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Fig.6

Statistic parameters_
| Parameter | R | X |
|---|---|---|
| Max. Mean difference | 7.86% | 3.98% |
| MSE | 0.010 | 0.004 |
| RMSE | 0.12 | 0.06 |
| MAE | 0.11 | 0.06 |
| MAEP | 0.04 | 0.04 |
| Square difference | 21.04 | 11.49 |
Experimental results_
| Frequency | 20 Hz | 10 kHz | 50 kHz | 100 kHz | 200 kHz | 500 kHz | 1 MHz | 1.5 MHz | 20 MHz |
|---|---|---|---|---|---|---|---|---|---|
| Homogenous phantom, GΩ | |||||||||
| R | 7.982 | 4.844 | 3.865 | 3.439 | 3.040 | 2.548 | 2.198 | 1.986 | 1.831 |
| X | −8.091 | −5.877 | −5.207 | −4.912 | −4.616 | −4.224 | −3.927 | −3.755 | −3.634 |
| Heterogenous phantom, GΩ | |||||||||
| R | 8.060 | 4.843 | 4.049 | 3.657 | 3.242 | 2.682 | 2.275 | 2.059 | 1.887 |
| X | −7.768 | −5.917 | −5.257 | −4.967 | −4.673 | −4.281 | −3.984 | −3.810 | −3.689 |
| Differences, GΩ | |||||||||
| R | 0.078 | 0.001 | 0.185 | 0.218 | 0.202 | 0.138 | 0.077 | 0.073 | 0.055 |
| X | 0.322 | 0.040 | 0.049 | 0.055 | 0.057 | 0.058 | 0.057 | 0.055 | 0.055 |