Cited 0 times in Scipus Cited Count

Head CT: Image quality improvement with ASIR-V using a reduced radiation dose protocol for children

DC Field Value Language
dc.contributor.authorKim, HG-
dc.contributor.authorLee, HJ-
dc.contributor.authorLee, SK-
dc.contributor.authorKim, HJ-
dc.contributor.authorKim, MJ-
dc.date.accessioned2018-07-27T00:51:42Z-
dc.date.available2018-07-27T00:51:42Z-
dc.date.issued2017-
dc.identifier.issn0938-7994-
dc.identifier.urihttp://repository.ajou.ac.kr/handle/201003/15519-
dc.description.abstractOBJECTIVE: To investigate the quality of images reconstructed with adaptive statistical iterative reconstruction V (ASIR-V), using pediatric head CT protocols.
METHODS: A phantom was scanned at decreasing 20% mA intervals using our standard pediatric head CT protocols. Each study was then reconstructed at 10% ASIR-V intervals. After the phantom study, we reduced mA by 10% in the protocol for <3-year-old patients and applied 30% ASIR-V and by 30% in the protocol for 3- to 15-year-old patients and applied 40% ASIR-V.
RESULTS: Increasing the percentage of ASIR-V resulted in lower noise and higher contrast-to-noise ratio (CNR) and preserved spatial resolution in the phantom study. Compared to a conventional-protocol, reduced-dose protocol with ASIR-V achieved 12.8% to 34.0% of dose reduction and showed images of lower noise (9.22 vs. 10.73, P = 0.043) and higher CNR in different levels (centrum semiovale, 2.14 vs. 1.52, P = 0.003: basal ganglia, 1.46 vs. 1.07, P = 0.001: and cerebellum, 2.18 vs. 1.33, P < 0.001). Qualitative analysis showed higher gray-white matter differentiation and sharpness and preserved overall diagnostic quality in the images with ASIR-V.
CONCLUSIONS: Use of ASIR-V allowed a 12.8% to 34.0% dose reduction in each age group with potential to improve image quality.
KEY POINTS: * It is possible to reduce radiation dose and improve image quality with ASIR-V. * We improved noise and CNR and decreased radiation dose. * Sharpness improved with ASIR-V. * Total radiation dose was decreased by 12.8% to 34.0%.
-
dc.language.isoen-
dc.subject.MESHAdolescent-
dc.subject.MESHBrain-
dc.subject.MESHChild-
dc.subject.MESHChild, Preschool-
dc.subject.MESHClinical Protocols-
dc.subject.MESHFemale-
dc.subject.MESHHumans-
dc.subject.MESHMale-
dc.subject.MESHPhantoms, Imaging-
dc.subject.MESHQuality Improvement-
dc.subject.MESHRadiation Dosage-
dc.subject.MESHRadiographic Image Interpretation, Computer-Assisted-
dc.subject.MESHReproducibility of Results-
dc.subject.MESHRetrospective Studies-
dc.subject.MESHTomography, X-Ray Computed-
dc.titleHead CT: Image quality improvement with ASIR-V using a reduced radiation dose protocol for children-
dc.typeArticle-
dc.identifier.pmid28116512-
dc.contributor.affiliatedAuthor김, 현지-
dc.type.localJournal Papers-
dc.identifier.doi10.1007/s00330-017-4733-z-
dc.citation.titleEuropean radiology-
dc.citation.volume27-
dc.citation.number9-
dc.citation.date2017-
dc.citation.startPage3609-
dc.citation.endPage3617-
dc.identifier.bibliographicCitationEuropean radiology, 27(9). : 3609-3617, 2017-
dc.embargo.liftdate9999-12-31-
dc.embargo.terms9999-12-31-
dc.identifier.eissn1432-1084-
dc.relation.journalidJ009387994-
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Radiology
Files in This Item:
There are no files associated with this item.

qrcode

해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse