FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2912972687> ?p ?o ?g. }

• W2912972687 endingPage "e0207658" @default.
• W2912972687 startingPage "e0207658" @default.
• W2912972687 abstract "The aim of this work was to develop a novel phantom that supports the construction of highly reproducible phantoms with arbitrary activity distributions for PET imaging. It could offer a methodology for answering questions related to texture measurements in PET imaging. The basic idea is to move a point source on a 3-D trajectory in the field of view, while continuously acquiring data. The reconstruction results in a 3-D activity concentration map according to the pathway of the point source. A 22Na calibration point source was attached to a high precision robotic arm system, where the 3-D movement was software controlled. 3-D activity distributions of a homogeneous cube, a sphere, a spherical shell and a heart shape were simulated. These distributions were used to measure uniformity and to characterize reproducibility. Two potential applications using the lesion simulation method are presented: evaluation in changes of textural properties related to the position in the PET field of view; scanner comparison based on visual and quantitative evaluation of texture features. A lesion with volume of 50x50x50 mm3 can be simulated during approximately 1 hour. The reproducibility of the movement was found to be >99%. The coefficients of variation of the voxels within a simulated homogeneous cube was 2.34%. Based on 5 consecutive and independent measurements of a 36 mm diameter hot sphere, the coefficient of variation of the mean activity concentration was 0.68%. We obtained up to 18% differences within the values of investigated textural indexes, when measuring a lesion in different radial positions of the PET field of view. In comparison of two different human PET scanners the percentage differences between heterogeneity parameters were in the range of 5-55%. After harmonizing the voxel sizes this range reduced to 2-16%. The general activity distributions provided by the two different vendor show high similarity visually. For the demonstration of the flexibility of this method, the same pattern was also simulated on a small animal PET scanner giving similar results, both quantitatively and visually. 3-D motion of a point source in the PET field of view is capable to create an irregular shaped activity distribution with high reproducibility." @default.
• W2912972687 created "2019-02-21" @default.
• W2912972687 creator A5009085432 @default.
• W2912972687 creator A5034099141 @default.
• W2912972687 creator A5045087497 @default.
• W2912972687 creator A5048805985 @default.
• W2912972687 creator A5060166979 @default.
• W2912972687 creator A5070508678 @default.
• W2912972687 creator A5071262120 @default.
• W2912972687 creator A5087150416 @default.
• W2912972687 date "2019-01-25" @default.
• W2912972687 modified "2023-10-13" @default.
• W2912972687 title "Activity painting: PET images of freely defined activity distributions applying a novel phantom technique" @default.
• W2912972687 cites W1422856796 @default.
• W2912972687 cites W1912212332 @default.
• W2912972687 cites W1970051208 @default.
• W2912972687 cites W1973809898 @default.
• W2912972687 cites W1989094220 @default.
• W2912972687 cites W2023468690 @default.
• W2912972687 cites W2046032792 @default.
• W2912972687 cites W2046660680 @default.
• W2912972687 cites W2051204974 @default.
• W2912972687 cites W2086667247 @default.
• W2912972687 cites W2099835501 @default.
• W2912972687 cites W2101931447 @default.
• W2912972687 cites W2103004421 @default.
• W2912972687 cites W2106903895 @default.
• W2912972687 cites W2123992327 @default.
• W2912972687 cites W2139707989 @default.
• W2912972687 cites W2151763964 @default.
• W2912972687 cites W2153563443 @default.
• W2912972687 cites W2156216752 @default.
• W2912972687 cites W2168689738 @default.
• W2912972687 cites W2169683146 @default.
• W2912972687 cites W2293285407 @default.
• W2912972687 cites W2409456704 @default.
• W2912972687 cites W2484742387 @default.
• W2912972687 cites W2523846273 @default.
• W2912972687 cites W2529348641 @default.
• W2912972687 cites W2531708687 @default.
• W2912972687 cites W2532715517 @default.
• W2912972687 cites W2546544979 @default.
• W2912972687 cites W2562146120 @default.
• W2912972687 cites W2568214245 @default.
• W2912972687 cites W2609484922 @default.
• W2912972687 cites W2617036670 @default.
• W2912972687 cites W2770236651 @default.
• W2912972687 cites W2781993955 @default.
• W2912972687 cites W2791478600 @default.
• W2912972687 cites W3025627759 @default.
• W2912972687 doi "https://doi.org/10.1371/journal.pone.0207658" @default.
• W2912972687 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6347296" @default.
• W2912972687 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30682024" @default.
• W2912972687 hasPublicationYear "2019" @default.
• W2912972687 type Work @default.
• W2912972687 sameAs 2912972687 @default.
• W2912972687 citedByCount "6" @default.
• W2912972687 countsByYear W29129726872020 @default.
• W2912972687 countsByYear W29129726872021 @default.
• W2912972687 countsByYear W29129726872022 @default.
• W2912972687 countsByYear W29129726872023 @default.
• W2912972687 crossrefType "journal-article" @default.
• W2912972687 hasAuthorship W2912972687A5009085432 @default.
• W2912972687 hasAuthorship W2912972687A5034099141 @default.
• W2912972687 hasAuthorship W2912972687A5045087497 @default.
• W2912972687 hasAuthorship W2912972687A5048805985 @default.
• W2912972687 hasAuthorship W2912972687A5060166979 @default.
• W2912972687 hasAuthorship W2912972687A5070508678 @default.
• W2912972687 hasAuthorship W2912972687A5071262120 @default.
• W2912972687 hasAuthorship W2912972687A5087150416 @default.
• W2912972687 hasBestOaLocation W29129726871 @default.
• W2912972687 hasConcept C104293457 @default.
• W2912972687 hasConcept C105795698 @default.
• W2912972687 hasConcept C115961682 @default.
• W2912972687 hasConcept C120665830 @default.
• W2912972687 hasConcept C121332964 @default.
• W2912972687 hasConcept C1276947 @default.
• W2912972687 hasConcept C136229726 @default.
• W2912972687 hasConcept C13662910 @default.
• W2912972687 hasConcept C154945302 @default.
• W2912972687 hasConcept C165838908 @default.
• W2912972687 hasConcept C2524010 @default.
• W2912972687 hasConcept C2779751349 @default.
• W2912972687 hasConcept C2781195486 @default.
• W2912972687 hasConcept C31972630 @default.
• W2912972687 hasConcept C33923547 @default.
• W2912972687 hasConcept C41008148 @default.
• W2912972687 hasConcept C53051483 @default.
• W2912972687 hasConcept C54170458 @default.
• W2912972687 hasConcept C71924100 @default.
• W2912972687 hasConcept C9893847 @default.
• W2912972687 hasConceptScore W2912972687C104293457 @default.
• W2912972687 hasConceptScore W2912972687C105795698 @default.
• W2912972687 hasConceptScore W2912972687C115961682 @default.
• W2912972687 hasConceptScore W2912972687C120665830 @default.
• W2912972687 hasConceptScore W2912972687C121332964 @default.
• W2912972687 hasConceptScore W2912972687C1276947 @default.
• W2912972687 hasConceptScore W2912972687C136229726 @default.

• next