Matches in SemOpenAlex for { <https://semopenalex.org/work/W2000985421> ?p ?o ?g. }
Showing items 1 to 81 of
81
with 100 items per page.
- W2000985421 endingPage "3683" @default.
- W2000985421 startingPage "3667" @default.
- W2000985421 abstract "The beam characteristics of a dual physical wedge system, upper and lower, for Varian accelerators are studied over the energy range 6-18 MV. Wedge factors for both systems are measured in a water phantom as a function of field size, depth and source-to-wedge (SWD) distance. Our results indicate that apart from their physical differences, dosimetrically, the two wedge systems have <2% difference in central axis percentage depth dose beyond the build-up region. The lower wedge central axis percentage depth dose is consistently lower than that of the corresponding upper wedge, with the effect more pronounced for large field sizes. The wedge profiles are identical within 2% for all field sizes, depths and energies. The wedge factors for both wedge systems are also within 2% for all field sizes and depths for both 6 and 15 MV photons and slightly higher for the 18 MV beam and 45 degrees-60 degrees wedge angle. The wedge factor variation with SWD reveals an interesting fact that thinner wedges (15 degrees and 30 degrees) result in a higher surface dose in the central axis region than thicker wedges. As the SWD increases beyond 80 cm, the reverse is true, i.e. thicker wedges produce higher surface dose than thinner wedges. It is also verified that the wedge factor at any depth and for any field size can be calculated from the wedged and open field central axis percentage depth dose, and the wedge factor at dmax, resulting in nearly 44% reduction in water phantom scanning and 80% reduction in point measurements during commissioning." @default.
- W2000985421 created "2016-06-24" @default.
- W2000985421 creator A5002918294 @default.
- W2000985421 creator A5054385122 @default.
- W2000985421 creator A5070721855 @default.
- W2000985421 date "2003-10-24" @default.
- W2000985421 modified "2023-09-28" @default.
- W2000985421 title "Beam characteristics of upper and lower physical wedge systems of Varian accelerators" @default.
- W2000985421 cites W1980231992 @default.
- W2000985421 cites W1993376637 @default.
- W2000985421 cites W1997729170 @default.
- W2000985421 cites W1999837589 @default.
- W2000985421 cites W2004012116 @default.
- W2000985421 cites W2016021209 @default.
- W2000985421 cites W2042803731 @default.
- W2000985421 cites W2042861259 @default.
- W2000985421 cites W2044520417 @default.
- W2000985421 cites W2045936418 @default.
- W2000985421 cites W2048910873 @default.
- W2000985421 cites W2059135265 @default.
- W2000985421 cites W2063590454 @default.
- W2000985421 cites W2066574291 @default.
- W2000985421 cites W2073161118 @default.
- W2000985421 cites W2078218811 @default.
- W2000985421 cites W2090153462 @default.
- W2000985421 cites W2091435830 @default.
- W2000985421 cites W2107060619 @default.
- W2000985421 cites W2109056549 @default.
- W2000985421 cites W2120605947 @default.
- W2000985421 cites W2132856905 @default.
- W2000985421 cites W2137646383 @default.
- W2000985421 cites W2149477486 @default.
- W2000985421 doi "https://doi.org/10.1088/0031-9155/48/22/004" @default.
- W2000985421 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/14680266" @default.
- W2000985421 hasPublicationYear "2003" @default.
- W2000985421 type Work @default.
- W2000985421 sameAs 2000985421 @default.
- W2000985421 citedByCount "4" @default.
- W2000985421 countsByYear W20009854212013 @default.
- W2000985421 crossrefType "journal-article" @default.
- W2000985421 hasAuthorship W2000985421A5002918294 @default.
- W2000985421 hasAuthorship W2000985421A5054385122 @default.
- W2000985421 hasAuthorship W2000985421A5070721855 @default.
- W2000985421 hasConcept C104293457 @default.
- W2000985421 hasConcept C120665830 @default.
- W2000985421 hasConcept C121332964 @default.
- W2000985421 hasConcept C168834538 @default.
- W2000985421 hasConcept C180048950 @default.
- W2000985421 hasConcept C192562407 @default.
- W2000985421 hasConcept C3019527723 @default.
- W2000985421 hasConcept C47422493 @default.
- W2000985421 hasConceptScore W2000985421C104293457 @default.
- W2000985421 hasConceptScore W2000985421C120665830 @default.
- W2000985421 hasConceptScore W2000985421C121332964 @default.
- W2000985421 hasConceptScore W2000985421C168834538 @default.
- W2000985421 hasConceptScore W2000985421C180048950 @default.
- W2000985421 hasConceptScore W2000985421C192562407 @default.
- W2000985421 hasConceptScore W2000985421C3019527723 @default.
- W2000985421 hasConceptScore W2000985421C47422493 @default.
- W2000985421 hasIssue "22" @default.
- W2000985421 hasLocation W20009854211 @default.
- W2000985421 hasLocation W20009854212 @default.
- W2000985421 hasOpenAccess W2000985421 @default.
- W2000985421 hasPrimaryLocation W20009854211 @default.
- W2000985421 hasRelatedWork W1974147508 @default.
- W2000985421 hasRelatedWork W1993254157 @default.
- W2000985421 hasRelatedWork W2014552055 @default.
- W2000985421 hasRelatedWork W2057866741 @default.
- W2000985421 hasRelatedWork W2109056549 @default.
- W2000985421 hasRelatedWork W2133302292 @default.
- W2000985421 hasRelatedWork W2192310589 @default.
- W2000985421 hasRelatedWork W2404618845 @default.
- W2000985421 hasRelatedWork W2980614914 @default.
- W2000985421 hasRelatedWork W4206570059 @default.
- W2000985421 hasVolume "48" @default.
- W2000985421 isParatext "false" @default.
- W2000985421 isRetracted "false" @default.
- W2000985421 magId "2000985421" @default.
- W2000985421 workType "article" @default.