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标准 M 型超声心动图的应用,尤其与实时心脏切面显象联合应用,作为无损伤性检测技术,对于心脏病的临床诊断和研究起着十分重要的辅助作用。但超声心动图本身存在着局限性,它往往不能提供有关血流这样重要的信息。也许,超声心动图上某些现象间接反映异常血流的存在(如从二尖瓣前叶的舒张期振动能够推断主动脉瓣反流),但不少普通疾病如风湿性
The application of standard M-mode echocardiography, especially in combination with real-time cardiac section imaging, plays an important role in the clinical diagnosis and research of heart disease as a non-invasive detection technique. Echocardiography, however, has its own limitations and often does not provide such vital information about blood flow. Perhaps, some phenomena on echocardiography indirectly reflect the presence of abnormal blood flow (eg, diastolic vibration from the anterior mitral valve can infer aortic regurgitation), but many common diseases such as rheumatoid