A Local Region of Interest Imaging Method for Electrical Impedance Tomography with Internal Electrodes
Joint Authors
Seo, Jin Keun
Je Woo, Eung
Farooq, Adnan
McEwan, Alistair L.
Kwon, Hyeuknam
Oh, Tong In
Source
Computational and Mathematical Methods in Medicine
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-07-08
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Electrical Impedance Tomography (EIT) is a very attractive functional imaging method despite the low sensitivity and resolution.
The use of internal electrodes with the conventional reconstruction algorithms was not enough to enhance image resolution and accuracy in the region of interest (ROI).
We propose a local ROI imaging method with internal electrodes developed from careful analysis of the sensitivity matrix that is designed to reduce the sensitivity of the voxels outside the local region and optimize the sensitivity of the voxel inside the local region.
We perform numerical simulations and physical measurements to demonstrate the localized EIT imaging method.
In preliminary results with multiple objects we show the benefits of using an internal electrode and the improved resolution due to the local ROI image reconstruction method.
The sensitivity is further increased by allowing the surface electrodes to be unevenly spaced with a higher density of surface electrodes near the ROI.
Also, we analyse how much the image quality is improved using several performance parameters for comparison.
While these have not yet been studied in depth, it convincingly shows an improvement in local sensitivity in images obtained with an internal electrode in comparison to a standard reconstruction method.
American Psychological Association (APA)
Kwon, Hyeuknam& McEwan, Alistair L.& Oh, Tong In& Farooq, Adnan& Je Woo, Eung& Seo, Jin Keun. 2013. A Local Region of Interest Imaging Method for Electrical Impedance Tomography with Internal Electrodes. Computational and Mathematical Methods in Medicine،Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-511993
Modern Language Association (MLA)
Kwon, Hyeuknam…[et al.]. A Local Region of Interest Imaging Method for Electrical Impedance Tomography with Internal Electrodes. Computational and Mathematical Methods in Medicine No. 2013 (2013), pp.1-9.
https://search.emarefa.net/detail/BIM-511993
American Medical Association (AMA)
Kwon, Hyeuknam& McEwan, Alistair L.& Oh, Tong In& Farooq, Adnan& Je Woo, Eung& Seo, Jin Keun. A Local Region of Interest Imaging Method for Electrical Impedance Tomography with Internal Electrodes. Computational and Mathematical Methods in Medicine. 2013. Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-511993
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-511993