FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2071501053> ?p ?o ?g. }

• W2071501053 endingPage "174" @default.
• W2071501053 startingPage "169" @default.
• W2071501053 abstract "The purpose of this study was to quantify changes in photon beam dosimetry caused by using contrast media during computed tomography (CT) simulation and determine if the resulting changes are clinically significant. The effect of contrast on dosimetry was first examined for a single 6-MV photon beam incident on a plane phantom with a structure of varying electron densities (rho(e)) and thickness. Patient studies were then undertaken in which CT data sets were collected with and without contrast for 6 typical patients. Three patients received IV contrast (Optiray-240) only and 3 received IV plus oral (Gastrograffin) contrast. Each patient was planned using conformal multifield techniques in accordance with the department standards. Two methods were used to compare the effect of contrast on dosimetry for each patient. The phantom analysis showed that the change in dose at the isocenter for a single 10 x 10 cm2 6-MV photon beam traversing 10 cm of a contrast-enhanced structure with rho(e) 1.22 was 7.0% (1.22 was the highest average rho(e) observed in the patient data). As a result of using contrast, increases in rho(e) were observed in structures for the 6 patients studied. Consequently, when using contrast-enhanced CT data for multifield planning, increases in dose at the isocenter and in critical structures were observed up to 2.1% and 2.5%, respectively. Planning on contrast-enhanced CT images may result in an increase in dose of up to 2.1% at the isocenter, which would generally be regarded as clinically insignificant. If, however, a critical organ is in close proximity to the planning target volume (PTV) and is planned to receive its maximum allowable dose, planning on contrast-enhanced CT images may result in that organ receiving dose beyond the recommended tolerance. In these instances, pre-contrast CT data should be used for dosimetry." @default.
• W2071501053 created "2016-06-24" @default.
• W2071501053 creator A5051415108 @default.
• W2071501053 creator A5063758452 @default.
• W2071501053 creator A5070443117 @default.
• W2071501053 date "2008-09-01" @default.
• W2071501053 modified "2023-09-26" @default.
• W2071501053 title "Effect of Contrast Media on Megavoltage Photon Beam Dosimetry" @default.
• W2071501053 cites W2059561923 @default.
• W2071501053 cites W2098061752 @default.
• W2071501053 doi "https://doi.org/10.1016/j.meddos.2007.04.007" @default.
• W2071501053 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/18674680" @default.
• W2071501053 hasPublicationYear "2008" @default.
• W2071501053 type Work @default.
• W2071501053 sameAs 2071501053 @default.
• W2071501053 citedByCount "15" @default.
• W2071501053 countsByYear W20715010532013 @default.
• W2071501053 countsByYear W20715010532015 @default.
• W2071501053 countsByYear W20715010532016 @default.
• W2071501053 countsByYear W20715010532020 @default.
• W2071501053 countsByYear W20715010532021 @default.
• W2071501053 countsByYear W20715010532022 @default.
• W2071501053 crossrefType "journal-article" @default.
• W2071501053 hasAuthorship W2071501053A5051415108 @default.
• W2071501053 hasAuthorship W2071501053A5063758452 @default.
• W2071501053 hasAuthorship W2071501053A5070443117 @default.
• W2071501053 hasConcept C104293457 @default.
• W2071501053 hasConcept C120665830 @default.
• W2071501053 hasConcept C121332964 @default.
• W2071501053 hasConcept C159317903 @default.
• W2071501053 hasConcept C168834538 @default.
• W2071501053 hasConcept C181401712 @default.
• W2071501053 hasConcept C2776502983 @default.
• W2071501053 hasConcept C2989005 @default.
• W2071501053 hasConcept C71924100 @default.
• W2071501053 hasConcept C75088862 @default.
• W2071501053 hasConceptScore W2071501053C104293457 @default.
• W2071501053 hasConceptScore W2071501053C120665830 @default.
• W2071501053 hasConceptScore W2071501053C121332964 @default.
• W2071501053 hasConceptScore W2071501053C159317903 @default.
• W2071501053 hasConceptScore W2071501053C168834538 @default.
• W2071501053 hasConceptScore W2071501053C181401712 @default.
• W2071501053 hasConceptScore W2071501053C2776502983 @default.
• W2071501053 hasConceptScore W2071501053C2989005 @default.
• W2071501053 hasConceptScore W2071501053C71924100 @default.
• W2071501053 hasConceptScore W2071501053C75088862 @default.
• W2071501053 hasIssue "3" @default.
• W2071501053 hasLocation W20715010531 @default.
• W2071501053 hasLocation W20715010532 @default.
• W2071501053 hasOpenAccess W2071501053 @default.
• W2071501053 hasPrimaryLocation W20715010531 @default.
• W2071501053 hasRelatedWork W2015793344 @default.
• W2071501053 hasRelatedWork W2025656351 @default.
• W2071501053 hasRelatedWork W2037731296 @default.
• W2071501053 hasRelatedWork W2054114496 @default.
• W2071501053 hasRelatedWork W2071501053 @default.
• W2071501053 hasRelatedWork W2073577506 @default.
• W2071501053 hasRelatedWork W2076601691 @default.
• W2071501053 hasRelatedWork W2079393167 @default.
• W2071501053 hasRelatedWork W2084589849 @default.
• W2071501053 hasRelatedWork W3031131426 @default.
• W2071501053 hasVolume "33" @default.
• W2071501053 isParatext "false" @default.
• W2071501053 isRetracted "false" @default.
• W2071501053 magId "2071501053" @default.
• W2071501053 workType "article" @default.