Blood Impedance Characterization from Pulsatile Measurements

Abstract

This paper describes an in vivo measurement

A comparative study of PCA, SIMCA and Cole model for classification of bioimpedance spectroscopy measurements

“…Considering these parameters we conclude that geometry change has altered the parameters R 0 and R 1 , but it did not affect α and F c . This findings is consistent with the fact that the latter two parameters are known to characterize the tissue type and the former two are describing the geometry and fluid movement in a BIS measurement [4]. However, these parameters only represent the prototype spectra of two classes.…”

“…Singlefrequency and multi-frequency bioimpedance have been measured and modeled in many research applications to explain how different sources of variation affect the response of a living tissue [1,2]. These applications have been diverse including impedance plethysmography and pulsatile blood flow [3,4], assessment of human body composition [5], hydration detection, characterization of fluid accumulation [6,7] and detection of electrical anomalies in neuromuscular diseases [8].…”

Quick, Single-Frequency Dielectric Characterization of Blood Samples of Pediatric Cancer Patients by a Cylindrical Capacitor: Pilot Study

“…The dielectric properties of blood can be extracted from the measured impedance data. These studies usually involve measuring impedance at multiple frequencies [4,7] and have been used to monitor the short term behavior of blood (e.g., coagulation [2]) or its long term properties (e.g., glucose content [6] or viscosity [4]). A triple frequency measurement method was proposed by Zhao et al to collect resistivity and capacitance data from the blood simultaneously [3]; however, as will be shown in this study, when only permittivity evaluation is intended, a single frequency measurement would suffice.…”

Wide bandwidth impedance meter using low rate random sampling

“…Wide frequency range impedance measurement is useful in several application including non-invasive blood impedance measurements [1], electro-impedance spectroscopy [2] and electronic device characterization as well as wide band speaker or transducers impedance measurements for audio or ultrasound applications [3]. These kind of measures require systems capable of a wide frequency range span, typically from a few Hz up to 10MHz or more, maintaining a certified degree of accuracy.…”