The results of computer simulation and fpga simulation indicate that the technique is feasible and the experiment's results show that the performance of the system is excellent . in this paper, it summarize the basic principles of the if ( intermediate frequency ) digitization technology and detail the design and fpga realization of the digital if receiver system 在具体实现中,提出了一种基于多相滤波结构来进行抽取滤波的中频接收机方案,通过计算机仿真,证明了它的可行性,并围绕此方案完成了数字下变频硬件系统的设计和调试工作。
After increased the image digitization technology, the post-processing technology, the blood oxygen analysis technology and the ultrasonic analysis, enhanced the diagnosis coincidence rate to the breast block's position and size, benign or malignant, pouch or solid, specially the blood oxygen analysis function reflects the organization metabolism condition, remarkably raised the diagnostic analysis level 该机增加了影像数字化技术、后处理技术、血氧分析技术及超声分析后,对乳房内肿块的位置大小,良、恶性,囊实性,提高了诊断符合率,特别是血氧分析功能在一定程度上反应了组织代谢状态,显著提高了诊断分析水平。