Study into the repeatability of the electrode-skin interface utilizing electrodes commonly used in Electrical Impedance Tomography

Wang, W; Wang, L.; Qiao, Guofeng; Prickett, P.; Bramer, B.; Tunstall, B.; Al-Akaidi, Marwan

doi:10.1007/978-3-540-73841-1_88

Cited by 4 publications

(4 citation statements)

References 6 publications

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“…The image that is constructed using this large number of measurement combinations could mean this system should have the ability to make clearer images. [6,27]. The Sussex EIT device achieves its measurement combinations for the planar electrode plate by using a hexagon structure based on a 4-electrode method.…”

Section: Evaluation Of E-phantommentioning

confidence: 99%

A 3D multi-frequency response electrical mesh phantom for validation of the planar structure EIT system performance

Zarafshani

Qureshi

Bach

et al. 2016

2016 IEEE International Conference on Electro Information Technology (EIT)

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Abstract-Assessment and validation of the Electrical Impedance Tomography (EIT) system performance and calibration of systematic errors in the electrical field generated inside of the interrogated volume is an important requirement. System instabilities can be caused by the EIT design and must be characterized before and during the clinical trials. Evaluation of the Sussex EIT system used in the clinical study can be based on a realistic electronic phantom. We designed a mesh phantom based on the electrode configuration and mesh structures of the image reconstruction. The phantom has the capability of modelling the cellular electrical properties that are operative within a circular homogeneous medium. The design is optimized to assess the planar topology of the internal impedance distribution. The system employs the information from the electrical properties of biological tissues to evaluate the Cole-Cole dispersion data. This mesh phantom is capable of producing localized conductivity perturbations between each arbitrary channel in the electrode placement planar phantom topology by measuring all 1416 combinations that are to be used in the image reconstruction. The phantom is especially designed for the Sussex EIT system to validate system performance of measurements consisting of SNR, and modelling system accuracy.

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Section: Evaluation Of E-phantommentioning

confidence: 99%

A 3D multi-frequency response electrical mesh phantom for validation of the planar structure EIT system performance

Zarafshani

Qureshi

Bach

et al. 2016

2016 IEEE International Conference on Electro Information Technology (EIT)

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“…The term 'wet' electrode, first coined in [8] denotes the constant existence of an intermediary contact medium, e.g. saline, between the electrode and the patient.…”

Section: The Mk4 'Wet' Electrode Interfacementioning

confidence: 99%

“…We are concluding that, as agar phantoms are more solid than human skin, the agar would not enter the electrode cavity. Moreover, the 'wet' electrode testing in [8] was performed using the arm of a healthy male subject, again a more solid material. …”

Section: Loss Of Contactmentioning

confidence: 99%

“…Wang et al [8] showed that a system whereby direct contact of the electrodes with the skin is avoided can result in significantly reduced artifacts, and also assist in the repeatability of EIT testing. The current paper presents further investigation into the use of this contactless interface, especially when applied to in-vivo studies of the human breast utilizing a planar array of electrodes.…”

Section: Introductionmentioning

confidence: 99%

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Further investigation of a contactless patient-electrode interface of an Electrical Impedance Mammography system

Huber¹,

Béqo²,

Adams³

et al. 2010

J. Phys.: Conf. Ser.

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Abstract. The Sussex Mk4 Electrical Impedance Mammography (EIM) system is a novel instrument, designed for the detection of early breast cancer, based upon Electrical Impedance Tomography (EIT). Many innovations in the field have been incorporated in the design improving both signal distribution and response. This paper investigates the behaviour of the contactless patient-electrode interface. The interface was studied in detail using phantom and healthy volunteer, in-vivo, data. Our findings show the necessity for the careful design of electrode enclosure so that the response of the system is not affected by the unpredictable positioning of the breast; it closely mimics those conditions seen when using the phantom. The paper includes a number of possible designs and their individual characteristics. In addition an explanation on the unanticipated effects and solutions for such are described.

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Analysis and Approach to Reduce Electrode Contact Artifacts in EIM

Bilal

Wang

Young

2011

2011 UKSim 5th European Symposium on Computer Modeling and Simulation

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Study into the repeatability of the electrode-skin interface utilizing electrodes commonly used in Electrical Impedance Tomography

Cited by 4 publications

References 6 publications

A 3D multi-frequency response electrical mesh phantom for validation of the planar structure EIT system performance

A 3D multi-frequency response electrical mesh phantom for validation of the planar structure EIT system performance

Further investigation of a contactless patient-electrode interface of an Electrical Impedance Mammography system

Analysis and Approach to Reduce Electrode Contact Artifacts in EIM

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