Computational method for estimating boundary of abdominal subcutaneous fat for absolute electrical impedance tomography

2017 ◽  
Vol 34 (1) ◽  
pp. e2909 ◽  
Author(s):  
Tohru F. Yamaguchi ◽  
Yoshiwo Okamoto
Keyword(s):  
Electrical Impedance Tomography ◽  
Electrical Impedance ◽  
Subcutaneous Fat ◽  
Computational Method ◽  
Impedance Tomography

scholarly journals Electrical Impedance Tomography-Based Abdominal Subcutaneous Fat Estimation Method Using Deep Learning

2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Kyounghun Lee ◽  
Minha Yoo ◽  
Ariungerel Jargal ◽  
Hyeuknam Kwon
Keyword(s):  
Deep Learning ◽  
Electrical Impedance Tomography ◽  
Electrical Impedance ◽  
Subcutaneous Fat ◽  
Estimation Method ◽  
Training Dataset ◽  
Strong Nonlinearity ◽  
Learning Method ◽  
Impedance Tomography ◽  
Reconstruction Methods

This paper proposes a deep learning method based on electrical impedance tomography (EIT) to estimate the thickness of abdominal subcutaneous fat. EIT for evaluating the thickness of abdominal subcutaneous fat is an absolute imaging problem that aims at reconstructing conductivity distributions from current-to-voltage data. Existing reconstruction methods based on EIT have difficulty handling the inherent drawbacks of strong nonlinearity and severe ill-posedness of EIT; hence, absolute imaging may not be possible using linearized methods. To handle nonlinearity and ill-posedness, we propose a deep learning method that finds useful solutions within a restricted admissible set by accounting for prior information regarding abdominal anatomy. We determined that a specially designed training dataset used during the deep learning process significantly reduces ill-posedness in the absolute EIT problem. In the preprocessing stage, we normalize current-voltage data to alleviate the effects of electrodeposition and body geometry by exploiting knowledge regarding electrode positions and body geometry. The performance of the proposed method is demonstrated through numerical simulations and phantom experiments using a 10 channel EIT system and a human-like domain.

CALIBRATION OF A LOW COST ELECTRICAL IMPEDANCE TOMOGRAPHY SYSTEM WITH A RING OF RESISTORS AND A KCL SOLUTION

2019 ◽  
Author(s):  
Bruno Furtado de Moura ◽  
francisco sepulveda ◽  
Jorge Luis Jorge Acevedo ◽  
Wellington Betencurte da Silva ◽  
Rogerio Ramos ◽  
...  
Keyword(s):  
Electrical Impedance Tomography ◽  
Electrical Impedance ◽  
Low Cost ◽  
Impedance Tomography ◽  
Tomography System

Reconstruction of three-dimensional data for electrical impedance tomography

1992 ◽  
Vol 28 (11) ◽  
pp. 974-976 ◽  
Author(s):  
R. Gadd ◽  
F. Vinther ◽  
P.M. Record ◽  
P. Rolfe
Keyword(s):  
Electrical Impedance Tomography ◽  
Electrical Impedance ◽  
Three Dimensional ◽  
Impedance Tomography

scholarly journals Fast High-Precision Electrical Impedance Tomography System for Real-Time Perfusion Imaging

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 61570-61580 ◽  
Author(s):  
Weichen Li ◽  
Junying Xia ◽  
Ge Zhang ◽  
Hang Ma ◽  
Benyuan Liu ◽  
...  
Keyword(s):  
Real Time ◽  
Electrical Impedance Tomography ◽  
High Precision ◽  
Perfusion Imaging ◽  
Electrical Impedance ◽  
Impedance Tomography ◽  
Tomography System
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