Bhargava V
University of California, San Diego.
Comput Med Imaging Graph. 1990 Mar-Apr;14(2):107-18. doi: 10.1016/s0895-6111(05)80045-x.
A new computerized video intensity based method to evaluate regional wall motion for a frame by frame analysis has been developed. A region of interest is defined, and its average time-intensity curve is computed for the cardiac cycle. For each time interval the video intensity for a pixel in the region of interest is correlated with the average for the whole ventricle and its slope and correlation coefficient are calculated to derive two functional images. This technique utilizes images either from levophase or direct opacification of the left ventricle, and it is insensitive to RR-interval changes.
已开发出一种基于计算机化视频强度的新方法，用于逐帧分析评估局部室壁运动。定义感兴趣区域，并计算其在心动周期中的平均时间-强度曲线。对于每个时间间隔，将感兴趣区域内一个像素的视频强度与整个心室的平均值进行关联，并计算其斜率和相关系数，以得出两个功能图像。该技术可利用左心室造影相或直接造影的图像，并且对RR间期变化不敏感。
