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Paediatric CT optimisation utilising Catphanw 600 and age-specific anthropomorphic phantoms

2014Journal article Open access
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dc.contributor.authorSantos, Joana
dc.contributor.authorBatista, Maria
dc.contributor.authorFoley, Shane
dc.contributor.authorPaulo, Graciano
dc.contributor.authorMcEntee, Mark
dc.contributor.authorRainford, Loiuse
dc.date.accessioned2017-04-19T13:41:21Z
dc.date.available2017-04-19T13:41:21Z
dc.date.issued2014
dc.description.abstractThe purpose of the study is to perform phantom-based optimisation of paediatric computed tomography (CT) protocols and quantify the impact upon radiation dose and image noise levels. The study involved three Portuguese paediatric centres. Currently employed scanning protocols for head and chest examinations and combinations of exposure parameters were applied to a Catphan(®)600 phantom to review the CT dose impact. Contrast-noise ratio (CNR) was quantified using Radia Diagnostic(®) tool. Imaging parameters, returning similar CNRs (<1) and dose savings were applied to three paediatric anthropomorphic phantoms. OsiriX software based on standard deviation pixel values facilitated image noise analysis. Currently employed protocols and age categorisation varied between centres. Manipulation of exposure parameters facilitated mean dose reductions of 33 and 28 % for paediatric head and chest CT examinations, respectively. The majority of the optimised CT examinations resulted in image noise similar to currently employed protocols. Dose reductions of up to 33 % were achieved with image quality maintained.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1093/rpd/ncu018pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.26/18200
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherOxford University Presspt_PT
dc.subjectAge Factorspt_PT
dc.subjectAnthropometrypt_PT
dc.subjectChildpt_PT
dc.subjectPreschool Childpt_PT
dc.subjectHeadpt_PT
dc.subjectHumanspt_PT
dc.subjectNewborn Infantpt_PT
dc.subjectMultidetector Computed Tomographypt_PT
dc.subjectRadiation Dosagept_PT
dc.subjectRadiation Monitoringpt_PT
dc.subjectRadiation Protectionpt_PT
dc.subjectComputer-Assisted Radiographic Image Interpretationpt_PT
dc.subjectThoracic Radiographypt_PT
dc.subjectSoftwarept_PT
dc.subjectThoraxpt_PT
dc.subjectX-Ray Computed Tomographypt_PT
dc.subjectImaging Phantomspt_PT
dc.titlePaediatric CT optimisation utilising Catphanw 600 and age-specific anthropomorphic phantomspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage596pt_PT
oaire.citation.issue4pt_PT
oaire.citation.startPage586pt_PT
oaire.citation.titleRadiation Protection Dosimetrypt_PT
oaire.citation.volume162pt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT

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