前言目的评价螺旋CT肺动脉造影(spiralCTpulmonaryangiography,SCTPA)诊断肺栓塞的临床价值及其限度。方法52例肺栓塞均行SCTPA检查。SCTPA扫描时间为0.8s,扫描层厚3mm,螺距1.5~2.0,重建层厚1mm,重建方法包括MIP、MPR和SSD。结果统计52例肺栓塞的2898支血管,其中927支血管SCTPA检出肺栓塞直接征象,约占32.0%;1302支段以上肺动脉中,728支显示肺栓塞的直接征象;1896支亚段肺动脉中,199支显示直接征象。平扫显示间接征象共113例次。结论SCTPA是一种高效、无创性的肺栓塞检查方法,对段以上肺栓塞不仅可做准确的定性诊断,而且可定量分析,但对亚段以下肺栓塞的诊断受限。
ObjectiveToevaluatetheclinicalapplicationofspiralCTpulmonaryangiography(SCTPA)inthediagnosisofpulmonaryembolism(PE)anditslimitation.Methods52casesofPEwereanalyzed.SCTPAwereperformedinallcaseswithslicethickness3mm,pitch1.5~2.0,scanningtime0.8s,reconstructionthickness1mm.ThereconstructionsofSCTPAincludedMIP,MPRandSSD.Results2898pulmonaryarteriesin52caseswereobserved.ThedirectmanifestationsofPEwereshowedin927pulmonaryarteries(32.0%)bySCTPA,in...