Matches in SemOpenAlex for { <https://semopenalex.org/work/W2544283301> ?p ?o ?g. }
Showing items 1 to 100 of
100
with 100 items per page.
- W2544283301 abstract "For many clinical applications, it is important to know not only the total activity in an organ of interest, but also the details regarding this activity distribution. In this context, the term “quantitation” would refer to the recovery of not only the total activity but also its voxelized concentration. In this paper, we analyze the quantitative accuracy of activity distributions in 99mTc SPECT/CT images using data from physical phantom experiments. Our acquisitions followed cardiac (99mTc-MIBI) and oncology (99mTc-MDP) clinical acquisition protocols and were aiming at providing the medical community with information about absolute 99mTc activity distribution in the myocardium (for the diagnosis of a balanced triple vessel disease) and in tumors (for evaluation of their aggressiveness). Our algorithm includes the following steps: (i) Reconstruction of initial images with corrections for attenuation, scattering, and resolution loss; (ii) Creation of a template (numeric phantom) covering not only the investigated region of interest (ROI), but also other active areas. allowing us to simultaneously take into account both spill-in and spill-out effects; (iii) Projection and reconstruction of this template (with the same corrections as for the initial images); (iv) Voxel-by-voxel partial volume effect correction (PVC). After applying all the aforementioned corrections, we recovered total activities inside both heart and tumor models with errors less than ∼6% for 33ml containers and ∼9% for 120ml heart insert. PVC substantially improved not only the accuracy of the recovered total activity (up to 40%), but also its distribution inside the ROI. The current version of this PVC technique makes an assumption that the ratios of activity between different compartments are known. Although this assumption may hold in some clinical situations, for example for tumors in areas with low background activity, at the next stage we plan to test the use of the initial image reconstruction for creation of the template." @default.
- W2544283301 created "2016-11-04" @default.
- W2544283301 creator A5033081294 @default.
- W2544283301 creator A5048546438 @default.
- W2544283301 date "2008-10-01" @default.
- W2544283301 modified "2023-09-26" @default.
- W2544283301 title "Quantitative accuracy of SPECT reconstructions with a voxelized CT-based partial volume effect correction" @default.
- W2544283301 cites W1549622374 @default.
- W2544283301 cites W1906922409 @default.
- W2544283301 cites W1967446828 @default.
- W2544283301 cites W1988194805 @default.
- W2544283301 cites W1996677204 @default.
- W2544283301 cites W2037788252 @default.
- W2544283301 cites W2095272243 @default.
- W2544283301 cites W2119897748 @default.
- W2544283301 cites W2127887371 @default.
- W2544283301 cites W2132402064 @default.
- W2544283301 cites W2152799813 @default.
- W2544283301 cites W2540124140 @default.
- W2544283301 doi "https://doi.org/10.1109/nssmic.2008.4774238" @default.
- W2544283301 hasPublicationYear "2008" @default.
- W2544283301 type Work @default.
- W2544283301 sameAs 2544283301 @default.
- W2544283301 citedByCount "3" @default.
- W2544283301 crossrefType "proceedings-article" @default.
- W2544283301 hasAuthorship W2544283301A5033081294 @default.
- W2544283301 hasAuthorship W2544283301A5048546438 @default.
- W2544283301 hasConcept C104293457 @default.
- W2544283301 hasConcept C11413529 @default.
- W2544283301 hasConcept C120665830 @default.
- W2544283301 hasConcept C121332964 @default.
- W2544283301 hasConcept C123688308 @default.
- W2544283301 hasConcept C127313418 @default.
- W2544283301 hasConcept C136229726 @default.
- W2544283301 hasConcept C141379421 @default.
- W2544283301 hasConcept C151730666 @default.
- W2544283301 hasConcept C154945302 @default.
- W2544283301 hasConcept C184652730 @default.
- W2544283301 hasConcept C19609008 @default.
- W2544283301 hasConcept C20556612 @default.
- W2544283301 hasConcept C2775842073 @default.
- W2544283301 hasConcept C2779343474 @default.
- W2544283301 hasConcept C2989005 @default.
- W2544283301 hasConcept C31972630 @default.
- W2544283301 hasConcept C41008148 @default.
- W2544283301 hasConcept C54170458 @default.
- W2544283301 hasConcept C57493831 @default.
- W2544283301 hasConcept C62520636 @default.
- W2544283301 hasConcept C71924100 @default.
- W2544283301 hasConcept C82233179 @default.
- W2544283301 hasConceptScore W2544283301C104293457 @default.
- W2544283301 hasConceptScore W2544283301C11413529 @default.
- W2544283301 hasConceptScore W2544283301C120665830 @default.
- W2544283301 hasConceptScore W2544283301C121332964 @default.
- W2544283301 hasConceptScore W2544283301C123688308 @default.
- W2544283301 hasConceptScore W2544283301C127313418 @default.
- W2544283301 hasConceptScore W2544283301C136229726 @default.
- W2544283301 hasConceptScore W2544283301C141379421 @default.
- W2544283301 hasConceptScore W2544283301C151730666 @default.
- W2544283301 hasConceptScore W2544283301C154945302 @default.
- W2544283301 hasConceptScore W2544283301C184652730 @default.
- W2544283301 hasConceptScore W2544283301C19609008 @default.
- W2544283301 hasConceptScore W2544283301C20556612 @default.
- W2544283301 hasConceptScore W2544283301C2775842073 @default.
- W2544283301 hasConceptScore W2544283301C2779343474 @default.
- W2544283301 hasConceptScore W2544283301C2989005 @default.
- W2544283301 hasConceptScore W2544283301C31972630 @default.
- W2544283301 hasConceptScore W2544283301C41008148 @default.
- W2544283301 hasConceptScore W2544283301C54170458 @default.
- W2544283301 hasConceptScore W2544283301C57493831 @default.
- W2544283301 hasConceptScore W2544283301C62520636 @default.
- W2544283301 hasConceptScore W2544283301C71924100 @default.
- W2544283301 hasConceptScore W2544283301C82233179 @default.
- W2544283301 hasLocation W25442833011 @default.
- W2544283301 hasOpenAccess W2544283301 @default.
- W2544283301 hasPrimaryLocation W25442833011 @default.
- W2544283301 hasRelatedWork W163244040 @default.
- W2544283301 hasRelatedWork W1637336155 @default.
- W2544283301 hasRelatedWork W1963168511 @default.
- W2544283301 hasRelatedWork W1984705540 @default.
- W2544283301 hasRelatedWork W2018125139 @default.
- W2544283301 hasRelatedWork W2033241489 @default.
- W2544283301 hasRelatedWork W2041138563 @default.
- W2544283301 hasRelatedWork W2050199209 @default.
- W2544283301 hasRelatedWork W2056116880 @default.
- W2544283301 hasRelatedWork W2101087519 @default.
- W2544283301 hasRelatedWork W2114115086 @default.
- W2544283301 hasRelatedWork W2135444419 @default.
- W2544283301 hasRelatedWork W2144243501 @default.
- W2544283301 hasRelatedWork W2152799813 @default.
- W2544283301 hasRelatedWork W2414281638 @default.
- W2544283301 hasRelatedWork W2529332223 @default.
- W2544283301 hasRelatedWork W2539570655 @default.
- W2544283301 hasRelatedWork W2888042425 @default.
- W2544283301 hasRelatedWork W2953516056 @default.
- W2544283301 hasRelatedWork W3213089689 @default.
- W2544283301 isParatext "false" @default.
- W2544283301 isRetracted "false" @default.
- W2544283301 magId "2544283301" @default.
- W2544283301 workType "article" @default.