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Multifrequency electrical impedance tomography using spectral constraints.

Abstract：

:Multifrequency electrical impedance tomography (MFEIT) exploits the dependence of tissue impedance on frequency to recover an image of conductivity. MFEIT could provide emergency diagnosis of pathologies such as acute stroke, brain injury and breast cancer. We present a method for performing MFEIT using spectral constraints. Boundary voltage data is employed directly to reconstruct the volume fraction distribution of component tissues using a nonlinear method. Given that the reconstructed parameter is frequency independent, this approach allows for the simultaneous use of all multifrequency data, thus reducing the degrees of freedom of the reconstruction problem. Furthermore, this method allows for the use of frequency difference data in a nonlinear reconstruction algorithm. Results from empirical phantom measurements suggest that our fraction reconstruction method points to a new direction for the development of multifrequency EIT algorithms in the case that the spectral constraints are known, and may provide a unifying framework for static EIT imaging.

journal_name

IEEE Trans Med Imaging

journal_title

IEEE transactions on medical imaging

authors

Malone E,Sato Dos Santos G,Holder D,Arridge S

doi

10.1109/TMI.2013.2284966

subject

Has Abstract

pub_date

2014-02-01 00:00:00

pages

340-50

issue

2

eissn

0278-0062

issn

1558-254X

journal_volume

33

pub_type

杂志文章

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