老年颈动脉粥样硬化三维超声成像与二维超声成像的比较

目的: 通过与二维超声成像的比较,对老年颈动脉粥样硬化的三维超声成像临床价值进行评价. 方法: 老年颈动脉粥样硬化患者40例,年龄60～82岁,均经二维超声证实有一处以上的粥样斑块形成. 选用仪器为Acuson X/P 128彩色多普勒超声诊断仪,L5/7 MHz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,扫描过程包括血管长轴扇形扫描和血管短轴平行扫描. 脱机进行颈动脉的三维重建与显示. 结果:所有患者成功完成三维超声检查. 颈动脉的三维重建图像能够立体完整地显示出颈总动脉、颈内动脉、颈外动脉,并可以对斑块的确切部位、立体形状、表面特征、血管腔大小、血流空间走行进行直观地三维观察. 结论:与二维超声成像比较,老年颈动脉粥样硬化的三维超声成像具有以下优点:病变显示更为直观,病变特征更为详尽,病变评价更为准确.

Comparison of three-dimensional ultrasonography and two-dimensional ultrasonography in elderly patients with carotid atherosclerosis

AIM: To evaluate the characteristics and clinical value of three dimensional color Doppler imaging in elderly patients with carotid atherosclerosis by comparing it with two dimensional ultrasonic imaging. METHODS: Forty elderly patients with carotid atherosclerosis, aged from 60 to 82 years and confirmed to have one or more atheromatous plaques by two dimensional ultrasonography, 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 process of scanning included sector scanning along arterial long axis and parallel scanning along arterial short axis. The three dimensional reconstructions and displays of carotid artery were conducted off line. RESULTS: The three dimensional examinations of all patients were conducted successfully. The three dimensional reconstruction images of carotid artery displayed stereo structure of common carotid artery, internal carotid artery and external carotid artery continuously and completely, and showed the stereo shape, surface character and exact position of plaque, volume of vessel, and spatial distribution of blood flow in a way of direct perception. CONCLUSION: Commpared with the two dimension ultrasonography, the three dimensional color Doppler ultrasonography of elder patients with carotid atherosclerosis is more intuitionistic of the pathological changes, more exhaustive of the pathological characteristics and more accurate in the pathological evaluation.