彩色多普勒超声对下肢深静脉血栓的临床观察(1)
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【摘要】目的 探讨二维及彩色多普勒血流成像在下肢深静脉血栓(DVT)的诊断及疗效观察中的应用价值。方法 通过二维和CDFI检测86例急慢性下肢深静脉血栓的患者，观察静脉管径，受累部位的声像图改变，彩色多普勒及脉冲多普勒(PW)的血流、频谱特征，并观察追踪血栓发病原因, 随访治疗前后病情变化。结果 急性血栓患者静脉管径增宽，内见不规则低回声，CDFI显示完全阻塞者无血流通过，PW无血流信号，不完全阻塞者显示充盈缺损，且血流缓慢，PW见低速血流频谱，经溶栓及肢体活动等治疗后，血流逐渐恢复。慢性血栓管径粗细不均，内部回生增强，CDFI见“轨道征”血流，有侧枝循环形成，治疗后范围缩小，需时较长。左下肢发病53例(61.6%)明显多于右下肢,发病原因中外伤及长期卧床者居多, 也有部分病例为恶性肿瘤压迫及先天性髂静脉受压的患者。结论 用CDFI论断下肢深静脉血栓是一种无创、快捷的实用方法，可追踪病因，对指导临床治疗并观察疗效有重要价值。
【关键词】彩色多普勒超声 下肢深静脉血栓
中图分类号：R445.14 文献标识码：B 文章编号：1005-0515(2012)1-330-02
Clinical Observation of Color Doppler Flow Imaging in Diagnosis and Therapy of Deep Venous Thrombosis in Lower Limbs
Li Ming
(Department of Uitrasound, Liaoningine liao ning sheng can ji ren kang fu zhong xin,Shen yang China 110015)
【Abstract】Objective To explore the clinical value of 2D-CDFI in the diagnosis and evaluating treatment of deep venous thrombosis (DVT) in lower limbs. Methods: eighty-six acute and chronic patients of deep venous thrombosis in lower limbs were examined with 2D-CDFI. The diameter, location extent, the characteristics of blood flow on CDFI and PW were detected and analyzed, To find the cause of DVT and The patients were followed up before and after treatment. Results The venous diameter was clearly increased in acute DVT patients and the deep veins were irregular in shape and hyperdicrotic. The complete obstructive veins had no blood signals on CDFI and PW. The partial obstructive ones had partial blood signals on CDFI. The velocity of the flows decreased obviously. The venous flows were restored gradually after thrombolysis therapy and active exercise. Chronic DVT patients had irregular diameter and internal appeared hyperechoic, CDFI had signs of blood flow on track and have side venous cycle. The extent of DVT shrank after long-time therapy. Left lower limbs were found in 53 patients(61.6%),it is much more than right lower limbs were found. The cause of disease, surgical operated and long-time in-bed is the main cause of disease but part cause is m alignant tumors compression and congenital iliac vein compression ......
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