Publication: Constrained modeling for image reconstruction in the application of Electrical Impedance Tomography to the head
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Issued Date
2017
Resource Type
File Type
application/pdf
ISSN
19457928
Other identifier(s)
2-s2.0-85023190801
Rights Holder(s)
มหาวิทยาลัยศรีนครินทรวิโรฒ
Bibliographic Citation
Proceedings - International Symposium on Biomedical Imaging. (2017), p.548-551
Suggested Citation
Ouypornkochagorn T. Constrained modeling for image reconstruction in the application of Electrical Impedance Tomography to the head. Proceedings - International Symposium on Biomedical Imaging. (2017), p.548-551. doi:10.1109/ISBI.2017.7950580 Retrieved from: https://hdl.handle.net/20.500.14740/4142
Author(s)
Abstract
Electrical Impedance Tomography (EIT) is an alternative way to image brain functions, in the form of conductivity distribution image, by using the boundary voltage information while a small current is injected. In head applications, due to the lack of accurate head models and the high-degree nonlinearity, the image reconstruction tends to fail. Recently, a nonlinear difference imaging approach has been proposed to mitigate modeling error. This approach, however, is based on unconstrained modeling that allows tissue conductivity values to be unrealistically negative. Consequently, substantial image artifacts are possibly conducted. In this work, two methods of constrained modeling were demonstrated they are able to substantially reduce artifacts and improve localization performance. New images of conductivity distribution of the mapped constraint domains, derived from the use of constrained modeling, are also exhibited here. The simulation result shows that the new images achieve better localization performance than those of using unconstrained modeling. © 2017 IEEE.
Subject(s)
Electric impedance
Electric impedance measurement
Electric impedance tomography
Image processing
Medical imaging
Tomography
Conductivity distributions
Constrained models
Difference imaging
Electrical impe dance tomography (EIT)
Electrical impedance tomography
Localization performance
Model errors
Tissue conductivity
Image reconstruction
Electric impedance measurement
Electric impedance tomography
Image processing
Medical imaging
Tomography
Conductivity distributions
Constrained models
Difference imaging
Electrical impe dance tomography (EIT)
Electrical impedance tomography
Localization performance
Model errors
Tissue conductivity
Image reconstruction