TY - JOUR
T1 - The effect of kinetic properties on statistical variations of ultrasound signals backscattered from flowing blood
AU - Huang, Chih Chung
AU - Lin, Yi Hsun
AU - Wang, Shyh Hau
PY - 2009/2
Y1 - 2009/2
N2 - Yet very little is known about the effect of "black hole" (BH) phenomenon on backscattering signal statistics under the laminar flow. To further explore this issue, measurements were performed from the porcine blood (with hematocrits of 20 and 50%) circulating in a mock flow loop under various steady flows at velocities ranged from 15 to 122 mm/s using a 10 MHz ultrasonic transducer. Results showed that the BH was apparent for the 50% blood flowing at a low velocity. The BH tended to be decreased with the increase of flow velocity and that it was hardly observed from the 20% blood. The probability density function of signals backscattered from blood tended to distribute as pre- Rayleigh statistics and the Nakagami parameter was less than 1. The spatial distribution of red cell aggregation in the flow tube is a predominant factor leading to statistical variations of ultrasonic backscattering in the flowing blood,
AB - Yet very little is known about the effect of "black hole" (BH) phenomenon on backscattering signal statistics under the laminar flow. To further explore this issue, measurements were performed from the porcine blood (with hematocrits of 20 and 50%) circulating in a mock flow loop under various steady flows at velocities ranged from 15 to 122 mm/s using a 10 MHz ultrasonic transducer. Results showed that the BH was apparent for the 50% blood flowing at a low velocity. The BH tended to be decreased with the increase of flow velocity and that it was hardly observed from the 20% blood. The probability density function of signals backscattered from blood tended to distribute as pre- Rayleigh statistics and the Nakagami parameter was less than 1. The spatial distribution of red cell aggregation in the flow tube is a predominant factor leading to statistical variations of ultrasonic backscattering in the flowing blood,
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U2 - 10.1143/JJAP.48.027002
DO - 10.1143/JJAP.48.027002
M3 - Article
AN - SCOPUS:60849113437
SN - 0021-4922
VL - 48
JO - Japanese journal of applied physics
JF - Japanese journal of applied physics
IS - 2
M1 - 027002
ER -