P.M. Duffieux Opt. Lab., Besancon.
IEEE Trans Med Imaging. 1990;9(1):5-10. doi: 10.1109/42.52988.
An automated process for the detection of the left ventricular end diastolic contour is defined. The extraction of a pure left ventricular behavior, obtained by the application of the Gram-Schmidt orthogonalization process on a set of vectors representing the three main typical behaviors present in the scintigraphic sequence, yields the synthesis of a new factorial image particularly matched for the extraction of the left ventricular region of interest (ROI). An edge following technique with conditional dilation applied simultaneously on the two binary images resulting from processing the new left ventricular factorial and the average images with a Laplacian operator gives a robust method for the detection of the left ventricular ROI.
定义了一种自动检测左心室舒张末期轮廓的方法。通过在代表闪烁序列中存在的三种典型行为的一组向量上应用 Gram-Schmidt 正交化过程，提取出纯左心室行为，从而合成了一种新的因子图像，特别适合提取左心室感兴趣区（ROI）。一种带有条件膨胀的边缘跟踪技术同时应用于处理新的左心室因子图像和使用拉普拉斯算子处理平均图像后得到的两个二进制图像，为检测左心室 ROI 提供了一种鲁棒的方法。
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