7th International Workshop on Models and Analysis of Vocal Emissions for Biomedical Applications (MAVEBA 2011)

Florence, Italy
August 25-27, 2011

Electrical Impedance Tomography Imaging of Larynx

A. Seppänen (1), A. Nissinen (1,2), V. Kolehmainen (1), S. Siltanen (3), A.-M. Laukkanen (2)

(1) Department of Applied Physics, University of Eastern Finland, Kuopio, Finland
(2) Speech and Voice Research Laboratory, School of Education, University of Tampere, Finland
(3) Department of Mathematics and Statistics, University of Helsinki, Finland

In this paper we discuss electrical impedance tomography (EIT) imaging of human larynx. Especially, we focus on monitoring of vocal folds. EIT is a non-invasive three-dimensional (3D) imaging modality based electrical measurements conducted from the skin of a person. We hypothesize that EIT reconstructions can provide information on vocal folds' movement as well as physiological changes in vocal fold tissue caused by the vocal loading. This information could be used for quantifying vocal loading and measuring the consequences of vocal loading. Tn this paper, the feasibility of EIT for imaging of larynx is tested with numerical simulation studies. The preliminary results suggest that EIT is sensitive to movement of vocal folds.

Index Terms. electrical impedance tomography (EIT), imaging, larynx, vocal loading

Full Paper (reprinted with permission from Firenze University Press)

Bibliographic reference.  Seppänen, A. / Nissinen, A. / Kolehmainen, V. / Siltanen, S. / Laukkanen, A.-M. (2011): "Electrical impedance tomography imaging of larynx", In MAVEBA-2011, 27-29.