Conference Paper

Textile Electrode Straps for Wrist-to-Ankle Bioimpedance Measurements for Body Composition Analysis. Initial Validation & Experimental Results

Department of Signals & Systems at Chalmers University of Technology and with School of Engineering at the University of Borås, 501 90 SWEDEN.
DOI: 10.1109/IEMBS.2010.5627305 Conference: Annual International Conference of the IEEE Engineering in Medicine and Biology Society.
Source: PubMed


Electrical Bioimpedance (EBI) is one of the non-invasive monitoring technologies that could benefit from the emerging textile based measurement systems. If reliable and reproducible EBI measurements could be done with textile electrodes, that would facilitate the utilization of EBI-based personalized healthcare monitoring applications. In this work the performance of a custom-made dry-textile electrode prototype is tested. Four-electrodes ankle-to-wrist EBI measurements have been taken on healthy subjects with the Impedimed spectrometer SFB7 in the frequency range 5 kHz to 1 MHz. The EBI spectroscopy measurements taken with dry electrodes were analyzed via the Cole and Body Composition Analysis (BCA) parameters, which were compared with EBI measurements obtained with standard electrolytic electrodes. The analysis of the obtained results indicate that even when dry textile electrodes may be used for EBI spectroscopy measurements, the measurements present remarkable differences that influence in the Cole parameter estimation process and in the final production of the BCA parameters. These initial results indicate that more research work must be done to in order to obtain a textile-based electrode that ensures reliable and reproducible EBI spectroscopy measurements.

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Available from: Juan Carlos Marquezruiz, Jul 08, 2014
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    • "This last factor, the acceptance, is especially critical due to the characteristics of health services: privacy, safety, reliability, and intention of use. Also, an important amount of researchers involved in technologies for physiological measurements and personalized healthcare monitoring focuses their efforts on developing sensors based on smart textile materials [17] [18] [19] [20]. Smart textiles offer benefits related to the intuitiveness ensured by the use of known interaction and accepted elements by all human beings. "
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    Journal of Sensors 01/2015; 2015. DOI:10.1155/2015/898047 · 1.18 Impact Factor
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    • "The tests showed that textile electrodes are less susceptible to broadband noise, but produce significantly more noise in the band of 0.05–0.67 Hz. Marquez et al (2010) used textile dry electrodes to measure body composition analysis. The inner surface of the electrodes was based on synthetic wrap knitted textile material with silver fiber. "
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    Physiological Measurement 08/2013; 34(9):R47-R69. DOI:10.1088/0967-3334/34/9/R47 · 1.81 Impact Factor
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    ABSTRACT: Advances on System-On-Chip and Textile technology allows the development of Textile-enabled measurement instrumentation. Textile Electrodes (Textrodes) have been proven reliable for performing Electrical Bioimpedance Spectroscopy (EBIS) measurements, and the availability of a integrated circuit impedance spectrometer, the AD5933, has allowed the implementation of small size EBIS spectrometers. In this work an AD5933-based spectrometer has been implemented, and its performance on 2R1C circuits and for tetrapolar total right side EBIS measurements has been compared against the commercially available spectrometer SFB7. The study has been focused on the working upper frequency range and the estimation of the Cole parameters required for assessment of body fluid distribution: R(0) and R(∞). The results indicate that AD5933-based spectrometer implemented in this work can perform accurate impedance measurements well above the upper limits recommended in the datasheet. The AD5933-EBIS presents a good performance compared with the SFB7 on the 2R1C circuit and the total right side measurements, showing a smaller error in the resistance spectrum and small deviation error in the reactance when measuring over 270 kHz. The comparison on the Cole parameters estimation obtained with the SFB7 and the AD5933-based spectrometer exhibit a difference below 1% for the estimation of R(0) and R(∞). Consequently the overall measurement performance shown by the implemented AD5933-based spectrometer suggests its feasible use for EBIS measurements using dry Textrodes. This is of special relevance for the proliferation of EBI-based personalized health monitoring systems for patients that require to monitor the distribution of body fluids, like in dialysis.
    Annual International Conference of the IEEE Engineering in Medicine and Biology Society 2011, Boston; 09/2011
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