Various parameters were described in different parts of the paper to evaluate the performance of EIT system. For the consistency of comparing the performance of different EIT systems in different places or in different times, the parameters used in the paper are listed as a reference.
Table 1: Test parameters
| Phantom system | Measurement system | Software model | |||
|---|---|---|---|---|---|
| Parameter | Value | Parameter | Value | Parameter | Value |
| Tank height | 36 cm | Frequency | 50 kHz | elements | 111 800 |
| Tank diameter | 28 cm | Saline conductivity | 0.8 S/m | Nodes | 18,084 |
| height of saline-filled tank | 30 cm | Number of frames | 10 | regularization parameter | 0.15 |
| Test object 1 | 50 ml | Delay between 2 measurements | 15 s | ROI | ¼ of max |
| Test object 2 | 100 ml (d=4.3 cm) | Drift data frame | 300 | Reconstruction | GN |
| Resistivity of the test objects | 1 MΩ/cm | Drift measurement delay | 5 minutes | model | 3D FEM (Netgen) |
| Number of electrodes | 16 | Total measurement time | 2 hours | ||
The electrodes are gold plated with a diameter of 2.8 mm and a length of 24 mm.
Table 2: Some devices used for measuring phantom conductivity
| conductivity meter |
ECTestr (Oakton Instruments, USA) |
| Measurement of Resistivity of test objects |
Precision LCR Meter LCR-821 (GW Instek, Korea) |
| Position controller | LEGO™ NXT Mindstorms |
Last Modified: $Date: 2017-02-28 13:12:08 -0500 (Tue, 28 Feb 2017) $ by $Author: aadler $