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1.前言 M型超声心动图对左心室功能的无创性检测有独到之处。然而,许多超声心动图的测量和计算毕竟是相当困难和费时的。加之许多因素受心率和呼吸的影响,故需逐次地对心动图进行测量。若能持继地测量和分析整个心动周期,则超声图上的大量信息将可加以利用。实现超声心动图的自动化测量有两种不同的方法:一是全自动法,二是半自动法。自动化系统的缺点是需要专用的计算机硬设备,如高速模-数转换器和大容量存贮器;以及专门的技术设备如数字滤波,自动扫描设备或电视摄相机等。半自动系统只需不太
1. Introduction M-mode echocardiography of noninvasive detection of left ventricular function is unique. However, many echocardiographic measurements and calculations are, after all, quite difficult and time-consuming. In addition, many factors are affected by heart rate and respiration, it is necessary to measure the heartbeat. If you continue to measure and analyze the entire cardiac cycle, a large amount of information on the ultrasound map will be available. There are two different ways to automate the measurement of echocardiography: one is fully automated and the other is semi-automatic. The disadvantages of automation systems are the need for specialized computer hardware such as high speed analog-digital converters and mass storage; and specialized technical equipment such as digital filtering, automatic scanning equipment or television cameras. Semi-automatic system just not too