Duplex ultrasound imaging: vascular applications.
Duplex ultrasound imaging: vascular applications.
复制标题
双工超声成像：血管应用。
作者：
S. Wetzner;L. C. Kiser;J. S. Bezreh
最近开发的双超声成像系统结合了高分辨率实时成像和同步多普勒分析，提供了血流动力学显著闭塞性血管病变的准确评估。该系统用于颅外颈动脉、髂股动脉和血液透析分流的评估。该系统获取有关血流速度、管腔面积、斑块组成和溃疡以及血流动力学湍流的信息。通过这种方法诊断出血流动力学显著病变的140例患者进行了血管造影评估。两种模式之间的相关性产生了0.94的敏感性，0.88的特异性和0.92的总体准确性。所获得的诊断信息可用于区分可能通过手术矫正的病变与需要药物治疗或随访的病变。
A recently developed duplex ultrasonic imaging system that combines high-resolution real-time imaging with simultaneous Doppler analysis provides accurate evaluation of hemodynamically significant occlusive vascular lesions. This system was used in the evaluation of the extracranial carotid arteries, iliofemoral arteries, and hemodialysis shunts. The system obtains information regarding blood velocity, lumen area, plaque composition and ulceration, and hemodynamic turbulence. A total of 140 patients with hemodynamically significant lesions diagnosed by this method was evaluated angiographically. Correlation between the two modalities yielded a sensitivity of 0.94, a specificity of 0.88, and an overall accuracy of 0.92. The diagnostic information obtained can be used to differentiate potential surgically correctable lesions from those that require medical therapy or follow-up.