CT扫描中不同对比剂注射速率对心腔大血管内气体产生的影响和预防陆福华,吴芳,薛翔文,赵艳英,陆建常广西壮族自治区民族医院放射科广西南宁530001【摘要】目的探讨CT增强扫描中,不同对比剂注射速率对心腔和大血管内气体产生的原因和影响因素并提出防范措施。方法选取2018年10月~2019年11月冠状动脉CTA、肺动脉CTA和胸部增强扫描各200例患者影像资料,分析不同对比剂注射速率在心腔和大血管气体发生率、影像表现和气体分布特点,并与2020年2~12月间一组高注射速率下采取了预防措施的冠状动脉CTA气体发生率进行对比分析。结果注射速率为5ml/s的冠状动脉CTA和注射速率4.5ml/s的肺动脉CTA气体发生率分别为6.5%和3.5%,而注射速率为3ml/s的胸部CT增强扫描无1例产生气体。结论相同条件下,对比剂注射速率越大,心腔和大血管内气体发生率越高,高压管路连接处密封不良,可能是气体产生的主要原因之一。【关键词】血管;对比剂;体层摄影术,X线计算机中图分类号:R543;R814.42文献标识码:A文章编号:1006-9011(2023)04-0563-04TheeffectandpreventionofdifferentinjectionratesofcontrastagentonthegenerationofgasinCTangiographyLUFuhua,WUFang,XUEXiangwen,ZHAOYanying,LUJianchangDepartmentofRadiology,MinzuHospitalofGuangxiZhuangAutonomousRegion,Nanning530001,China【Abstract】ObjectiveToexploretheriskfactorsofdifferentcontrastagentinjectionratesongasproductionintheheartcavityandlargebloodvesselsinenhancedCTscanning,andtoproposepreventivemeasures.MethodsTheimagingdataonto200ca-sesofcoronaryarteryCTangiography(CTA),200casesofpulmonaryarteryCTA,and200casesofchestenhancedscanfromOctober2018toNovember2019wereretrospectivelyanalyzed.Weanalyzedthegasincidence,imagingmanifestationsandgasdistributioncharacteristicsofdifferentinjectionratesofcontrastagentintheheartcavityandlargebloodvessels,andcomparedwithCTAofagroupthathadtakenmeasurestopreventgasgenerationofhighinjectionrates.ResultsTheinjectionratesofcor-onaryarteryCTAandpulmonaryarteryCTAwere5m/sand4.5ml/s,respectively,andthegasgenerationrateswere6.5%and3.5%,respectively.However,withthechestCTenhancementataninjectionrateof3ml/s,thegasgenerationrateswere0.0%.ConclusionUnderthesam...