Matches in SemOpenAlex for { <https://semopenalex.org/work/W2593485386> ?p ?o ?g. }
Showing items 1 to 90 of
90
with 100 items per page.
- W2593485386 abstract "Previous work has demonstrated that structural models of surgical tools and implants can be integrated into model-based CT reconstruction to greatly reduce metal artifacts and improve image quality. This work extends a polyenergetic formulation of known-component reconstruction (Poly-KCR) by removing the requirement that a physical model (e.g. CAD drawing) be known a priori, permitting much more widespread application.We adopt a single-threshold segmentation technique with the help of morphological structuring elements to build a shape model of metal components in a patient scan based on initial filtered-backprojection (FBP) reconstruction. This shape model is used as an input to Poly-KCR, a formulation of known-component reconstruction that does not require a prior knowledge of beam quality or component material composition. An investigation of performance as a function of segmentation thresholds is performed in simulation studies, and qualitative comparisons to Poly-KCR with an a priori shape model are made using physical CBCT data of an implanted cadaver and in patient data from a prototype extremities scanner.We find that model-free Poly-KCR (MF-Poly-KCR) provides much better image quality compared to conventional reconstruction techniques (e.g. FBP). Moreover, the performance closely approximates that of Poly- KCR with an a prior shape model. In simulation studies, we find that imaging performance generally follows segmentation accuracy with slight under- or over-estimation based on the shape of the implant. In both simulation and physical data studies we find that the proposed approach can remove most of the blooming and streak artifacts around the component permitting visualization of the surrounding soft-tissues.This work shows that it is possible to perform known-component reconstruction without prior knowledge of the known component. In conjunction with the Poly-KCR technique that does not require knowledge of beam quality or material composition, very little needs to be known about the metal implant and system beforehand. These generalizations will allow more widespread application of KCR techniques in real patient studies where the information of surgical tools and implants is limited or not available." @default.
- W2593485386 created "2017-03-16" @default.
- W2593485386 creator A5041778871 @default.
- W2593485386 creator A5066969185 @default.
- W2593485386 creator A5079368329 @default.
- W2593485386 creator A5086619993 @default.
- W2593485386 creator A5088375164 @default.
- W2593485386 date "2017-03-09" @default.
- W2593485386 modified "2023-09-26" @default.
- W2593485386 title "Polyenergetic known-component reconstruction without prior shape models" @default.
- W2593485386 cites W1971993896 @default.
- W2593485386 cites W1993426255 @default.
- W2593485386 cites W2032237670 @default.
- W2593485386 cites W2106542522 @default.
- W2593485386 cites W2154129661 @default.
- W2593485386 cites W2590973993 @default.
- W2593485386 doi "https://doi.org/10.1117/12.2255542" @default.
- W2593485386 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8238470" @default.
- W2593485386 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34188347" @default.
- W2593485386 hasPublicationYear "2017" @default.
- W2593485386 type Work @default.
- W2593485386 sameAs 2593485386 @default.
- W2593485386 citedByCount "1" @default.
- W2593485386 countsByYear W25934853862019 @default.
- W2593485386 crossrefType "proceedings-article" @default.
- W2593485386 hasAuthorship W2593485386A5041778871 @default.
- W2593485386 hasAuthorship W2593485386A5066969185 @default.
- W2593485386 hasAuthorship W2593485386A5079368329 @default.
- W2593485386 hasAuthorship W2593485386A5086619993 @default.
- W2593485386 hasAuthorship W2593485386A5088375164 @default.
- W2593485386 hasBestOaLocation W25934853862 @default.
- W2593485386 hasConcept C111472728 @default.
- W2593485386 hasConcept C11413529 @default.
- W2593485386 hasConcept C115961682 @default.
- W2593485386 hasConcept C121332964 @default.
- W2593485386 hasConcept C138885662 @default.
- W2593485386 hasConcept C141379421 @default.
- W2593485386 hasConcept C154945302 @default.
- W2593485386 hasConcept C168167062 @default.
- W2593485386 hasConcept C2779751349 @default.
- W2593485386 hasConcept C31972630 @default.
- W2593485386 hasConcept C41008148 @default.
- W2593485386 hasConcept C55020928 @default.
- W2593485386 hasConcept C75553542 @default.
- W2593485386 hasConcept C89600930 @default.
- W2593485386 hasConcept C97355855 @default.
- W2593485386 hasConceptScore W2593485386C111472728 @default.
- W2593485386 hasConceptScore W2593485386C11413529 @default.
- W2593485386 hasConceptScore W2593485386C115961682 @default.
- W2593485386 hasConceptScore W2593485386C121332964 @default.
- W2593485386 hasConceptScore W2593485386C138885662 @default.
- W2593485386 hasConceptScore W2593485386C141379421 @default.
- W2593485386 hasConceptScore W2593485386C154945302 @default.
- W2593485386 hasConceptScore W2593485386C168167062 @default.
- W2593485386 hasConceptScore W2593485386C2779751349 @default.
- W2593485386 hasConceptScore W2593485386C31972630 @default.
- W2593485386 hasConceptScore W2593485386C41008148 @default.
- W2593485386 hasConceptScore W2593485386C55020928 @default.
- W2593485386 hasConceptScore W2593485386C75553542 @default.
- W2593485386 hasConceptScore W2593485386C89600930 @default.
- W2593485386 hasConceptScore W2593485386C97355855 @default.
- W2593485386 hasLocation W25934853861 @default.
- W2593485386 hasLocation W25934853862 @default.
- W2593485386 hasLocation W25934853863 @default.
- W2593485386 hasOpenAccess W2593485386 @default.
- W2593485386 hasPrimaryLocation W25934853861 @default.
- W2593485386 hasRelatedWork W1594154017 @default.
- W2593485386 hasRelatedWork W1681525089 @default.
- W2593485386 hasRelatedWork W1831160535 @default.
- W2593485386 hasRelatedWork W1966626029 @default.
- W2593485386 hasRelatedWork W1970406567 @default.
- W2593485386 hasRelatedWork W1973402277 @default.
- W2593485386 hasRelatedWork W1975589063 @default.
- W2593485386 hasRelatedWork W2023160828 @default.
- W2593485386 hasRelatedWork W2059777096 @default.
- W2593485386 hasRelatedWork W2062708000 @default.
- W2593485386 hasRelatedWork W2067996428 @default.
- W2593485386 hasRelatedWork W2091714435 @default.
- W2593485386 hasRelatedWork W2111850706 @default.
- W2593485386 hasRelatedWork W2113971223 @default.
- W2593485386 hasRelatedWork W2128773175 @default.
- W2593485386 hasRelatedWork W2498950970 @default.
- W2593485386 hasRelatedWork W2541909168 @default.
- W2593485386 hasRelatedWork W2587337644 @default.
- W2593485386 hasRelatedWork W2594396454 @default.
- W2593485386 hasRelatedWork W29397008 @default.
- W2593485386 isParatext "false" @default.
- W2593485386 isRetracted "false" @default.
- W2593485386 magId "2593485386" @default.
- W2593485386 workType "article" @default.