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B超诊断仪拥有物美价廉、简单易操作和无创伤的特点,在临床诊断中获得了大规模应用,取得了很好的效果。就B超诊断仪而言,大致由显示单元、成像单元、探头及人机交互等部分组成。工作原理大致如下:医护人员利用鼠标或键盘向B超诊断仪的人机交互单元发送操作指令,接着成像单元依据人机交互单元送出的指令,对探头进行控制,依据需要定向发送超声波,接着通过对回波信号的处理,进行图像的合成。最后利用B超诊断仪的显示单元实现图像的输出。因为现在绝大多数B超诊断仪滤波功能的实现均基于模拟电路,所以笔者在本文中重点研究基于FPGA的B超诊断仪的设计方案。
B ultrasound diagnostic apparatus has the characteristics of inexpensive, easy to operate and non-invasive, obtained large-scale clinical diagnosis, and achieved good results. In terms of B-ultrasonic diagnostic apparatus, roughly by the display unit, imaging unit, the probe and human-computer interaction and other components. The working principle is roughly as follows: Medical staff use the mouse or keyboard to send operation instructions to the human-computer interaction unit of the B-ultrasonograph, and then the imaging unit controls the probe according to instructions sent by the human-computer interaction unit and sends the ultrasound according to the required orientation, Echo signal processing, the image synthesis. Finally, the use of B-diagnostic display unit to achieve the image output. Because now most of the B-scan filter filtering functions are based on analog circuits, so I focus on this article based on FPGA B-scan diagnostic design.