Remember Me
Or use your Academic/Social account:


Or use your Academic/Social account:


You have just completed your registration at OpenAire.

Before you can login to the site, you will need to activate your account. An e-mail will be sent to you with the proper instructions.


Please note that this site is currently undergoing Beta testing.
Any new content you create is not guaranteed to be present to the final version of the site upon release.

Thank you for your patience,
OpenAire Dev Team.

Close This Message


Verify Password:
Verify E-mail:
*All Fields Are Required.
Please Verify You Are Human:
fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Zarafshani, A; Qureshi, T; Bach, T; Chatwin, C R; Soleimani, M (2016)
Languages: English
Types: Other
Subjects: R856, QC0522
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.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • [1] D. S. Holder, Electrical Impedance Tomography: Methods, History and Applications. Bristol: Institute of Physics Publishing, 2005.
    • [2] B. Brown, "Electrical impedance tomography (EIT): a review," J. Med. Eng. Technol., vol. 27, pp. 97-108, 2003.
    • [3] Y. Zou and Z. Guo, "A review of electrical impedance techniques for breast cancer detection," Med. Eng. Phys., vol. 25, pp. 79-90, 2003.
    • [4] A. Zarafshani, N. Huber, N. Béqo, B. Tunstall, G. Sze, C. Chatwin and W. Wang, "A flexible low-cost, high-precision, single interface electrical impedance tomography system for breast cancer detection using FPGA," in Journal of Physics: Conference Series, 2010, pp. 012169.
    • [5] A. Zarafshani, T. Bach, W. Wang and C. Chatwin, "Conditioning a current source using OCCII-GIC for EIT systems," 2014.
    • [6] G. Sze, "Detection of breast cancer with electrical impedance mammography, Ph.D. dissertation," 2012.
    • [7] Xiaolin Zhang, Wei Wang, G. Sze, D. Barber and C. Chatwin, "An Image Reconstruction Algorithm for 3-D Electrical Impedance Mammography," Medical Imaging, IEEE Transactions On, vol. 33, pp. 2223-2241, 2014.
    • [8] G Sze, W Wang, D C Barber and N Huber, "Preliminary study of the sensitivity of the sussex Mk4 electrical impedance mammography planar electrode system," in Bath, UK, 2011.
    • [9] T. K. Bera and J. Nagaraju, "A MATLAB-based boundary data simulator for studying the resistivity reconstruction using neighbouring current pattern," Journal of Medical Engineering, vol. 2013, 2013.
    • [10] H. Gagnon, A. E. Hartinger, A. Adler and R. Guardo, "A phantom for assessing the performance of EIT systems," in EIT Conf. 2008 (Dartmouth, NH, USA), 2008.
    • [11] G. Hahn, A. Just, J. Dittmar and G. Hellige, "Systematic errors of EIT systems determined by easily-scalable resistive phantoms," Physiol. Meas., vol. 29, pp. S163, 2008.
    • [12] H. Gagnon, M. Cousineau, A. Adler and A. E. Hartinger, "A resistive mesh phantom for assessing the performance of EIT systems," Biomedical Engineering, IEEE Transactions On, vol. 57, pp. 2257-2266, 2010.
    • [13] T. K. Bera and J. Nagaraju, "A chicken tissue phantom for studying an electrical impedance tomography (EIT) system suitable for clinical imaging," Sensing and Imaging: An International Journal, vol. 12, pp. 95-116, 2011.
    • [14] G. Qiao, W. Wang, L. Wang, Y. He, B. Bramer and M. Al-Akaidi, "Investigation of biological phantom for 2D and 3D breast EIT images," in 13th International Conference on Electrical Bioimpedance and the 8th Conference on Electrical Impedance Tomography, 2007, pp. 328-331.
    • [15] T. K. Bera, "Bioelectrical Impedance Methods for Noninvasive Health Monitoring: A Review," Journal of Medical Engineering, vol. 2014, 2014.
    • [16] T. Kao, G. J. Saulnier, D. Isaacson, T. L. Szabo and J. C. Newell, "A versatile high-permittivity phantom for EIT," Biomedical Engineering, IEEE Transactions On, vol. 55, pp. 2601-2607, 2008.
    • [17] H. Griffiths, "A Cole phantom for EIT," Physiol. Meas., vol. 16, pp. A29, 1995.
    • [18] L. Fabrizi, A. McEwan, T. Oh, E. Woo and D. Holder, "A comparison of two EIT systems suitable for imaging impedance changes in epilepsy," Physiol. Meas., vol. 30, pp. S103, 2009.
    • [19] A. E. Hartinger, H. Gagnon and R. Guardo, "Accounting for hardware imperfections in EIT image reconstruction algorithms," Physiol. Meas., vol. 28, pp. S13, 2007.
    • [20] B. Rigaud, N. Chauveau, B. Ayeva, F. Fargues, E. Martinez and J. Morucci, "Modular cole phantom for parametric electrical impedance tomography," in Engineering in Medicine and Biology Society, 1996. Bridging Disciplines for Biomedicine. Proceedings of the 18th Annual International Conference of the IEEE, 1996, pp. 794-795.
    • [21] I. Schneider, R. Kleffel, D. Jennings and A. Courtenay, "Design of an electrical impedance tomography phantom using active elements," Medical and Biological Engineering and Computing, vol. 38, pp. 390- 394, 2000.
    • [22] H. Gagnon, Y. Sigmen, A. E. Hartinger and R. Guardo, "An active phantom to assess the robustness of EIT systems to electrode contact impedance variations," in Proceedings of the International Conference on Biomedical Applications of Electrical Impedance Tomography (EIT'09), 2009.
    • [23] K. S. Cole and R. H. Cole, "Dispersion and absorption in dielectrics I. Alternating current characteristics," J. Chem. Phys., vol. 9, pp. 341-351, 1941.
    • [24] K. S. Cole and R. H. Cole, "Dispersion and absorption in dielectrics II. Direct current characteristics," J. Chem. Phys., vol. 10, pp. 98-105, 1942.
    • [25] J. Jossinet, "The impedivity of freshly excised human breast tissue," Physiol. Meas., vol. 19, pp. 61, 1998.
    • [26] W. Wang, M. Tang, M. McCormick and X. Dong, "Preliminary results from an EIT breast imaging simulation system," Physiol. Meas., vol. 22, pp. 39, 2001.
    • [27] W. Wang, L. Wang, G. Qiao, P. Prickett, B. Bramer, B. Tunstall and M. Al-Akaidi, "Study into the repeatability of the electrode-skin interface utilizing electrodes commonly used in electrical impedance tomography," in 13th International Conference on Electrical Bioimpedance and the 8th Conference on Electrical Impedance Tomography, 2007b, pp. 336-339.
    • [28] A. J. Surowiec, S. S. Stuchly, J. R. Barr and A. Swarup, "Dielectric properties of breast carcinoma and the surrounding tissues," Biomedical Engineering, IEEE Transactions On, vol. 35, pp. 257-263, 1988.
  • No related research data.
  • No similar publications.

Share - Bookmark

Download from

Cite this article