Matches in SemOpenAlex for { <https://semopenalex.org/work/W1992665249> ?p ?o ?g. }
Showing items 1 to 86 of
86
with 100 items per page.
- W1992665249 endingPage "513" @default.
- W1992665249 startingPage "513" @default.
- W1992665249 abstract "Purpose: Respiratory signal source, binning method, and reconstruction algorithm are three major factors affecting thoracic 4D cone-beam CT (4D-CBCT) image quality. Various studies have investigated each of them individually, but no sensitivity analysis to these factors has been performed. This study quantitatively compares the impacts of the three factors on thoracic 4D-CBCT image quality. Methods: A 4D-CBCT patient projection dataset acquired using audio-visual biofeedback with known degree of baseline shift in respiratory motion was reconstructed with the following factors: (i) respiratory signal source (via real-time position management or projection image based method), (ii) binning method (phase, displacement, or equal-projection-density (EPD) displacement binning), and (iii) reconstruction algorithm (Feldkamp-Davis-Kress (FDK), McKinnon-Bates (MKB), or adaptive-steepest-descent projection-onto-convex-sets (ASD-POCS)). The image quality was quantified using signal-to-noise ratio (SNR), contrast ratio (CR), and edge-response width (ERW) to assess noise, contrast, and sharpness, respectively. Results: Respiratory signal sources had no significant effect on any of the three metrics. Displacement binning was found to produce slightly more inconsistent SNR values owing to unevenly distributed angular views. The binning method otherwise had minimal effects on image quality. For the reconstruction algorithms, MKB resulted in a slightly higher SNR than FDK, while ASD-POCS improved SNR by a factor of three. Conversely, degradation in CR was observed with MKB and ASD-POCS. FDK and MKB produced very similar ERW, while slightly higher values were observed with ASD-POCS, indicating a small degree of blurriness. Conclusion: Respiratory signal sources and binning methods had a negligible impact on image quality, and did not introduce apparent motion artifacts. The MKB and ASD-POCS reconstruction algorithms reduced the noise and streaking but produced poorer image contrast. Of the reconstruction factors tested, reconstruction algorithms play the most important role in improving 4D-CBCT image quality and therefore represent the highest priority for further development. This project is supported by an NHMRC Australia Fellowship, NHMRC project grant 1034060, US NCI P01CA116602, an International Postgraduate Research Scholarships, and an Australian Postgraduate Award." @default.
- W1992665249 created "2016-06-24" @default.
- W1992665249 creator A5001939038 @default.
- W1992665249 creator A5009895479 @default.
- W1992665249 creator A5078897033 @default.
- W1992665249 creator A5080313972 @default.
- W1992665249 creator A5083540416 @default.
- W1992665249 date "2013-06-01" @default.
- W1992665249 modified "2023-09-26" @default.
- W1992665249 title "WE-G-134-06: Image Quality in Thoracic 4D Cone-Beam CT: A Sensitivity Analysis of Respiratory Signal Source, Binning Method, and Reconstruction Algorithm" @default.
- W1992665249 doi "https://doi.org/10.1118/1.4815675" @default.
- W1992665249 hasPublicationYear "2013" @default.
- W1992665249 type Work @default.
- W1992665249 sameAs 1992665249 @default.
- W1992665249 citedByCount "0" @default.
- W1992665249 crossrefType "journal-article" @default.
- W1992665249 hasAuthorship W1992665249A5001939038 @default.
- W1992665249 hasAuthorship W1992665249A5009895479 @default.
- W1992665249 hasAuthorship W1992665249A5078897033 @default.
- W1992665249 hasAuthorship W1992665249A5080313972 @default.
- W1992665249 hasAuthorship W1992665249A5083540416 @default.
- W1992665249 hasConcept C105795698 @default.
- W1992665249 hasConcept C11413529 @default.
- W1992665249 hasConcept C115961682 @default.
- W1992665249 hasConcept C126838900 @default.
- W1992665249 hasConcept C127413603 @default.
- W1992665249 hasConcept C13944312 @default.
- W1992665249 hasConcept C141379421 @default.
- W1992665249 hasConcept C154945302 @default.
- W1992665249 hasConcept C199360897 @default.
- W1992665249 hasConcept C21200559 @default.
- W1992665249 hasConcept C24326235 @default.
- W1992665249 hasConcept C2779813781 @default.
- W1992665249 hasConcept C2779843651 @default.
- W1992665249 hasConcept C2989005 @default.
- W1992665249 hasConcept C31972630 @default.
- W1992665249 hasConcept C33923547 @default.
- W1992665249 hasConcept C41008148 @default.
- W1992665249 hasConcept C544519230 @default.
- W1992665249 hasConcept C55020928 @default.
- W1992665249 hasConcept C57493831 @default.
- W1992665249 hasConcept C71924100 @default.
- W1992665249 hasConcept C99498987 @default.
- W1992665249 hasConceptScore W1992665249C105795698 @default.
- W1992665249 hasConceptScore W1992665249C11413529 @default.
- W1992665249 hasConceptScore W1992665249C115961682 @default.
- W1992665249 hasConceptScore W1992665249C126838900 @default.
- W1992665249 hasConceptScore W1992665249C127413603 @default.
- W1992665249 hasConceptScore W1992665249C13944312 @default.
- W1992665249 hasConceptScore W1992665249C141379421 @default.
- W1992665249 hasConceptScore W1992665249C154945302 @default.
- W1992665249 hasConceptScore W1992665249C199360897 @default.
- W1992665249 hasConceptScore W1992665249C21200559 @default.
- W1992665249 hasConceptScore W1992665249C24326235 @default.
- W1992665249 hasConceptScore W1992665249C2779813781 @default.
- W1992665249 hasConceptScore W1992665249C2779843651 @default.
- W1992665249 hasConceptScore W1992665249C2989005 @default.
- W1992665249 hasConceptScore W1992665249C31972630 @default.
- W1992665249 hasConceptScore W1992665249C33923547 @default.
- W1992665249 hasConceptScore W1992665249C41008148 @default.
- W1992665249 hasConceptScore W1992665249C544519230 @default.
- W1992665249 hasConceptScore W1992665249C55020928 @default.
- W1992665249 hasConceptScore W1992665249C57493831 @default.
- W1992665249 hasConceptScore W1992665249C71924100 @default.
- W1992665249 hasConceptScore W1992665249C99498987 @default.
- W1992665249 hasIssue "6Part31" @default.
- W1992665249 hasLocation W19926652491 @default.
- W1992665249 hasOpenAccess W1992665249 @default.
- W1992665249 hasPrimaryLocation W19926652491 @default.
- W1992665249 hasRelatedWork W1037561291 @default.
- W1992665249 hasRelatedWork W1992665249 @default.
- W1992665249 hasRelatedWork W2011797925 @default.
- W1992665249 hasRelatedWork W2031845464 @default.
- W1992665249 hasRelatedWork W2034905155 @default.
- W1992665249 hasRelatedWork W2035203020 @default.
- W1992665249 hasRelatedWork W2085535279 @default.
- W1992665249 hasRelatedWork W2103695441 @default.
- W1992665249 hasRelatedWork W2160292663 @default.
- W1992665249 hasRelatedWork W2889844088 @default.
- W1992665249 hasVolume "40" @default.
- W1992665249 isParatext "false" @default.
- W1992665249 isRetracted "false" @default.
- W1992665249 magId "1992665249" @default.
- W1992665249 workType "article" @default.