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液面法超声全息显像技术,以它能实时、动态地显示生物体软组织和材料内部缺陷的特点,得到了人们的广泛重视。作为声源的换能器,又是整个装置的重要部件。随着科学技术的发展,又需解决观察和研究宏观组织内部的细微结构。采用压电陶瓷材料作为超声换能器,它的分辨率和可见视野都受了很大的限制,应用石英晶体材料作为换能器,在超声全息显像研究中,能得到高分辨率、大视野的图像。
Liquid surface method ultrasound holographic imaging technology, with its real-time, dynamic display of biological soft tissue and material defects within the characteristics of people has received widespread attention. As a transducer of the sound source, it is an important part of the whole device. With the development of science and technology, it is also necessary to solve the problem of observing and studying the subtle structure within a macroscopic organization. The use of piezoelectric ceramic material as the ultrasonic transducer, its resolution and visual field are subject to a lot of restrictions, the application of quartz crystal material as a transducer in the study of ultrasound holographic imaging, can get high resolution, large Field of vision image.