彩色多普勒超声心动图在主动脉夹层诊断中的应用

Application of Color Doppler Ultrasonography in the Diagnosis of Aortic Dissection

目的 :探讨经胸彩色多普勒超声心动图在主动脉夹层 (AD)诊断中的应用价值。方法 :分析经手术证实的 46例AD患者的经胸彩色多普勒超声心动图声像图特征、DeBakey分型和并发症。结果 :经胸彩色多普勒超声心动图见AD病变动脉内撕裂内膜呈条状反射 ,并见典型真假腔 ;彩色多普勒血流显像(CDFI)见主动脉真腔内彩色血流信号明亮丰富 ,假腔内显示较暗淡的彩色血流信号。本组 46例AD中仅 19例破裂口清晰可见。结论 :剥脱内膜是本病可靠的诊断依据 ,AD通常假腔大 ,真腔小 ;对疑有AD病例 ,经胸彩色多普勒超声心动图及彩色多普勒血流显像是一种无创、可靠。

Objective:The study was to evaluate the value of transthoracic two-dimensional ultrasonography and color Doppler flow imaging(CDFI)in the diagnosis of aortic dissection. Methods:The ultrasound screenage findings,typing and complications of aortic dissection were analyzed in 46 cases proved by surgical exploration. Results:The typical two-dimensional ultrasonogram revealed true and false lumen and lacerated intima flap of aortic dissection.CDFI disclosed blood flow signals in the true and false lumens of the aortic dissection patients.Leaks of intimae were clearly seen only in 19 cases. Conclusion:Lacerated intima flap is the most reliable evidence for the diagnosis of aortic dissection.The false lumen is usually larger than the true one.Transthoracic two-dimensional ultrasonography and CDFI is a non-invasive,reliable medical imaging technique and can be used as a method of choice for the diagnosis of aortic dissection.