彩色多普勒超声及超声造影在肝移植术后血管并发症中的应用

目的探讨彩色多普勒超声（CDU）和超声造影（CEUS）在检测肝移植术后血管并发症中的应用价值并对两者进行比较。方法对肝移植术后患者常规行CDU检查，对CDU疑肝血管血流异常患者行超声造影检查，观察肝动脉、门静脉、下腔静脉及肝实质的血流灌注，对其中29例经数字减影血管造影术（DSA）或CT血管造影（CTA）／MR血管造影（MRA）证实病例的CDU及造影检查资料进行分析。结果术后血管并发症患者29例，其中肝动脉狭窄22例，肝动脉血栓闭塞3例（肝动脉血栓闭塞合并肝梗死2例），门静脉狭窄2例，下腔静脉狭窄1例，另1例为肝门部血肿并肝动脉、门静脉受压狭窄。CDU显示25例狭窄均有血流参数异常，但不能判断狭窄部位及程度，3例血栓闭塞者，动脉血流均未显示，但不能肯定诊断；超声造影可明确诊断肝动脉血栓闭塞，显示肝动脉、门静脉及下腔静脉狭窄，与DSA或CTA／MRA结果符合率分别为100％（3，3）、90．9％（20／22）、100％（2／2）及100％（1／1）。结论CDU与超声造影互为补充，有利于提高肝移植术后血管并发症的诊断准确性。

Application of color Doppler ultrasound and contrast-enhanced ultrasound in detecting vascular complications after liver transplantation

Objective To evaluate and compare the value of color Doppler ultrasound(CDU) with contrast-enhanced ultrasound(CEUS) in detecting vascular complications after liver transplantation.Methods CDU was used as routine examination in all patients after liver transplantation.The liver transplantation recipients suspected by CDU with vascular complications underwent CEUS.Hepatic artery,portal vein,inferior vena cava and perfusion of liver parenchyma were observed.Twenty-nine patients who were confirmed by CT angiog...