Title :
Hematocrit measurement by dielectric spectroscopy
Author :
Treo, E.F. ; Cervantes, D.O. ; Felice, C.J. ; Tirado, M. ; Valentinuzzi, M.E.
Author_Institution :
Departamento de Bioingenieria, Univ. Nacional de Tucuman, Argentina
Abstract :
A new method to measure hematocrit (HTC) in extra-corporeal blood systems is presented based on permittivity changes. Human blood samples were tested at different hematocrit levels pairing the values of permittivity (obtained with a commercial impedance analyzer) with the traditional centrifugation results. The comparison yielded a high correlation (R=0.98) while theoretical simplifications suggest that the method is independent of possible changes in the conductivities of the intra- and extra-cellular compartments.
Keywords :
artificial organs; bioelectric phenomena; biomedical measurement; blood; cellular biophysics; permittivity measurement; spectroscopy; commercial impedance analyzer; extracellular compartment; extracorporeal blood systems; healthy voluntary donors; human blood samples; intracellular compartment; permittivity changes; traditional centrifugation results; Biomembranes; Blood; Cells (biology); Conductivity; Dielectric measurements; Electrochemical impedance spectroscopy; Frequency; Humans; Impedance measurement; Permittivity measurement;
Conference_Titel :
Engineering in Medicine and Biology, 2002. 24th Annual Conference and the Annual Fall Meeting of the Biomedical Engineering Society EMBS/BMES Conference, 2002. Proceedings of the Second Joint
Print_ISBN :
0-7803-7612-9
DOI :
10.1109/IEMBS.2002.1106634
