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Medical & Biological Engineering & Computing

, Volume 52, Issue 9, pp 749–758 | Cite as

Extracting the parameters of the double-dispersion Cole bioimpedance model from magnitude response measurements

  • Todd J. FreebornEmail author
  • Brent Maundy
  • Ahmed S. Elwakil
Original Article

Abstract

In the field of bioimpedance measurements, the Cole impedance model is widely used for characterizing biological tissues and biochemical materials. In this work, a nonlinear least squares fitting is applied to extract the double-dispersion Cole impedance parameters from simulated magnitude response datasets without requiring the direct impedance data or phase information. The technique is applied to extract the impedance parameters from MATLAB simulated noisy magnitude datasets showing less than 1.2 % relative error when 60 dB SNR Gaussian white noise is present. This extraction is verified experimentally using apples as the Cole impedances showing less than 3 % relative error between simulated responses (using the extracted impedance parameters) and the experimental results over the entire dataset.

Keywords

Bioimpedance Cole impedance model Magnitude/modulus retrieval 

Notes

Acknowledgments

Todd Freeborn would like to acknowledge Canada’s National Sciences and Engineering Research Council (NSERC), Alberta Innovates—Technology Futures, and Alberta Advanced Education & Technology for their financial support of this research through their graduate student scholarships.

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Copyright information

© International Federation for Medical and Biological Engineering 2014

Authors and Affiliations

  • Todd J. Freeborn
    • 1
    Email author
  • Brent Maundy
    • 1
  • Ahmed S. Elwakil
    • 2
  1. 1.Department of Electrical and Computer EngineeringUniversity of CalgaryCalgaryCanada
  2. 2.Department of Electrical and Computer EngineeringUniversity of SharjahSharjahUnited Arab Emirates

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