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引言超声诊断是通过向人体发射超声波脉冲、接收各组织的反射波而获取体内信息的。它具有无X线检查那样的放射危害、且不用造影剂也能对软组织进行检查的优点。其诊断装置最初为A型(波形显示),以后发展到能显示二维图象(断层像)的B型,进而自1976年左右,由于电子扫描装置实用化而迅速进展。另一方面,在不断提高断层图象质量的同时,又开发出了利用多普勒效应的无损检测血流技术。特别是最近,已能够实时捕捉,显示血流状态图象,并开始在循环领域普及。本文首先介绍超声诊断现状,进而讨论今后为提高超声诊断能力所需解决的问题。
Introduction Ultrasound diagnosis is the acquisition of in vivo information by transmitting ultrasonic pulses to the body and receiving the reflected waves from the tissues. It has the radiographic hazards of being as X-ray-free and the advantages of being able to examine soft tissue without the use of contrast media. The diagnostic device was first type A (waveform display) and later developed into a B-type capable of displaying a two-dimensional image (tomogram). Furthermore, since 1976, the electronic scanning device has rapidly progressed due to the practical use of the electronic scanning device. On the other hand, while continuously improving the quality of the tomographic images, non-destructive testing of blood flow using the Doppler effect has been developed. In particular, it has recently been possible to capture, display blood flow state images in real time and begin to become popular in the circulation field. This article first introduces the status of ultrasound diagnosis, and then discuss the future to improve the ability of ultrasound diagnosis problems to be solved.