文档介绍：Noninvasive characterization of velocity profiles and
shear rates within microcirculation system using a
novel micro-ultrasound imaging technique
1,2 3 1,2 1,2 1,2 1,2
Ming Qian , Liang Yan , Lili Niu ,Qiaofeng Jin , Wentao Yu , Hairong Zheng*
1
Paul C. Lauterbur Research Center for Biomedical Imaging, Institute of Biomedical and Health Engineering, Shenzhen Institutes
of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.
2
Key Lab for Biomedical Informatics and Health Engineering, Chinese Academy of Sciences.
3
Medical School of Jinan University Guangzhou, China
* Email: hr.******@siat.
Abstract—We have recently developed a novel contrast-based through differentiation of velocity values to obtain the local
micro echo particle imaging technique (Micro-EPIV) for non- velocity gradient. Experimentally, shear stress measurements
invasively measuring ponent flow vectors and flow- have been obtained from laser Doppler velocimetry studies [8].
induced shear stress in microscale tube flow or in vivo small Micro optical PIV has been used to examine velocity fields of
blood flows. In this study, the measuring principle and system ic, pressure driven and acoustic-driven microflows
characterization are first introduced. Then, the Micro-EPIV [9-12]. However, they all require optical access. Ultrasound-
technique is applied t