IEEE Trans Ultrason Ferroelectr Freq Control. 2017 Nov;64(11):1776-1781. doi: 10.1109/TUFFC.2017.2748387. Epub 2017 Sep 1.
Ultrafast plane wave microvessel imaging significantly improves ultrasound Doppler sensitivity by increasing the number of Doppler ensembles that can be collected within a short period of time. The rich spatiotemporal plane wave data also enable more robust clutter filtering based on singular value decomposition. However, due to the lack of transmit focusing, plane wave microvessel imaging is very susceptible to noise. This paper was designed to: 1) study the relationship between ultrasound system noise (primarily time gain compensation induced) and microvessel blood flow signal and 2) propose an adaptive and computationally cost-effective noise equalization method that is independent of hardware or software imaging settings to improve microvessel image quality.
超快速平面波微血管成像通过在短时间内收集更多的多普勒集合来显著提高超声多普勒灵敏度。丰富的时空平面波数据还可以基于奇异值分解进行更强大的杂波滤波。然而，由于缺少发射聚焦，平面波微血管成像非常容易受到噪声的影响。本文旨在：1）研究超声系统噪声（主要是时增益补偿引起的）与微血管血流信号之间的关系，以及 2）提出一种自适应且计算成本效益高的噪声均衡方法，该方法不依赖于硬件或软件成像设置，以改善微血管图像质量。
