FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2287588452> ?p ?o ?g. }

• W2287588452 abstract "Purpose: Composition of the coronary artery plaque is known to have critical role in heart attack. While calcified plaque can easily be diagnosed by conventional CT, it fails to distinguish between fibrous and lipid rich plaques. In the present paper, the authors discuss the experimental techniques and obtain a numerical algorithm by which the electron density (rho(e)) and the effective atomic number (Z(eff)) can be obtained from the dual energy computed tomography (DECT) data. The idea is to use this inversion method to characterize and distinguish between the lipid and fibrous coronary artery plaques. Methods: For the purpose of calibration of the CT machine, the authors prepare aqueous samples whose calculated values of (rho(e), Z(eff)) lie in the range of (2.65 x 10(23) <= rho(e) <= 3.64 x 10(23)/cm(3)) and (6.80 <= Z(eff) <= 8.90). The authors fill the phantom with these known samples and experimentally determine HU(V-1) and HU(V-2), with V-1,V-2 = 100 and 140 kVp, for the same pixels and thus determine the coefficients of inversion that allow us to determine (rho(e), Z(eff)) from the DECT data. The HU(100) and HU(140) for the coronary artery plaque are obtained by filling the channel of the coronary artery with a viscous solution of methyl cellulose in water, containing 2% contrast. These (rho(e), Z(eff)) values of the coronary artery plaque are used for their characterization on the basis of theoretical models of atomic compositions of the plaque materials. These results are compared with histopathological report. Results: The authors find that the calibration gives Pc with an accuracy of 3.5% while Z(eff) is found within 1% of the actual value, the confidence being 95%. The HU(100) and HU(140) are found to be considerably different for the same plaque at the same position and there is a linear trend between these two HU values. It is noted that pure lipid type plaques are practically nonexistent, and microcalcification, as observed in histopathology, has to be taken into account to explain the nature of the observed (rho(e), Z(eff)) data. This also enables us to judge the composition of the plaque in terms of basic model which considers the plaque to be composed of fibres, lipids, and microcalcification. Conclusions: This simple and reliable method has the potential as an effective modality to investigate the composition of noncalcified coronary artery plaques and thus help in their characterization. In this inversion method, (rho(e), Z(eff)) of the scanned sample can be found by eliminating the effects of the CT machine and also by ensuring that the determination of the two unknowns (rho(e), Z(eff)) does not interfere with each other and the nature of the plaque can be identified in terms of a three component model. (C) 2015 American Association of Physicists in Medicine." @default.
• W2287588452 created "2016-06-24" @default.
• W2287588452 creator A5011538497 @default.
• W2287588452 creator A5024995215 @default.
• W2287588452 creator A5030460585 @default.
• W2287588452 creator A5033141629 @default.
• W2287588452 creator A5042892388 @default.
• W2287588452 creator A5045662694 @default.
• W2287588452 creator A5046462366 @default.
• W2287588452 creator A5049712692 @default.
• W2287588452 creator A5053864112 @default.
• W2287588452 creator A5058361603 @default.
• W2287588452 creator A5064835920 @default.
• W2287588452 creator A5071814695 @default.
• W2287588452 creator A5085213833 @default.
• W2287588452 creator A5090019441 @default.
• W2287588452 creator A5056019745 @default.
• W2287588452 date "2015-01-01" @default.
• W2287588452 modified "2023-09-26" @default.
• W2287588452 title "DECT evaluation of noncalc fied coronary artery plaque" @default.
• W2287588452 hasPublicationYear "2015" @default.
• W2287588452 type Work @default.
• W2287588452 sameAs 2287588452 @default.
• W2287588452 citedByCount "0" @default.
• W2287588452 crossrefType "journal-article" @default.
• W2287588452 hasAuthorship W2287588452A5011538497 @default.
• W2287588452 hasAuthorship W2287588452A5024995215 @default.
• W2287588452 hasAuthorship W2287588452A5030460585 @default.
• W2287588452 hasAuthorship W2287588452A5033141629 @default.
• W2287588452 hasAuthorship W2287588452A5042892388 @default.
• W2287588452 hasAuthorship W2287588452A5045662694 @default.
• W2287588452 hasAuthorship W2287588452A5046462366 @default.
• W2287588452 hasAuthorship W2287588452A5049712692 @default.
• W2287588452 hasAuthorship W2287588452A5053864112 @default.
• W2287588452 hasAuthorship W2287588452A5056019745 @default.
• W2287588452 hasAuthorship W2287588452A5058361603 @default.
• W2287588452 hasAuthorship W2287588452A5064835920 @default.
• W2287588452 hasAuthorship W2287588452A5071814695 @default.
• W2287588452 hasAuthorship W2287588452A5085213833 @default.
• W2287588452 hasAuthorship W2287588452A5090019441 @default.
• W2287588452 hasConcept C104293457 @default.
• W2287588452 hasConcept C164705383 @default.
• W2287588452 hasConcept C2776820930 @default.
• W2287588452 hasConcept C2989005 @default.
• W2287588452 hasConcept C71924100 @default.
• W2287588452 hasConceptScore W2287588452C104293457 @default.
• W2287588452 hasConceptScore W2287588452C164705383 @default.
• W2287588452 hasConceptScore W2287588452C2776820930 @default.
• W2287588452 hasConceptScore W2287588452C2989005 @default.
• W2287588452 hasConceptScore W2287588452C71924100 @default.
• W2287588452 hasLocation W22875884521 @default.
• W2287588452 hasOpenAccess W2287588452 @default.
• W2287588452 hasPrimaryLocation W22875884521 @default.
• W2287588452 hasRelatedWork W1968450031 @default.
• W2287588452 hasRelatedWork W2017910067 @default.
• W2287588452 hasRelatedWork W2067892013 @default.
• W2287588452 hasRelatedWork W2126240487 @default.
• W2287588452 hasRelatedWork W2139974791 @default.
• W2287588452 hasRelatedWork W2896634706 @default.
• W2287588452 isParatext "false" @default.
• W2287588452 isRetracted "false" @default.
• W2287588452 magId "2287588452" @default.
• W2287588452 workType "article" @default.