Title :
Noninvasive Characterization of Velocity Profiles and Shear Rates within Microcirculation System Using a Novel Micro-Ultrasound Imaging Technique
Author :
Qian, Ming ; Yan, Liang ; Niu, Lili ; Jin, Qiaofeng ; Yu, Wentao ; Zheng, Hairong
Author_Institution :
Inst. of Biomed. & Health Eng., Chinese Acad. of Sci., Shenzhen, China
Abstract :
We have recently developed a novel contrast-based micro echo particle imaging technique (Micro-EPIV) for non-invasively measuring multi-component flow vectors and flow-induced shear stress in microscale tube flow or in vivo small blood flows. In this study, the measuring principle and system characterization are first introduced. Then, the Micro-EPIV technique is applied to examine flows in several small tubes of different geometric shapes, and detailed velocity vector and contour distribution, and shear distribution are obtained. The results are verified by ultrasound Doppler technique and analytical solutions, and are confirmed by the results from several previous literatures.
Keywords :
biomedical ultrasonics; blood flow measurement; flow visualisation; micromechanics; pipe flow; shear flow; velocity measurement; contour distribution; contrast-based micro echo particle imaging technique; flow-induced shear stress; geometric shapes; in vivo small blood flows; microcirculation system; microscale tube flow; microultrasound imaging technique; multi-component flow vectors; shear distribution; shear rates; ultrasound Doppler technique; velocity profiles; velocity vector; Biomedical engineering; Biomedical imaging; Biomedical measurements; Biomedical optical imaging; High-resolution imaging; Optical imaging; Particle measurements; Stress measurement; Ultrasonic imaging; Ultrasonic variables measurement;
Conference_Titel :
Bioinformatics and Biomedical Engineering (iCBBE), 2010 4th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-4712-1
Electronic_ISBN :
2151-7614
DOI :
10.1109/ICBBE.2010.5517747
