Med Biol Eng Comput - Extracting the parameters of the double-dispersion Cole bioimpedance model from magnitude response measurements.

Tópicos

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Resumo

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.

Resumo Limpo

field bioimped measur cole imped model wide use character biolog tissu biochem materi work nonlinear least squar fit appli extract doubledispers cole imped paramet simul magnitud respons dataset without requir direct imped data phase inform techniqu appli extract imped paramet matlab simul noisi magnitud dataset show less relat error db snr gaussian white nois present extract verifi experiment use appl cole imped show less relat error simul respons use extract imped paramet experiment result entir dataset

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