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1、MSCT肺动脉造影联合间接法下肢静脉造影技术探讨作者：岑人丽邓宇陈苓曾庆思李新春林翰菲张超亮【摘要】临床怀疑肺动脉栓塞患者，按间接法下肢静脉CTV延时时间的不同，随机分为两组，每组各20例。用对比剂跟踪技术（SureStar），先进行MSCT肺动脉造影，然后行下肢静脉造影扫描，A组延迟180～210s扫描；B组延迟240～270s扫描。扫描后分别测量髂总静脉、股静脉、腘静脉的强化CT值。结果40例患者肺动脉均显示清晰。A组髂总静脉CT值平均为115.45±12.95Hu,股静脉CT值平均为110.05±10.82Hu，腘静脉CT值平均为121.85±17.37Hu；B组髂总静脉CT
2、值平均为103.05±13.50Hu,股静脉CT值平均为103.05±8.83Hu，腘静脉CT值平均为111.30±11.79Hu。A组与B组比较存在显著性差异（P<0.05），A组静脉内的造影剂浓度高于B组。诊断肺栓塞18例，合并下肢静脉血栓10例。结论MSCT肺动脉造影联合间接法下肢静脉造影时，应用对比剂跟踪触发扫描技术（SureStar）肺动脉显示良好，延迟180～210s扫描能获得更好的下肢静脉成像效果。【关键词】肺栓塞静脉血栓形成体层摄影术X线计算机静脉造影术动脉造影术12[Abstract]ObjectiveToinvestigatetheclinicalappl
3、icationofCTpulmonaryangiographycombinedindirectmethodoflowerextremityvenousimagingtechniques.MethodsFortypatientssuspectedofpulmonaryembolismwererandomlydividedinto2groups(groupAandB)bydifferentdelayCTVtimeofindirectmethodoflowerextremity,AllpatientsundergoneCTArteriographybyconstrastmediumSur
4、eStartechnique,Afterthis,IngroupA(n=20),CTvenographylowerextremitywereperformedby180~210sdelaytime;IngroupB(n=20),CTvenographyoflowerextremitywereperformedby240~270sdelaytime.TheenhancementCTvalueofcommoniliacvein,femoralveinandpoplitealveinweremeasuredrespectively.ResultsPulmonaryarteryof40ca
5、sesweredemonstratedclearly,IngroupA,theCTmeanvalueofcommoniliacvein,femoralveinandpoplitealveinare115.45±12.95Hu,110.05±10.82and121.85±17.37Hu;IngroupB,theCTmeanvalueofcommoniliacvein,femoralveinandpoplitealveinare103.05±13.50Hu,103.05±8.83Huand111.30±11.79Hu,TheCTvalueofcommoniliacvein,femora
6、lveinandpoplitealveinbetweengroupAandgroupBwasfoundstatisticallysignificantlydifferent(P<0.05).ItsuggestedthatcontrastconcentrationofveiningroupAwashigherthantheseingroupB.18casespulmonaryembolismwere12diagnosed,10caseswithpulmonaryembolismaccompanyingvenousthrombosiswerediagnosed.Conclusio
7、nUsingconstrastmediumSureStartechniquecandetectthepulmonaryarteryclearly,delay180-210Sscancanobtainbetterimagethelowerextremityvein.[Keywords]pulmonaryembolism;venousthrombosis;bodysectionradiography;X-raycomputed;venography;Arteriograp
