Reducing registration error in cross-beam vector doppler imaging with position sensor.
Reducing registration error in cross-beam vector doppler imaging with position sensor.
复制标题
使用位置传感器减少交叉束矢量多普勒成像中的配准误差。
DOI：
10.1109/iembs.2009.5332627
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
Kim,Yongmin
中科院分区：
文献类型：
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作者：
Xu,Canxing;Beach,KirkW;Leotta,Daniel;Stuzman,Edward;Kim,Yongmin
在过去的几十年中，人们提出了各种矢量多普勒方法，通过测量血流的速度和方向来克服传统频谱多普勒和彩色多普勒中的多普勒角度依赖性。然而，它们尚未被日常使用，因为它们大多数需要专门的硬件，而这在商业超声系统中是不可用的。使用从不同转向波束角度获得的彩色多普勒图像的替代方法（交叉波束方法）更为可行，但在配准多个彩色多普勒图像时存在错误，因为它们不是同时采集的。为了缓解这个问题，我们评估了一种交叉束矢量多普勒系统，该系统通过位置传感器在空间上记录来自两个不同角度的两个彩色多普勒图像，并在时间上与心电图同步。 9 名受试者的配准误差平均从 2.49 毫米减少到 0.92 毫米。还提供了健康受试者和患有动脉粥样硬化斑块的患者的矢量多普勒颈动脉图像。
Various vector Doppler methods have been proposed in the last several decades to overcome the Doppler angle dependency in both conventional spectral Doppler and color Doppler by measuring both the speed and direction of blood flow. However, they have not been adopted for routine use because most of them require specialized hardware, which is not available in commercial ultrasound systems. An alternative approach (cross-beam method) that uses color Doppler images obtained from different steered beam angles is more feasible, but there is error in registering multiple color Doppler images because they are not acquired simultaneously. To alleviate this problem, we have evaluated a cross-beam vector Doppler system that registers spatially with a position sensor two color Doppler images from two different angles and temporally with ECG synchronization. The registration error was reduced to an average of 0.92 mm from 2.49 mm in 9 human subjects. Vector Doppler carotid artery images of a healthy subject and a patient with atherosclerotic plaques are also presented.