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Table 2 Conductivity spectra used for numerical validation and phantom experiment

From: A novel time-difference electrical impedance tomography algorithm using multi-frequency information

Frequency

Numerical validation (S/m)

Phantom experiment (S/m)

Normal brain

Ischemia brain

Pomelo

Cucumber

\(\omega_{1}\)

0.151

0.115

0.083

0.047

\(\omega_{2}\)

0.155

0.120

0.105

0.065

\(\omega_{3}\)

0.175

0.130

0.129

0.093

  1. \(\omega_{1}\)–\(\omega_{3}\) are in the range of 10 Hz–100 kHz