ThestudyoflowerextremityCTangiographybylowradiationdoseandlow contrastmedium withsinogram-affirmediterativereconstruction
10.3969/j.issn.1002-1671.2019.04.031
- VernacularTitle:双低技术联合基于原始数据的迭代重建在下肢动脉CT血管成像中的应用
- Author:
Yan JIANG
1
;
Miao Miao GUO
;
Nan DIAO
;
Guina MA
;
Ming HE
;
Tianhe YE
;
Nan SHEN
;
Ping HAN
Author Information
1. 华中科技大学同济医学院附属武汉中心医院影诊断科
- Keywords:
lowerextremitycomputedtomographyangiography;
sinogram-affirmediterativereconstruction;
lowdose
- From:
Journal of Practical Radiology
2019;35(4):638-642
- CountryChina
- Language:Chinese
-
Abstract:
Objective ToevaluateimagequalityoflowerextremityCTAoflowradiationdoseandlowcontrastmediumprotocol withsinogram-affirmediterativereconstruction(SAFIRE).Methods Thisstudyincluded116patientswhoreferredtolowerextremityCT angiographyusinga128-sliceCTscanner.Accordingtovoltageandcontrastmediumconcentration,patientsweredividedintofour groups:100kV+350mgI/mL,100kV+320mgI/mL,100kV+300mgI/mL,80kV+CarekV+300mgI/mL.Imagereconstructionunderwent conventionalfilteredback-projection (FBP)andSAFIREtechniqueineachprotocoltocompareSNR,CNRofarterialimages.Results Comparisonoftwosubgroupsinthesamegroup,SAFIREhadsignificantlyhigherimagequalitythanFBP.Comparisonamong groupsshowed:imagequalityinlowcontrastmediumandlowradiationdoseSAFIREgroupcouldreachsimilarorbetterthanthatin higherdoseFBPgroup.SAFIREcouldreduceimagenoiseandimproveimageSNRandCNR.Conclusion InlowerextremityCTA, 80kV+CarekV,300mgI/mLcontrastmediumwithSAFIREexamineprotocolcouldreducecontrastmediumconcentrationandradiationdose withnocompromiseddiagnosticdemand.
