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一前言 M型超声心动图(又称M-T型,即Motion-Time)能反映心脏各组织界面随时间运动的情况,因而为心脏病的临床诊断提供了一个有力的工具。六十年代以后,心动图技术开始在国际上得到重视并很快地被广泛应用。但是,M型心动图上蕴含的有关心脏结构及其功能的大量信息(如各腔室的直径,阀瓣开启、关闭的速度等)往往要靠医生用尺测量。这种测量方法有很多缺点:一是不精确,二是速度慢,三是有些信息,如左心室直径随时间变化的曲线等,单靠人工是
A preface M-mode echocardiography (also known as M-T, or Motion-Time) reflects the movement of the tissue interface of the heart over time, thus providing a powerful tool for the clinical diagnosis of heart disease. After the 1960s, the cardiogram technology began to get the international attention and was quickly widely used. However, a great deal of information about the structure of the heart and its function (eg, the diameter of each chamber, the opening and closing of the valve, the speed of closure, etc.) contained in the M-cardiogram is often measured by a physician using a ruler. This measurement method has many shortcomings: First, inaccurate, and second, slow, and third, some information, such as left ventricular diameter curve over time, etc., rely on artificial