Table 1 Comparison of various time-difference algorithms
From: A novel time-difference electrical impedance tomography algorithm using multi-frequency information
| tdEIT algorithms | Advantages | Disadvantages |
|---|---|---|
| BP | Fast imaging speed [6] Easy implementation [7, 24] | Smearing artifacts [9] Low spatial resolution [7, 9] |
| GN | Fast imaging speed [3] Easy implementation [1, 4] Generally performs better than BP [5] | Target boundary blurred [1] |
| TV | Sharp edges preserved [12] | Iteration needed [12] Multiple parameters adjustment needed [12] |
| GREIT | Uniform amplitude response [5] | Training set required [5] |
| SC | Multi-frequency information integrated Automatic extraction of single tissue Image noise significantly reduced | Tissues conductivity spectra required |