Matches in SemOpenAlex for { <https://semopenalex.org/work/W2003032393> ?p ?o ?g. }
Showing items 1 to 86 of
86
with 100 items per page.
- W2003032393 endingPage "498" @default.
- W2003032393 startingPage "498" @default.
- W2003032393 abstract "Purpose: To evaluate three commercial metal artifact reduction methods (MAR) in the context of radiation therapy treatment planning. Methods: Three MAR strategies were evaluated: Philips O-MAR, monochromatic imaging using Gemstone Spectral Imaging (GSI) dual energy CT, and monochromatic imaging with metal artifact reduction software (GSIMARs). The Gammex RMI 467 tissue characterization phantom with several metal rods and two anthropomorphic phantoms (pelvic phantom with hip prosthesis and head phantom with dental fillings), were scanned with and without (baseline) metals. Each MAR method was evaluated based on CT number accuracy, metal size accuracy, and reduction in the severity of streak artifacts. CT number difference maps between the baseline and metal scan images were calculated, and the severity of streak artifacts was quantified using the percentage of pixels with >40 HU error (“bad pixels”). Results: Philips O-MAR generally reduced HU errors in the RMI phantom. However, increased errors and induced artifacts were observed for lung materials. GSI monochromatic 70keV images generally showed similar HU errors as 120kVp imaging, while 140keV images reduced errors. GSI-MARs systematically reduced errors compared to GSI monochromatic imaging. All imaging techniques preserved the diameter of a stainless steel rod to within ±1.6mm (2 pixels). For the hip prosthesis, O-MAR reduced the average % bad pixels from 47% to 32%. For GSI 140keV imaging, the percent of bad pixels was reduced from 37% to 29% compared to 120kVp imaging, while GSI-MARs further reduced it to 12%. For the head phantom, none of the MAR methods were particularly successful. Conclusion: The three MAR methods all improve CT images for treatment planning to some degree, but none of them are globally effective for all conditions. The MAR methods were successful for large metal implants in a homogeneous environment (hip prosthesis) but were not successful for the more complicated case of dental artifacts." @default.
- W2003032393 created "2016-06-24" @default.
- W2003032393 creator A5000411197 @default.
- W2003032393 creator A5001445981 @default.
- W2003032393 creator A5008352184 @default.
- W2003032393 creator A5012430387 @default.
- W2003032393 creator A5013036523 @default.
- W2003032393 creator A5032086942 @default.
- W2003032393 creator A5034304648 @default.
- W2003032393 creator A5038361086 @default.
- W2003032393 creator A5074996913 @default.
- W2003032393 date "2014-05-29" @default.
- W2003032393 modified "2023-09-26" @default.
- W2003032393 title "WE-D-18A-01: Evaluation of Three Commercial Metal Artifact Reduction Methods for CT Simulations in Radiation Therapy Treatment Planning" @default.
- W2003032393 doi "https://doi.org/10.1118/1.4889410" @default.
- W2003032393 hasPublicationYear "2014" @default.
- W2003032393 type Work @default.
- W2003032393 sameAs 2003032393 @default.
- W2003032393 citedByCount "0" @default.
- W2003032393 crossrefType "journal-article" @default.
- W2003032393 hasAuthorship W2003032393A5000411197 @default.
- W2003032393 hasAuthorship W2003032393A5001445981 @default.
- W2003032393 hasAuthorship W2003032393A5008352184 @default.
- W2003032393 hasAuthorship W2003032393A5012430387 @default.
- W2003032393 hasAuthorship W2003032393A5013036523 @default.
- W2003032393 hasAuthorship W2003032393A5032086942 @default.
- W2003032393 hasAuthorship W2003032393A5034304648 @default.
- W2003032393 hasAuthorship W2003032393A5038361086 @default.
- W2003032393 hasAuthorship W2003032393A5074996913 @default.
- W2003032393 hasConcept C104293457 @default.
- W2003032393 hasConcept C120665830 @default.
- W2003032393 hasConcept C121332964 @default.
- W2003032393 hasConcept C126838900 @default.
- W2003032393 hasConcept C136229726 @default.
- W2003032393 hasConcept C151730666 @default.
- W2003032393 hasConcept C154945302 @default.
- W2003032393 hasConcept C160633673 @default.
- W2003032393 hasConcept C192562407 @default.
- W2003032393 hasConcept C2779010991 @default.
- W2003032393 hasConcept C2779343474 @default.
- W2003032393 hasConcept C2989005 @default.
- W2003032393 hasConcept C31601959 @default.
- W2003032393 hasConcept C40833965 @default.
- W2003032393 hasConcept C41008148 @default.
- W2003032393 hasConcept C65185188 @default.
- W2003032393 hasConcept C71924100 @default.
- W2003032393 hasConcept C86803240 @default.
- W2003032393 hasConceptScore W2003032393C104293457 @default.
- W2003032393 hasConceptScore W2003032393C120665830 @default.
- W2003032393 hasConceptScore W2003032393C121332964 @default.
- W2003032393 hasConceptScore W2003032393C126838900 @default.
- W2003032393 hasConceptScore W2003032393C136229726 @default.
- W2003032393 hasConceptScore W2003032393C151730666 @default.
- W2003032393 hasConceptScore W2003032393C154945302 @default.
- W2003032393 hasConceptScore W2003032393C160633673 @default.
- W2003032393 hasConceptScore W2003032393C192562407 @default.
- W2003032393 hasConceptScore W2003032393C2779010991 @default.
- W2003032393 hasConceptScore W2003032393C2779343474 @default.
- W2003032393 hasConceptScore W2003032393C2989005 @default.
- W2003032393 hasConceptScore W2003032393C31601959 @default.
- W2003032393 hasConceptScore W2003032393C40833965 @default.
- W2003032393 hasConceptScore W2003032393C41008148 @default.
- W2003032393 hasConceptScore W2003032393C65185188 @default.
- W2003032393 hasConceptScore W2003032393C71924100 @default.
- W2003032393 hasConceptScore W2003032393C86803240 @default.
- W2003032393 hasIssue "6Part29" @default.
- W2003032393 hasLocation W20030323931 @default.
- W2003032393 hasOpenAccess W2003032393 @default.
- W2003032393 hasPrimaryLocation W20030323931 @default.
- W2003032393 hasRelatedWork W2012175208 @default.
- W2003032393 hasRelatedWork W2032205993 @default.
- W2003032393 hasRelatedWork W2048948347 @default.
- W2003032393 hasRelatedWork W2087838963 @default.
- W2003032393 hasRelatedWork W2091305231 @default.
- W2003032393 hasRelatedWork W2156904925 @default.
- W2003032393 hasRelatedWork W2207083651 @default.
- W2003032393 hasRelatedWork W2471264335 @default.
- W2003032393 hasRelatedWork W2512268347 @default.
- W2003032393 hasRelatedWork W2539398857 @default.
- W2003032393 hasVolume "41" @default.
- W2003032393 isParatext "false" @default.
- W2003032393 isRetracted "false" @default.
- W2003032393 magId "2003032393" @default.
- W2003032393 workType "article" @default.