Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/11602
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dc.contributor.authorFindikli, I.-
dc.contributor.authorYalcin, A.-
dc.contributor.authorKasapgil, O.-
dc.contributor.authorYildirim, B.-
dc.contributor.authorFitoz, S.-
dc.contributor.authorOnur, M.R.-
dc.contributor.authorSancak, T-
dc.date.accessioned2024-06-19T14:55:33Z-
dc.date.available2024-06-19T14:55:33Z-
dc.date.issued2024-
dc.identifier.issn0969-806X-
dc.identifier.urihttps://doi.org/10.1016/j.radphyschem.2024.111800-
dc.identifier.urihttps://hdl.handle.net/20.500.11851/11602-
dc.description.abstractThe number of the Computed Tomography (CT) examinations has increased greatly over the past decade; This has made CT doses the largest source of the individual effective dose from medical exposures worldwide. Evaluation of image quality in CT is an important issue to ensure diagnostic accuracy, while keeping the radiation dose especially to the pediatric patient as low as reasonably possible. The purpose of this study was to assess the physical and psychophysical image quality in pediatric CT for different iterative reconstruction (IR) algorithms. The image quality was measured on each CT system using pediatric QRM abdomen and thorax phantoms for clinical thorax and abdomen examination scanning parameters and using the Catphan 600 phantom for head examination scanning parameters. The performance of each CT systems was evaluated individually using conventional filtered back-projection (FBP) and IR algorithm employed in that system. Noise, contrast-to-noise ratio (CNR), inverse image quality figure (IQFinv), modulation transfer function (MTF) and noise power spectrum (NPS) were assessed for FBP and wide range of iteration level of different IR algorithms. Figure of Merit (FOM) parameter was calculated to characterize the dose efficiency of each CT system. The CTDIvol values were changed from 20.6 to 45.7, 0.9 to 7.4 and 2.4–9.6 mGy for pediatric head, thorax and abdomen scanning protocols between CT systems, respectively. With increasing iteration level, image noise decreased while CNR and IQFinv increased. NPS peak was decreased with increasing iteration level for both two (2D) and three dimensional (3D) NPS and the ratio of the 3D NPS to 2D NPS varied from 4.5 to 8.3 for pediatric head, from 4.6 to 8.7 for pediatric thorax and from 4.0 to 14.0 for pediatric abdomen scanning protocols. For all IR algorithms employed with CT systems used in this study, the FOM values were increased with increasing iteration level. © 2024 Elsevier Ltden_US
dc.description.sponsorshipTürkiye Bilimsel ve Teknolojik Araştırma Kurumu, TÜBİTAK: 122F015; Türkiye Bilimsel ve Teknolojik Araştırma Kurumu, TÜBİTAKen_US
dc.language.isoenen_US
dc.publisherElsevier Ltden_US
dc.relation.ispartofRadiation Physics and Chemistryen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectFigure of meriten_US
dc.subjectInverse image quality figureen_US
dc.subjectPediatric CTen_US
dc.subjectPhysical image qualityen_US
dc.subjectComputerized tomographyen_US
dc.subjectDiagnosisen_US
dc.subjectImage reconstructionen_US
dc.subjectIterative methodsen_US
dc.subjectPediatricsen_US
dc.subjectPhantomsen_US
dc.subjectQuality controlen_US
dc.subjectContrast-to-noise ratioen_US
dc.subjectFigure of meriten_US
dc.subjectImage quality figuresen_US
dc.subjectInverse image quality figureen_US
dc.subjectIterative reconstruction algorithmsen_US
dc.subjectNoisepower spectrums (NPS)en_US
dc.subjectPediatric computed tomographiesen_US
dc.subjectPhysical image qualityen_US
dc.subjectScanning parametersen_US
dc.subjectTomography systemen_US
dc.subjectImage qualityen_US
dc.subjectabdomenen_US
dc.subjectArticleen_US
dc.subjectchilden_US
dc.subjectclinical assessmenten_US
dc.subjectclinical evaluationen_US
dc.subjectclinical examinationen_US
dc.subjectcomputer assisted tomographyen_US
dc.subjectcontrast to noise ratioen_US
dc.subjectcontrolled studyen_US
dc.subjectfiltered back projectionen_US
dc.subjectheaden_US
dc.subjecthumanen_US
dc.subjectimage qualityen_US
dc.subjectiterative reconstructionen_US
dc.subjectmodulation transfer functionen_US
dc.subjectpediatricsen_US
dc.subjectpreschool childen_US
dc.subjectthoraxen_US
dc.subjectthree-dimensional imagingen_US
dc.titleComputed Tomography System Performance for Different Iterative Reconstruction Algorithmsen_US
dc.typeArticleen_US
dc.departmentTOBB ETÜen_US
dc.identifier.volume222en_US
dc.identifier.wosWOS:001240042100001en_US
dc.identifier.scopus2-s2.0-85192678432en_US
dc.institutionauthorSancak, T-
dc.identifier.doi10.1016/j.radphyschem.2024.111800-
dc.authorscopusid59115841800-
dc.authorscopusid57201885801-
dc.authorscopusid59115842800-
dc.authorscopusid59114427200-
dc.authorscopusid7004546221-
dc.authorscopusid21739759000-
dc.authorscopusid9842701900-
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
item.cerifentitytypePublications-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextNo Fulltext-
item.openairetypeArticle-
item.grantfulltextnone-
item.languageiso639-1en-
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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