The Objective Measurement Of Coronary Obstructions By Digital Image Processing
The Objective Measurement Of Coronary Obstructions By Digital Image Processing
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通过数字图像处理客观测量冠状动脉阻塞
DOI：
10.1117/12.934497
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发表时间：
1982
期刊：
影响因子：
--
通讯作者：
A. Both
中科院分区：
文献类型：
--
作者：
K. Barth;U. Faust;E. Epple;K. Wedekind;A. Both
动脉狭窄程度的评估是冠心病诊断和旁路手术指征的重要指标。本文开发了一种系统，用于在计算机上对35mm电影心动图进行数字化处理。通过典型的密度曲线自动识别充满造影剂的容器。轮廓查找考虑了投影波的特殊边缘形式。当球体轮廓确定后，就可以很容易地计算出直径变窄的程度。评估阻塞的进一步步骤是对血管宽度进行积分，并对主要的指数成像过程进行重新变换，以分别重建栓子的原始横截面积或其直径。这样，即使只有一个投影，对偏心度的半定量预测也成为可能。本文简要讨论了计算机测量与已知模型尺寸和临床表现的相关性。
The assessment of stenotic arteries is an important parameter for the diagnosis of the coronary heart disease and for the indication of a bypass operation. A system has been developed to digitize and process frames from 35 mm- cinecardiographic films on the computer. Vessels filled with contrast medium are recognized automatically by their typical density profiles. The contour finding takes into account the special edge form of the projected boli. When the bolus contours are determined the degree of diameter narrowing can easily be calculated. A further step to evaluate an obstruction is to integrate over the vessel width and to re-transform the mainly exponential imaging process in order to reconstruct the original cross-sectional area of the bolus or its diameters, respectively. In this way even with only one projection a semi-quantitative prediction of an excentricity becomes possible. The correlation of computer measures with known model dimensions and with clinical findings is discussed briefly.