医学超声内窥镜下的脉冲多普勒血流检测  

Pulsed doppler measurement in medical ultrasonic endoscope imaging system

作　　者：鲍静[1] 陈晓冬[1] 温世杰[1] 郁道银[1] 

机构地区：[1]天津大学精密仪器与光电子工程学院光电信息技术科学教育部重点实验室,天津300072

出　　处：《现代仪器》2007年第5期21-23,34,共4页Modern Instruments

摘　　要：多普勒超声技术在医学超声成像系统中的应用进一步扩大超声诊断的范围。本文提出一种在超声内窥镜成像系统中用于血流参数定量分析脉冲多普勒信号处理方案,经过编码激励与脉冲压缩、正交解调、低通滤波、FFT等最终显示血流速度频谱图。文中给出电路和仿真结果,输出结果正确,已可以实现对多普勒频率的测量。Ultrasonic Doppler in Medical Ultrasound imaging system enriches the application of Ultrasonic diagnosis. We put forward a scheme for pulse Doppler signal disposal to quantitatively analyze the hemodynamic parameters in Medical Ultrasonic Endoscope imaging system. It displayed the frequency distributed chart via coded excitation, pulse compres- sion, quadrature demodulation, LPF, 90° phase shift and FFT disposal. The output of simulation and the circuits were reported in the article, and the results met our expectation and realized the measurement of Doppler speed.

关 键 词：多普勒超声 脉冲多普勒 血流参数 FPGA 

分 类 号：TN958.2[电子电信—信号与信息处理]