Evaluation of measurement and stimulation patterns in open electrical impedance tomography with scanning electrode

Medical & Biological Engineering & Computing
Jinzhen LiuGang Li

Abstract

The reconstruction quality in electrical impedance tomography is limited by the current injection amplitude, the injection and measurement patterns, and the measurement accuracy as well as the number and placement of electrodes. This paper dedicates to increase the number of independent voltage measurements by scanning electrode (SE), and design an optimal measurement and stimulation pattern for open electrical impedance tomography (OEIT). Firstly, several measurement patterns are, performed in OEIT, aiming to evaluate the right number of the measurement points for the imaged target in a certain depth. The results indicate that the image quality gets higher with the number of measurement point increased to some extent. Thus, it can guide the optimum design for the electrode system in OEIT. Secondly, through the numerical calculation and salt water tank experiment, in contrast to adjacent current injection pattern, cross-current-injection pattern achieves better reconstruction with higher imaging quality and penetration depth, and is more robust against data noise in deep domain. Lastly, the experiments also indicate that the electrode contact area affects the reconstruction quality and investigation depth. Therefore, OEIT with ...Continue Reading

References

Dec 3, 1999·IEEE Transactions on Bio-medical Engineering·J L MuellerJ C Newell
Mar 6, 2002·Physiological Measurement·Mengxing TangXiuzhen Dong
Jan 7, 2010·IEEE Transactions on Medical Imaging·Andrea BorsicWilliam R B Lionheart
Jun 8, 2011·Physiological Measurement·Andy AdlerYasheng Maimaitijiang
Apr 26, 2012·Physiological Measurement·Andy AdlerGerhard K Wolf

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Citations

Jan 24, 2017·IEEE Transactions on Medical Imaging·Ethan K MurphyRyan J Halter
Dec 12, 2017·International Journal of Biomedical Imaging·Abdalla SalamaRajprasad Rajkumar

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