Electrical Impedance Tomography using the finite element method in the mammography geometry

Author

Ardrey, D.B. ; Murphy, E.K. ; Isaacson, D. ; Saulnier, G.J. ; Newell, J.C.

Author_Institution

Rensselaer Polytech. Inst., Troy, NY, USA

fYear

2011

fDate

1-3 April 2011

Firstpage

1

Lastpage

2

Abstract

Electrical Impedance Tomography (EIT) has shown great potential to be used as a method for breast cancer screening. Combining EIT with x-ray mammography allows for both sets of data to be used in conjunction to make a more accurate diagnosis. Previous efforts to implement EIT in the mammography geometry have used analytical solutions to the forward model. This paper presents a three dimensional numerical forward model which uses a finite element method (FEM) to implement the complete electrode model (CEM) in EIT. We show that the numerical solution achieves greater accuracy than analytic models, and opens the way to implement an iterative inversion algorithm.

Keywords

biomedical electrodes; cancer; diagnostic radiography; electric impedance imaging; finite element analysis; mammography; medical computing; tomography; X-ray mammography; breast cancer screening; complete electrode model; electrical impedance tomography; finite element method; iterative inversion algorithm; mammography geometry; numerical solution; Electrodes; Finite element methods; Geometry; Mathematical model; Numerical models; Tomography; Voltage measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioengineering Conference (NEBEC), 2011 IEEE 37th Annual Northeast

Conference_Location

Troy, NY

ISSN

2160-7001

Print_ISBN

978-1-61284-827-3

Type

conf

DOI

10.1109/NEBC.2011.5778563

Filename

5778563