Carotid artery wall motion estimated from B-mode ultrasound using region tracking and block matching
Carotid artery wall motion estimated from B-mode ultrasound using region tracking and block matching
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DOI：
10.1016/s0301-5629(02)00760-3
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发表时间：
2003-01-01
影响因子：
2.9
通讯作者：
Nicolaides, AN
中科院分区：
文献类型：
--
作者：
Golemati, S;Sassano, A;Nicolaides, AN
颈动脉粥样硬化斑块相对于相邻壁的运动可能与脑事件的风险有关。应用运动估计的定量方法从2-D B型超声（US）图像序列中分析动脉壁运动。利用相关系数作为匹配准则，跟踪图像的散斑图。所选感兴趣区域（ROI）的大小会影响运动分析结果;建议跟踪壁腔界面区域的最佳尺寸为3.2 x 2.5 mm（2），跟踪组织内区域的最佳尺寸为6.3 x 2.5 mm（2）。结果显示预期的径向周期性运动和动脉壁的一些轴向运动。该方法可用于进一步研究颈动脉壁和斑块的轴向运动，从而为动脉粥样硬化的机制提供有用的见解。(C)2003年世界医学超声生物学联合会。
The motion of the carotid atheromatous plaque relative to the adjacent wall may be related to the risk of cerebral events. A quantitative method for motion estimation was applied to analyse arterial wall movement from sequences of 2-D B-mode ultrasound (US) images. Image speckle patterns were tracked between successive frames using the correlation coefficient as the matching criterion. The size of the selected region-of-interest (ROI) was shown to affect the motion analysis results; an optimal size of 3.2 x 2.5 mm(2) was suggested for tracking a region at the wall-lumen interface and of 6.3 x 2.5 mm(2) for one within the tissue. The results showed expected cyclical motion in the radial direction and some axial movement of the arterial wall. The method can be used to study further the axial motion of the carotid artery wall and plaque and, thus, provide useful insight into the mechanisms of atherosclerosis. (C) 2003 World Federation for Ultrasound in Medicine Biology.