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. 2021 Sep 29;11:19273. doi: 10.1038/s41598-021-98793-0

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Illustration of the measurement sequence and relative impedance changes. First row, relax tidal breaths and slow vital capacity maneuvers recorded with a spirometer. Second row, impedance-time curves during the SVC maneuver. Third row, correlation between the spirometry volume and EIT impedance changes. Fourth row, impedance variation during SVC. AU, arbitrary unit. PV500 PulmoVista 500, PE100 PulmoEIT-100.