Three-Dimensional Tracking Method of Tissue Motion with Biplane Images
Three-Dimensional Tracking Method of Tissue Motion with Biplane Images
复制标题
双平面图像组织运动三维跟踪方法
DOI：
10.1143/jjap.44.4561
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发表时间：
2005
影响因子：
1.5
通讯作者：
S. Umemura
中科院分区：
文献类型：
--
作者：
Hiroumi Yoshikawa;T. Azuma;K. Kawabata;Y. Taniguchi;S. Umemura
对于实时三维组织运动检测使用双平面超声图像，我们研究了效率的相关方法，其中每个感兴趣的区域（ROI）被划分为子区域，这样的小，在每个子区域的变形可以被忽略时，估计其运动和垂直于图像平面。分析了利用互相关法灵敏估计组织运动时垂直于图像平面的位移允许范围。体外实验结果表明，当两帧图像之间的垂直位移小于0.4 mm时，可以检测到图像平面中的速度分量。此外，还发现子区域的大小必须大于散斑的大小。我们还在人体肝脏上进行了体内实验，发现心脏收缩引起的组织运动可以通过互相关方法检测到。所获得的结果表明，所提出的方法在医疗应用中的潜在有用性，如微创治疗的图像引导。
For real-time three-dimensional tissue motion detection using biplane ultrasound images, we investigated the efficiency of a correlation method in which each region of interest (ROI) is divided into sub-regions so small that the deformation in each subregion can be ignored when estimating its motion in and perpendicular to the image planes. The allowed range of displacement perpendicular to the image planes in sensitively estimating tissue motion by cross-correlation was analyzed. In vitro results with a phantom revealed that the velocity component in the image plane could be detected when the perpendicular displacement between two consecutive frames was as small as 0.4 mm. Moreover it was also revealed that the subregion size must be larger than the speckle size. We also performed in vivo experiments on human liver and found that the tissue motion induced by systole was detectable by our cross-correlation method. The obtained results demonstrated the potential usefulness of the proposed method in medical applications, such as an image guide for minimally invasive therapy.