Riediger G, Grävinghoff L M, Höhne K H, Keck E W
Institute for Mathematics and Data Processing in Medicine, Hamburg, FRG.
Cardiovasc Intervent Radiol. 1988;11(1):1-4. doi: 10.1007/BF02577014.
Forty-one routine right ventricular cineangiograms of children with ventricular septal defect (VSD) were evaluated with a digital image processing system. The purpose was to extract from the cineangiogram functional images that would provide information about pulmonary blood flow in these patients. The time delay of the contrast bolus between the main pulmonary artery and peripheral lung fields was measured and called "arrival time." By measuring the arrival time in three different points of each lung (apex, horizontal, basis), it was possible to express the mean arrival time for both lungs in a single figure. A group of patients without heart disease showed an arrival time of 1.3 +/- 0.3 seconds. In VSD with increased pulmonary blood flow from the left to right shunt, the arrival time decreased to 0.76 +/- 0.2 seconds. An increase in pulmonary vascular resistance with reduced L-R shunt led to an increased arrival time of 1.4 +/- 0.4 seconds.
利用数字图像处理系统对41例室间隔缺损（VSD）患儿的常规右心室血管造影片进行了评估。目的是从血管造影片中提取功能图像，以提供这些患者肺血流的信息。测量了对比剂团在主肺动脉和外周肺野之间的时间延迟，并称之为“到达时间”。通过在每侧肺的三个不同点（尖部、水平部、底部）测量到达时间，可以用一个数字表示两侧肺的平均到达时间。一组无心脏病患者的到达时间为1.3±0.3秒。在因左向右分流导致肺血流量增加的室间隔缺损患者中，到达时间降至0.76±0.2秒。随着左向右分流减少，肺血管阻力增加导致到达时间增加至1.4±0.4秒。
