Monotonicity-based electrical impedance tomography for lung imaging

Liangdong Zhou, Bastian Harrach, Jin Keun Seo

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)


This paper presents a monotonicity-based spatiotemporal conductivity imaging method for continuous regional lung monitoring using electrical impedance tomography (EIT). The EIT data (i.e. the boundary current-voltage data) can be decomposed into pulmonary, cardiac and other parts using their different periodic natures. The time-differential current-voltage operator corresponding to the lung ventilation can be viewed as either semi-positive or semi-negative definite owing to monotonic conductivity changes within the lung regions. We used these monotonicity constraints to improve the quality of lung EIT imaging. We tested the proposed methods in numerical simulations, phantom experiments and human experiments.

Original languageEnglish
Article number045005
JournalInverse Problems
Issue number4
Publication statusPublished - 2018 Mar 2

Bibliographical note

Funding Information:
J K Seo and L Zhou were supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MEST) (Nos. 2011-0028868, 2012R1A2A1A03670512).

Publisher Copyright:
© 2018 IOP Publishing Ltd.

All Science Journal Classification (ASJC) codes

  • Theoretical Computer Science
  • Signal Processing
  • Mathematical Physics
  • Computer Science Applications
  • Applied Mathematics


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