颈动脉血流的三维彩色多普勒成像研究

目的 探讨三维彩色多普勒超声进行颈动脉血流立体成像及在颈动脉粥样硬化血流显像方面的特征。方法 健康志愿者30例；颈动脉粥样硬化患者30例。选用仪器为Acuson X／P 128彩色多普勒超声诊断仪，L5／7MHz线阵探头；TomTec三维彩色多普勒成像系统(Ecohscan 4．2)。三维图像采集方法选用自由臂方式。脱机进行血流的三维重建与显示。结果 颈动脉血流的三维彩色多普勒图像能够连续、完整地显示出颈总动脉、颈内动脉、颈外动脉内的血流空间走行。粥样斑块形成的颈动脉三维图像可以直观立体地显示出管腔内血流束的立体变化特征。结论 三维彩色多普勒超声成像是一项新的无创性的血流立体成像技术，对于颈动脉血流观察及病变的影像学诊断具有重要的临床价值和应用潜力。

Study of Three-dimensional Color Doppler Ultrasonography on Carotid Artery

Objective:The aim of the study was to evaluate the characteristics of carotid artery flow imaging and carotid atherosclerosis using three-dimensional color Doppler imaging.Methods:Thirty healthy volunteers and 30 patients with carotid atherosclerosis were examined.The instruments used included Acuson X/P 128 color Doppler ultrasonography diagnosis system with L5/7 MHz linear array transducer and TomTec three-dimensional color Doppler ultrasonography system (Echoscan 4.2).The free-hand mode of acquiring imaging was employed.The three-dimensional reconstructions and displays of blood flow were finished off-line.Results:The three-dimensional reconstruction images of carotid artery could display stereo flow structures of common carotid,internal carotid and external carotid arteries continuously and entirely.The three-dimensional images of carotid artery with atheromatous plaques could directly be shown as blood flow spatial changes.Conclusions:The three-dimensional color Doppler ultrasonography is a new and noninvasive technique.It has important clinical value and application potentialities for blood flow imaging of carotid artery,and diagnosis of carotid atherosclerosis.