B型超声显象在我国是一项新技术,早在50年代国外已广泛应用于临床,特别近10年来在产科方面的应用更有很大的发展。B型超声显象,由于方法简单、成象迅速、直观性强、无害性和患者无痛苦等优点,受到广大医务人员和病人的欢迎。国内近年来北京、四川、宁夏、上海等地已有报导。诊断原理B型超声形象基本原理,主要是高频脉冲回声,大致和A型相同,其不同点,是将接收到的回波讯号,经放大后加在示波管的控制栅板上,而成光点出现,这些光点构成探测器官 B-mode ultrasound imaging in our country is a new technology, as early as 50 years abroad has been widely used in clinical practice, especially in the past 10 years in the application of obstetrics more great development. B-type ultrasound imaging, due to the simple method, rapid imaging, intuitive, innocuous and patient-free, etc., by the majority of medical staff and patients welcome. In recent years in China, Beijing, Sichuan, Ningxia, Shanghai and other places have been reported. Diagnostic principle B-type ultrasound image basic principles, mainly high-frequency pulse echo, roughly the same type A, the difference is that the received echo signal amplified by adding the oscilloscope control grid, and A light spot, these light spots constitute the detector organ