目的探讨彩色多普勒超声诊断肝移植术后下腔静脉栓塞及狭窄的价值。
Purpose: To evaluate the value of color Doppler ultrasound in diagnosing IVC thrombosis and stenosis after orthotopic liver transplantation(OLT).
结论腔静脉滤器置入是预防肺动脉栓塞的有效方法。
Conclusion The vena cava filter implantation is a effective method to prevent pulmonary embolism.
结论：下腔静脉滤器用于预防肺动脉栓塞是一种安全有效的方法，具有广阔的应用前景。
Conclusions: The inferior vena cava filter implantation is a safe and effective method to prevent pulmonary embolism. It has a broad range of utility.
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