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Materials 2018, 11(6), 930;

Exploring the Potential of Electrical Impedance Tomography for Tissue Engineering Applications

Agile Tomography Group, School of Engineering, The University of Edinburgh, Edinburgh EH9 3JL, UK; (H.W.)
Department of Medical Oncology, Changzheng Hospital, Navy Medical University, Shanghai 200070, China
MRC Centre for Regenerative Medicine, The University of Edinburgh, Edinburgh EH16 4UU, UK
Author to whom correspondence should be addressed.
Received: 28 April 2018 / Revised: 24 May 2018 / Accepted: 29 May 2018 / Published: 31 May 2018
(This article belongs to the Special Issue Materials: 10th Anniversary)
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In tissue engineering, cells are generally cultured in biomaterials to generate three-dimensional artificial tissues to repair or replace damaged parts and re-establish normal functions of the body. Characterizing cell growth and viability in these bioscaffolds is challenging, and is currently achieved by destructive end-point biological assays. In this study, we explore the potential to use electrical impedance tomography (EIT) as a label-free and non-destructive technology to assess cell growth and viability. The key challenge in the tissue engineering application is to detect the small change of conductivity associated with sparse cell distributions in regards to the size of the hosting scaffold, i.e., low volume fraction, until they assemble into a larger tissue-like structure. We show proof-of-principle data, measure cells within both a hydrogel and a microporous scaffold with an ad-hoc EIT equipment, and introduce the frequency difference technique to improve the reconstruction. View Full-Text
Keywords: electrical impedance tomography; tissue engineering; cell viability; scaffolds; hydrogels electrical impedance tomography; tissue engineering; cell viability; scaffolds; hydrogels

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Wu, H.; Zhou, W.; Yang, Y.; Jia, J.; Bagnaninchi, P. Exploring the Potential of Electrical Impedance Tomography for Tissue Engineering Applications. Materials 2018, 11, 930.

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