介绍了一种新型的基于微机PCI总线的线阵B超诊断系统,并论述了D/4方式、PCI总线接口方式和系统各模块的功能.该系统利用微机丰富的软硬件资源,以较低的系统价格,获得了目前高档B超诊断仪的图象质量,并提供比一般低档B超诊断仪强大得多的功能,足以满足普通用户的需求.同时该系统可实现许多在传统B超诊断仪上难以实现的功能(如电影回放,超声图象的存储、处理、传输,字符叠加,远程诊断等).该系统最大的特点是采用PCI总线将B超图象实时送入PC微机并采用PC微机的终端作为图象显示器,同时采用了D/4方式以提

This paper introduces a new type of B-ultrasonic system based on PCI bus. Using the ample software and hardware resource of personal computer, this system achieves as good image quality as top grade B-ultrasonic diagnosis systems, and offers stronger functions than general low-end ones with comparatively cheap price. Its performance can sufficiently meet common needs of ordinary users. This system can accomplish functions that traditoional B-ultrasonic diagnosis equipment can't do, such as multiframe image replaying, storage, processing and transmission of ultrasonic images, superposition of characters and remote diagnosis, etc. The unique featrue of this system is that it uses PCI bus to import the B-ultrasonic image into the personal computer in real time and utilize the computer terminal to display the image. The scan mode used by this system is D/4. This paper discusses the D/4 scan mode, the PCI interface mode, and the functions of the system modules.