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快速、准确地对冠状动脉狭窄程度作出分析,这对治疗和了解冠状动脉疾病极为重要。由于自动化系统将分析中的偏差与变分减小到最小程度,本文作者采用IBM PC-XT计算机建立了一种自动、定量分析冠状动脉的系统。胶片图象(35mm)通过IBM PC-XT计算机进行电影～视屏转换,然后进行数字化,定出一条近似的中心线,计算机自动探测边缘,校芷X线胶片放大,并计算动脉尺寸。根据已知的血管尺寸,实际值与所计算的尺寸之间校准系数为0.996(P<0.01),估计标准差为0.07mm,
Rapid and accurate analysis of the degree of coronary artery stenosis, which is extremely important for the treatment and understanding of coronary artery disease. Due to the automation system minimizing deviations and variances in the analysis, the authors used the IBM PC-XT computer to establish a system for automatic and quantitative analysis of the coronary arteries. The film image (35mm) is converted from film to video using an IBM PC-XT computer, digitized, approximated to a centerline, the computer automatically detects the edges, magnifies the X-ray films and calculates the arterial size. Based on the known vessel size, the calibration coefficient between the actual and the calculated size was 0.996 (P <0.01) with an estimated standard deviation of 0.07 mm,