本系统采用具有多系列外围接口电路,A/D 转换器和图示功能的 BBC 微型计算机。对于冠状动脉直径测量,作者通过把冠状动脉造影所得到的动脉节图数字化而实现。数据获取和接口控制使用汇编语言执行,其余程序采用 BASIC 语言编写。作者采用热稀释法技术,通过分别测量心脏大静脉与冠状窦的血液温度和注入盐水或葡萄糖的温度,来确 The system uses a multi-series peripheral interface circuit, A / D converter and the graphical function of the BBC microcomputer. For coronary artery diameter measurements, the authors did this by digitizing the arterial section obtained from coronary angiography. Data acquisition and interface control using assembly language, the rest of the program written in BASIC language. The authors used the technique of thermal dilution, by measuring the blood temperature of the major venous and coronary sinus, and the temperature of the saline or glucose injected