低浓度碘对比剂在双源ct冠脉成像中的应用-研究

《低浓度碘对比剂在双源ct冠脉成像中的应用-研究》由会员上传分享，免费在线阅读，更多相关内容在应用文档-天天文库。

1、AppblicationoflowconcentrationsofcontrastagentslnDSCTcoronaryangiograpphyPostgradute：YahLiangliangTutor：Prof．YangXuehuaRadiologyDepartment，TheFirstAffiliatedHospitalofZhengzhouUniversityZhengzhou,China,450052AbstractObjectiveToinVestigatemevalueoflowconcentrations，lowdoseofcontrastagents肌d】

2、owI"adiationdosecombinedwithsinogram‘affirmediteratiVerecons仇lcnon(SAFIRE)improv：ingcoron叫arteryimagequalityandreducingradi灿ndoseandtheiIlcidencerateofcontrastmediuminducednephropathyinsecond。gencranondual．sou∽eCTSequenceorFlashSCanmodeofcoronaryarteD，蚰a粤ng·MethodsThisthesiswasdividedinto2p

3、an&⋯．．Part1：Forty-twopatientswithcoronaryarterydiseasewererandomlyd1ⅥdedmgroupA(370IIlg№1120kV)andgroupB(270mgI／mllOOkV)，whichw雠allscaIledinSequencescanmode．TheimagesofgroupBwerereconstructedwnnSAF承E锄dtakenasgroupC．Thegeneralinformation，SCantime,thedoseotcon咖stagent，th,eeffectiveradiationdo

4、seandcoronaryarteryse舯ent1matgequantyofgroupAandgroupB(C)werecompared．ThecoronaryCTValueaIld1magenoise(SD)weremeatsuredandcomparedinaorta,，leftcoronaryandn曲tcoronary,thenth,eSNRandCNRamongthreegroupswerecalculatedandcomp删’IIIAbstractPart2：sixty-sixpatientswithcoronaryarterydiseasewererandom

5、lydividedintogroupA(370mgI／ml，60m1)、groupB(370mgI／ml，(weightx0．6)m1)andgroupC(320mgI／ml，(weightx0．Orrd，SAFIRE)，whichwereallscanedinFlashspiralscanmode．Thedifferenceofimagequalitywerecomparedamong3groups；ThedifferenceofcoronaryCTvalue，SD，SNRandCNRweremeasuredandcomparedinaorta．1eftcoronaryan

6、drightcoronary．ResultsPart1：Therewerenotstatisticallysignificantinage，BMI，averageheartrate，scantimeandcontrastdosageofgroupAandgroupB(C)(allP>0．05)，whiletheED，CTDIvolandthecoronaryarterysegmentimagequalityhadstatisticallysignificant(allP<0．05)。ThecoronaryCTvaluesinaorta，leftcoronaryandright

7、coronaryamongthreegroupswereallnotstatisticallysignificant(allP>0．05)，whilethenoise，SNR，CNRhadstatisticallysignificant(allP<0．05)．TheimagenoisewasthehighestandSNR，CNRwerethelowestingroupB，andtherewerenotstatisticallysignificantinnoise．SNRandCNRbetweengro