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The impact of pediatric-specific dose modulation curves on radiation dose and image quality in head computed tomography

2015Artigo científico Acesso aberto
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dc.contributor.authorSantos, Joana
dc.contributor.authorFoley, Shane
dc.contributor.authorPaulo, Graciano
dc.contributor.authorMcEntee, Mark F.
dc.contributor.authorRainford, Louise
dc.date.accessioned2017-04-13T09:38:10Z
dc.date.available2017-04-13T09:38:10Z
dc.date.issued2015
dc.description.abstractThe volume of CT examinations has increased with resultant increases in collective dose values over the last decade.Objective: To analyze the impact of the tube current and voltage modulation for dose values and image quality of pediatric head CT examinations. Materials and methods: Head CT examinations were performed on anthropomorphic phantoms and four pediatric age categories before and after the introduction of dedicated pediatric curves for tube voltage and current modulation. Local diagnostic reference levels were calculated. Visual grading characteristic image quality evaluation was performed by four pediatric neuroradiologists and image noise comparisons were performed. Results: Pediatric-specific modulation curves demonstrated a 49% decrease in mean radiation dose for phantom examinations. The local diagnostic reference levels (CTDIvol) for clinical examinations decreased by 52%, 41%, 46% and 40% for newborn, 5-, 10- and 15-year-old patients, respectively. Visual grading characteristic image quality was maintained for the majority of age categorizations (area under the curve = 0.5) and image noise measurements did not change (P = 0.693). Conclusion: Pediatric-specific dose modulation curves resulted in an overall mean dose reduction of 45% with no significant differences in subjective or objective image quality findings.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1007/s00247-015-3398-5pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.26/18185
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringer Verlagpt_PT
dc.subjectAdolescentpt_PT
dc.subjectChildpt_PT
dc.subjectPreschool Childpt_PT
dc.subjectHeadpt_PT
dc.subjectHumanspt_PT
dc.subjectInfantpt_PT
dc.subjectNewborn Infantpt_PT
dc.subjectComputer-Assisted Radiographic Image Interpretationpt_PT
dc.subjectX-Ray Computed Tomographypt_PT
dc.subjectPhantoms, Imagingpt_PT
dc.subjectRadiation Dosagept_PT
dc.titleThe impact of pediatric-specific dose modulation curves on radiation dose and image quality in head computed tomographypt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage1822pt_PT
oaire.citation.issue12pt_PT
oaire.citation.startPage1814pt_PT
oaire.citation.titlePediatric Radiologypt_PT
oaire.citation.volume45pt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT

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