Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/13008
ชื่อเรื่อง: In vivo estimation of the head tissue conductivities by electrical impedance tomography technique and positivity constraint
ผู้แต่ง: Ouypornkochagorn T.
Keywords: Cerebrospinal fluid
Electric impedance
Electric impedance measurement
Electric impedance tomography
Histology
Tomography
Electrical impe dance tomography (EIT)
Electrical impedance tomography
In-vivo
Physiological properties
Posivity constraint
Robustness to noise
Simultaneous estimation
Tissue conductivity
Tissue
วันที่เผยแพร่: 2017
บทคัดย่อ: Reported head tissue conductivities to date are usually obtained from sample investigation in situ or in vitro. However, there are many issues to concern e.g. sample selection and preparation or the deterioration of physiological property over time. In vivo estimation is recently used to estimate based on certain techniques. Electrical impedance tomography (EIT) is a mentioned technique, however regarding the susceptibility to noise of EIT, the estimation often results unexpected outcome. The estimated conductivity values may be inaccurate and/or be negative. The number of tissues in the estimation is then usually not over two. In this work, positivity constraint was employed to restrain the estimate to be only positive. Simulation result shows that the employment of the constraint can improve estimation accuracy and robustness to noise and also modeling error. Simultaneous estimation for all five main tissues is possible as well, even though the estimation of the cerebrospinal fluid conductivity is still not accurate. ©2017 IEEE.
URI: https://ir.swu.ac.th/jspui/handle/123456789/13008
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85039947538&doi=10.1109%2fIEECON.2017.8075867&partnerID=40&md5=5a4aa5c43425fa658520dd36a1625ab6
Appears in Collections:Scopus 1983-2021

Files in This Item:
There are no files associated with this item.


Items in SWU repository are protected by copyright, with all rights reserved, unless otherwise indicated.