A digital multigate Doppler method for high frequency ultrasound.
A digital multigate Doppler method for high frequency ultrasound.
复制标题
高频超声数字多门多普勒方法
DOI：
10.3390/s140813348
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发表时间：
2014-07-24
期刊：
影响因子：
--
通讯作者：
Zheng H
中科院分区：
文献类型：
--
作者：
Qiu W;Ye Z;Yu Y;Chen Y;Chi L;Mu P;Li G;Wang C;Xiao Y;Dai J;Sun L;Zheng H
高频多普勒超声无创血流可视化已被广泛用于评估微循环的形态和血流动力学。本文提出了一种用于高频超声的多门脉冲波多普勒方法的全数字化实现方法。通过数字解调器消除模拟混频器，与传统的b模成像共享相同的数据采集路径，使设计更加紧凑和灵活。采用基于希尔伯特变换的正交解调方案实现多门多普勒采集。提出了一个可编程的高频超声平台，以方便多通道流动的可视化。实验结果表明，该方法具有良好的性能。为了证明多门多普勒的功能，我们获得了血管内的抛物线速度梯度和不同时隙的速度分布。该方法还记录了慢壁运动。
Noninvasive visualization of blood flow with high frequency Doppler ultrasound has been extensively used to assess the morphology and hemodynamics of the microcirculation. A completely digital implementation of multigate pulsed-wave (PW) Doppler method was proposed in this paper for high frequency ultrasound applications. Analog mixer was eliminated by a digital demodulator and the same data acquisition path was shared with traditional B-mode imaging which made the design compact and flexible. Hilbert transform based quadrature demodulation scheme was employed to achieve the multigate Doppler acquisition. A programmable high frequency ultrasound platform was also proposed to facilitate the multigate flow visualization. Experimental results showed good performance of the proposed method. Parabolic velocity gradient inside the vessel and velocity profile with different time slots were acquired to demonstrate the functionality of the multigate Doppler. Slow wall motion was also recorded by the proposed method.
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影响因子：
2.5
作者：
Kulandavelu, S;Qu, DW;Adamson, SL
通讯作者：
Adamson, SL
影响因子：
0.9
作者：
Samavat H;Evans JA
通讯作者：
Evans JA
影响因子：
2.9
作者：
Foster, FS;Zhang, MY;Adamson, SL
通讯作者：
Adamson, SL
DOI：
10.1109/tuffc.2012.2344
发表时间：
2012-07-01
影响因子：
3.6
作者：
Qiu, Weibao;Yu, Yanyan;Sun, Lei
通讯作者：
Sun, Lei
影响因子：
3.5
作者：
Surry, KJM;Austin, HJB;Peters, TM
通讯作者：
Peters, TM