Comparison of Measurement Method for Eddy Current Signal of Biological Tissue in Magnetic Induction Tomography

2011 ◽  
Author(s):  
Yi Lv ◽  
Xu Wang ◽  
Dan Yang ◽  
Yuyan Chen
Keyword(s):  
Eddy Current ◽  
Magnetic Induction ◽  
Biological Tissue ◽  
Measurement Method ◽  
Current Signal ◽  
Magnetic Induction Tomography

scholarly journals Advancements in Transmitters and Sensors for Biological Tissue Imaging in Magnetic Induction Tomography

Sensors ◽  
2012 ◽  
Vol 12 (6) ◽  
pp. 7126-7156 ◽  
Author(s):  
Zulkarnay Zakaria ◽  
Ruzairi Abdul Rahim ◽  
Muhammad Saiful Badri Mansor ◽  
Sazali Yaacob ◽  
Nor Muzakkir Nor Ayob ◽  
...  
Keyword(s):  
Magnetic Induction ◽  
Biological Tissue ◽  
Tissue Imaging ◽  
Magnetic Induction Tomography

scholarly journals Multi-Frequency Magnetic Induction Tomography System and Algorithm for Imaging Metallic Objects

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3671
Author(s):  
Gavin Dingley ◽  
Manuchehr Soleimani
Keyword(s):  
Eddy Current ◽  
Magnetic Induction ◽  
Dynamic Range ◽  
Industrial Process ◽  
Computationally Efficient ◽  
Destructive Testing ◽  
Imaging Tool ◽  
Internal Object ◽  
Magnetic Induction Tomography ◽  
Edge Based

Magnetic induction tomography (MIT) is largely focused on applications in biomedical and industrial process engineering. MIT has a great potential for imaging metallic samples; however, there are fewer developments directed toward the testing and monitoring of metal components. Eddy-current non-destructive testing is well established, showing that corrosion, fatigue and mechanical loading are detectable in metals. Applying the same principles to MIT would provide a useful imaging tool for determining the condition of metal components. A compact MIT instrument is described, including the design aspects and system performance characterisation, assessing dynamic range and signal quality. The image rendering ability is assessed using both external and internal object inclusions. A multi-frequency MIT system has similar capabilities as transient based pulsed eddy current instruments. The forward model for frequency swap multi-frequency is solved, using a computationally efficient numerical modelling with the edge-based finite elements method. The image reconstruction for spectral imaging is done by adaptation of a spectrally correlative base algorithm, providing whole spectrum data for the conductivity or permeability.

A Data Standardization and Reconstruction Method for Magnetic Induction Tomography

2013 ◽  
Vol 647 ◽  
pp. 560-565 ◽  
Author(s):  
Qiang Du ◽  
Bao Dong Bai ◽  
Li Ke
Keyword(s):  
Eddy Current ◽  
Magnetic Induction ◽  
Impedance Measurement ◽  
Reconstruction Algorithm ◽  
Biological Tissues ◽  
Measured Data ◽  
Image Resolution ◽  
Reconstruction Method ◽  
Data Standardization ◽  
Magnetic Induction Tomography

Magnetic induction tomography (MIT) is a biologic tomography technology, which is to obtain the conductivity distribution by detecting the data on the boundary of the imaging area based on the eddy current principle. The small impedance difference between biological tissues makes the eddy current weak, and it leads to a direct effect on the biological impedance measurement and imaging sensitivity. A measured data standardization method is presented in this paper for enhancing the measured data sensitivity, and combined with the back-projection reconstruction algorithm to get reconstruction image. It is applied to a variety of measurement and the simulation experiment based on the calculation results of finite-element methods. The reconstructed images indicate that the method can improve the image resolution and sensitivity, and which provides an effective data standardization and reconstruction algorithm for the magnetic induction tomography.

scholarly journals NUMERICAL ASPECTS OF THE SECONDARY MAGNETIC FIELD MAPPING IN MAGNETIC INDUCTION TOMOGRAPHY

2017 ◽  
Vol 7 (3) ◽  
pp. 11-14
Author(s):  
Beata Szuflitowska ◽  
Marcin Ziolkowski ◽  
Krzysztof Stawicki
Keyword(s):  
Magnetic Field ◽  
Cell Volume ◽  
Eddy Current ◽  
Magnetic Induction ◽  
Imaging Techniques ◽  
Magnetic Field Mapping ◽  
Electrical Conductivities ◽  
Eddy Current Density ◽  
Magnetic Induction Tomography

Magnetic Induction Tomography (MIT) belongs to the noncontact electromagnetic imaging techniques. This paper focuses on determination of a secondary magnetic field map calculated with the help of the Biot-Savart law around the low-conductivity object. The inclusions of various shapes and different electrical conductivities values and two measurement planes are considered. In each case the objects’ single maximal cell volume with assumed uniform eddy current density has been determined. In order to keep the relative error below 1% the object should be divided in most cases into elements with maximal cell volume equal to 0.244 mm3 for yz − plane, and 0.03 mm3 for xy − plane.

scholarly journals A Novel Algorithm for High-Resolution Magnetic Induction Tomography Based on Stacked Auto-Encoder for Biological Tissue Imaging

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 185597-185606
Author(s):  
Ruijuan Chen ◽  
Juan Huang ◽  
Huiquan Wang ◽  
Bingnan Li ◽  
Zhe Zhao ◽  
...  
Keyword(s):  
High Resolution ◽  
Magnetic Induction ◽  
Biological Tissue ◽  
Tissue Imaging ◽  
Magnetic Induction Tomography ◽  
Novel Algorithm
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