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Table 2 Recovered conductivity values of the second phantom from the reconstructed CTI images

From: Validation of conductivity tensor imaging using giant vesicle suspensions with different ion mobilities

ROI

High-frequency conductivity (\(\sigma _\text{H}\))

Extracellular volume fraction (\(\alpha\))

Extracellular diffusion coefficient (\(d_\text{e}^\text{w}\))

Intracellular diffusion coefficient (\(d_\text{i}^\text{w}\))

Scale factor conductivity (\(\eta\))

Low-frequency

\(C_{xx}\)

\(C_{yy}\)

\(C_{zz}\)

Giant vesicle suspension

\(0.92 \pm 0.05\)

\(0.56\pm 0.03\)

\(1.65\pm 0.01\)

\(0.83\pm 0.03\)

\(0.39\pm 0.05\)

\(0.46\pm 0.09\)

\(0.47\pm 0.08\)

\(0.47\pm 0.09\)

Electrolyte #3

\(0.78\pm 0.04\)

\(0.93\pm 0.02\)

\(1.97\pm 0.02\)

−

\(0.40\pm 0.02\)

\(0.59\pm 0.05\)

Electrolyte #4

\(1.01\pm 0.06\)

\(1.01\pm 0.01\)

\(2.88\pm 0.03\)

\(0.34\pm 0.03\)

\(0.78\pm 0.08\)

  1. Mean and standard deviation (SD) values of the diagonal components of the conductivity tensor \(\mathbf{C}\) and the intermediate variables including the high-frequency conductivity \(\sigma _\text{H}\), extracellular volume fraction \(\alpha\), extracellular water diffusion coefficient \(d_\text{e}^\text{w}\), intracellular water diffusion coefficient \(d_\text{i}^\text{w}\) and scale factor \(\eta\). The \(\text{mean} \pm \text{SD}\) values were computed from all pixels within each ROI