hasConceptScore W2080693908C8010536 @default.
- W2080693908 hasConceptScore W2080693908C9267231 @default.
- W2080693908 hasLocation W20806939081 @default.
- W2080693908 hasOpenAccess W2080693908 @default.
- W2080693908 hasPrimaryLocation W20806939081 @default.
- W2080693908 hasRelatedWork W1968480621 @default.
- W2080693908 hasRelatedWork W1970527080 @default.
- W2080693908 hasRelatedWork W1984952067 @default.
- W2080693908 hasRelatedWork W1993369856 @default.
- W2080693908 hasRelatedWork W1997304607 @default.
- W2080693908 hasRelatedWork W2008858617 @default.
- W2080693908 hasRelatedWork W2044433003 @default.
- W2080693908 hasRelatedWork W2051111147 @default.
- W2080693908 hasRelatedWork W2078173878 @default.
- W2080693908 hasRelatedWork W2079265734 @default.
- W2080693908 hasRelatedWork W2118667858 @default.
- W2080693908 hasRelatedWork W2370920472 @default.
- W2080693908 hasRelatedWork W2501727871 @default.
- W2080693908 hasRelatedWork W2610307304 @default.
- W2080693908 hasRelatedWork W2753027622 @default.
- W2080693908 hasRelatedWork W2972879713 @default.
- W2080693908 hasRelatedWork W2973584015 @default.
- W2080693908 hasRelatedWork W3011053511 @default.
- W2080693908 hasRelatedWork W3165282004 @default.
- W2080693908 hasRelatedWork W3148001564 @default.
- W2080693908 isParatext "false" @default.
- W2080693908 isRetracted "false" @default.
- W2080693908 magId "2080693908" @default.
- W2080693908 workType "article" @default.