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常规医用显像所采用的超声技术来源于一些基本的科学发现，例如信号分析和图像处理，换能器材料和制作工艺的发展及数字电子技术应用等。图像系统设计人员的构思是受到一系列因素牵制的，它们包括人体各器官组织的超声特性，尤其是声速和声衰减方面的特性；这些特性决定了超声频率、空间对比和时间分辨率。超声多普勒技术可提供血流量等有关移动目标的信息，配用实时显像装置就能展现人体解剖结构和血流量的二维图像。其它的进展有弹性显像、电脑化层析成像法和三维成像等。现代超声诊断技术看来是安全的，但应继续着重研究和探索超声热效应和空化作用给人体可能带来的危害。
Ultrasound techniques used in conventional medical imaging derive from basic scientific discoveries such as signal analysis and image processing, development of transducer materials and fabrication processes, and applications of digital electronics. The vision of the imaging system designer is governed by a number of factors that include the ultrasound characteristics of various tissues and organs in the body, especially the characteristics of sound velocity and sound attenuation; these characteristics determine the ultrasound frequency, spatial contrast, and temporal resolution. Ultrasound Doppler technology can provide blood flow and other information about moving targets, equipped with real-time imaging device can show the human anatomy and blood flow of two-dimensional images. Other advances include elastic imaging, computerized tomography and three-dimensional imaging. Modern ultrasound diagnostic techniques appear to be safe, but emphasis should continue to be placed on researching and exploring the possible harm to humans from the effects of ultrasound and cavitation.