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dc.contributor.author조현혜-
dc.date.accessioned2020-02-07T16:30:13Z-
dc.date.available2020-02-07T16:30:13Z-
dc.date.issued2020-
dc.identifier.issn0301-0449-
dc.identifier.otherOAK-26402-
dc.identifier.urihttp://dspace.ewha.ac.kr/handle/2015.oak/253341-
dc.description.abstractBackground: Iterative reconstruction has become the standard method for reconstructing computed tomography (CT) scans and needs to be verified for adaptation. Objective: To assess the image quality after adapting advanced modeled iterative reconstruction (ADMIRE) for pediatric head CT. Materials and methods: We included image sets with filtered back projection reconstruction (the cFBP group, n=105) and both filtered back projection and ADMIRE reconstruction (the lower-dose group, n=109) after dose reduction. All five strength levels of ADMIRE and filtered back projection were adapted for the lower-dose group and compared with the cFBP group. Quantitative parameters including noise, signal-to-noise ratio and contrast-to-noise ratio and qualitative parameters including noise, white matter and gray matter differentiation of the supra- and infratentorial levels, sharpness, artifact, and diagnostic accuracy were also evaluated and compared with interobserver agreement. Results: There was a mean dose reduction of 30.6% in CT dose index volume, 32.1% in dose length product, and 32.1% in effective dose after tube current reduction. There was gradual reduction of noise in air, cerebrospinal fluid and white matter with strength levels of ADMIRE from 1 to 5 (P<0.001). Signal-to-noise ratio and contrast-to-noise ratio in all age groups increased among strength levels of ADMIRE, in sequence from 1 to 5, with statistical significance (P<0.001). Gradual reduction of qualitative parameters was noted among strength levels of ADMIRE in sequence from 1 to 5 (P<0.001). Conclusion: Use of ADMIRE for pediatric head CT can reduce radiation dose without degrading image quality. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.-
dc.languageEnglish-
dc.publisherSpringer-
dc.subjectBrain-
dc.subjectChildren-
dc.subjectComputed tomography-
dc.subjectImage quality-
dc.subjectIterative reconstruction-
dc.subjectRadiation dose-
dc.titlePediatric head computed tomography with advanced modeled iterative reconstruction: focus on image quality and reduction of radiation dose-
dc.typeArticle-
dc.relation.issue2-
dc.relation.volume50-
dc.relation.indexSCI-
dc.relation.indexSCIE-
dc.relation.indexSCOPUS-
dc.relation.startpage242-
dc.relation.lastpage251-
dc.relation.journaltitlePediatric Radiology-
dc.identifier.doi10.1007/s00247-019-04532-z-
dc.identifier.scopusid2-s2.0-85074843620-
dc.author.googleCho H.-H.-
dc.author.googleLee S.M.-
dc.author.googleYou S.K.-
dc.date.modifydate20200330144434-
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의과대학 > 의학과 > Journal papers
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