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1 引 言近年来 ,超声诊断技术和仪器又有了许多新的发展 ,成为医院最常用的临床诊断设备。Ｂ超是利用人体不同组织之间 ,病理组织与正常组织之间的声学特性差异或生理结构在运动变化中的物理效应 ,经超声波扫描、探查、接受处理所得信息提供亮度调制二维断层图象 ,为医学临
1 Introduction In recent years, ultrasound diagnostic techniques and instruments have many new developments, becoming the hospital’s most commonly used clinical diagnostic equipment. B ultrasound is the use of the human body between different tissues, the difference between the pathological and normal tissue acoustic characteristics or physiological changes in the physical structure of the physical effects of ultrasonic scanning, exploration, processing the resulting information to provide brightness-modulated two-dimensional tomography , For the medical Pro