Transactions of the Materials Research Society of Japan
Online ISSN : 2188-1650
Print ISSN : 1382-3469
ISSN-L : 1382-3469
Regular Papers
Comparison of Biometric Measurements Using Dielectric Spectroscopy and Blood Flow Meter
Y. MaruyamaK. FuruhataT. SaitoR. KitaN. ShinyashikiS. YagiharaD. Kurita
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2020 Volume 45 Issue 4 Pages 153-156


The blood flow of the living body observed by ultrasonic blood flow meter and laser blood flow meter were analyzed whether these results are also reflected in relaxation phenomena obtained from dielectric measurements by impedance analyzer. The interface polarization of red blood cells (RBCs) obtained by dielectric measurements in vivo clearly indicated that the RBC number density increased by sprint. This explanation was confirmed from comparison with the results obtained by ultrasonic blood flow meter and laser blood flow meter. As the blood vessels dilated due to sprint, the amount of blood pumped out increased and RBCs observed by dielectric measurements increased. As the blood volume increased, the mean blood flow velocity was found to be lower than that at rest. The results suggest the blood state in the living body can be obtained by dielectric spectroscopy.

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