临床超声心动图——概述。

Can Med Assoc J. 1976 Jan 10;114(1):46-7, 50-4.

Echocardiography is a new diagnostic technique for noninvasive assessment of the size, structure and function of the heart, using pulsed ultrasound. The physical principles underlying the generation of the ultrasonic signal for diagnostic use and the three modes (A, B and M) of displaying the reflected "echo" signal are briefly discussed. A full echographic study of the heart includes evaluation of the dimensions and patterns of movement of its various structures and chambers. The normal anatomic relations and echographic appearances of these structures and the changes they undergo in some of the more commonly recognized clinical conditions are described. Assessment of output and contractile behaviour of the left ventricle and recognition of various congenital heart defects are two of the more recent applications of this technique. Two-dimensional sector and multiscanning devices permit several areas of the heart to be visualized simultaneously in "real time".

超声心动图是一种利用脉冲超声对心脏大小、结构和功能进行无创评估的新诊断技术。简要讨论了用于诊断的超声信号产生的物理原理以及显示反射“回声”信号的三种模式（A、B和M）。对心脏进行全面的超声检查包括评估其各种结构和腔室的尺寸及运动模式。描述了这些结构的正常解剖关系和超声表现，以及它们在一些较常见临床病症中所发生的变化。评估左心室的输出量和收缩行为以及识别各种先天性心脏缺陷是该技术最近的两项应用。二维扇形和多扫描设备可使心脏的多个区域在“实时”中同时可视化。