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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 integratedAutomatic extraction of single tissueImage noise significantly reducedTissues conductivity spectra required