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Table 1 Comparison of various time-difference algorithms

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

tdEIT algorithmsAdvantagesDisadvantages
BPFast imaging speed [6]
Easy implementation [7, 24]
Smearing artifacts [9]
Low spatial resolution [7, 9]
GNFast imaging speed [3]
Easy implementation [1, 4]
Generally performs better than BP [5]
Target boundary blurred [1]
TVSharp edges preserved [12]Iteration needed [12]
Multiple parameters adjustment needed [12]
GREITUniform amplitude response [5]Training set required [5]
SCMulti-frequency information integrated
Automatic extraction of single tissue
Image noise significantly reduced
Tissues conductivity spectra required