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Direct calculation of the electrode movement Jacobian for 3D EIT Camille Gomez-Laberge
 

Summary: Direct calculation of the electrode movement Jacobian for 3D EIT
Camille G´omez-Laberge
1
and Andy Adler
1
1
Systems and Computer Engineering, Carleton University, Ottawa, Canada
Abstract--Electrical Impedance Tomography (EIT) of me-
dia with deformable boundaries is very sensitive to electrode
movement. This is especially important for EIT images of the
thorax, which become distorted with breathing and posture
change. Previously, we proposed a reconstruction method for
imaging conductivity change and electrode movement based
on an indirect perturbation Jacobian calculation, involving the
re-computation of the forward solution. Although suitable for
2D and small 3D imaging, the reconstruction accuracy of this
method gradually decreases, while the computation time grows
rapidly for large 3D problems. We propose an efficient, novel
method of calculating the Jacobian matrix directly from the
Finite Element Method (FEM) system equations, without the

  

Source: Adler, Andy - Department of Systems and Computer Engineering, Carleton University

 

Collections: Computer Technologies and Information Sciences