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1.前言利用声波的成像系统在无损检验、声纳、医疗诊断,地下探查及海中撮像等方面正在广泛地进行研究、研制和实用着。本文介绍声成像的现状及提高成像质量的几个问题,并叙述超声全息技术的高质量静态成像技术及3维成像技术的可能性。2.超声成像系统的现状利用声波获得图像的技术“声成像技术”,可换言为“检测载有被检物体图像信息的声波波动,由此而形成图像的技术”。因此,本章将载有成像物体(对象物)图像信息的声波以波动形式加以叙
1. INTRODUCTION The use of acoustic imaging systems is being extensively studied, developed and practiced in non-destructive testing, sonar, medical diagnostics, underground surveying and marine imaging. This article introduces the status quo of acoustic imaging and several issues to improve the imaging quality. It also describes the high-quality static imaging technology and the possibility of 3-D imaging technology of ultrasonic holography. 2. Status of Ultrasound Imaging Systems The technique of “sound imaging”, which uses sound waves to obtain images, can be referred to as “a technique of forming an image by detecting the fluctuation of sound waves carrying image information of an object to be examined.” Therefore, this chapter will be contained in the imaging object (object) image information of the wave to be described in the form of fluctuations