Minimizing EIT image artefacts from mesh variability in finite element models

Physiological Measurement

Volumn 32, Issue 7, 2011, Pages 823-834

  Adler, Andy ^a   Lionheart, William R B ^b  

^a CARLETON UNIVERSITY   (Canada)

^b UNIVERSITY OF MANCHESTER   (United Kingdom)

Author keywords

anisotropy; electrical impedance tomography; finite element; image reconstruction; models

Indexed keywords

ANISOTROPY; ELECTRIC IMPEDANCE; ELECTRIC IMPEDANCE MEASUREMENT; ELECTRIC IMPEDANCE TOMOGRAPHY; IMAGE RECONSTRUCTION; INVERSE PROBLEMS; LAPLACE TRANSFORMS; MESH GENERATION;

BODY SURFACE; CONDUCTIVITY DISTRIBUTIONS; ELECTRICAL IMPE DANCE TOMOGRAPHY (EIT); ELECTRICAL MEASUREMENT; ELECTRICAL SIMULATION; FINITE ELEMENT MODELLING (FEM); IMAGE ARTEFACTS; IMAGES RECONSTRUCTION; NODE MOVEMENT; SIMULATIONS AND MEASUREMENTS;

FINITE ELEMENT METHOD;

EID: 79958785445     PISSN: 09673334     EISSN: 13616579     Source Type: Journal    
DOI: 10.1088/0967-3334/32/7/S07     Document Type: Conference Paper

References (25)

1. Abascal J P J, Arridge S R, Atkinson D, Horesh R, Fabrizi L, Horesh L, Bayford R H and Holder D S 2008 Use of anisotropic modelling in electrical impedance tomography: description of method and preliminary assessment of utility in imaging brain function in the adult human head NeuroImage 43 258-68
2. Abascal J P J, Lionheart W R B, Arridge S R, Schweiger M, Atkinson D and Holder D S 2011 Electrical impedance tomography in anisotropic media with known eigenvectors Inverse Problems 27 065004
3. Adler A and Guardo R 1996a Electrical impedance tomography: regularized imaging and contrast detection IEEE Trans. Med. Imaging 15 170-9 (Pubitemid 126780309)
4. Adler A, Guardo R and Berthiaume Y 1996b Impedance imaging of lung ventilation: do we need to account for chest expansion? IEEE Trans. Biomed. Eng. 43 414-20 (Pubitemid 26110398)
5. Adler A, Borsic A, Polydorides N and Lionheart W R B 2008 Simple FEMs aren't as good as we thought: experiences developing EIDORS v3.3 Proc. Conf. EIT (Hannover, NH, USA)
6. Barber D C and Brown B H 1988 Errors in reconstruction of resistivity images using a linear reconstruction technique Clin. Phys. Physiol. Meas. 9 101-4 (Pubitemid 19020093)
7. Breckon W R and Pidcock M K 1988 Ill-posedness and non-linearity in electrical-impedance tomography Information Processing in Medical Imaging ed C N de Graaf and M A Viergever (New York: Plenum) pp 235-44
8. Cheney M, Isaacson D, Newell J C, Simske S and Goble J C 1990 NOSER: an algorithm for solving the inverse conductivity problem Int. J. Imaging Syst. Technol. 2 66-75
9. Gagnon H, Cousineau M, Adler A and Hartinger A 2010 A resistive mesh phantom for assessing the performance of EIT systems IEEE Trans. Biomed. Eng. 57 2257-66
10. Gómez-Laberge C and Adler A 2008 Direct EIT Jacobian calculations for conductivity change and electrode movement Physiol. Meas. 29 S89-99
11. Herwanger J V, Pain C C, Binley A, De Oliveira C R E and Worthington M H 2004 Anisotropic resistivity tomography Geophys. J. Int. 158 409-25 (Pubitemid 39131181)
12. Holder D S (ed) 2005 Electrical Impedance Tomography (Bristol: Institute of Physics Publishing)
13. Kohn R V and McKenney A 1990 Numerical implementation of a variational method for electrical-impedance tomography Inverse Problems 6 389-414
14. Kolehmainen V, Lassas M and Ola P 2007 The inverse conductivity problem with an imperfectly known boundary in three dimensions SIAM J. Appl. Math. 67 1440-52 (Pubitemid 47613214)
15. Kolehmainen V, Schweiger M, Nissilä I, Tarvainen T, Arridge S R and Kaipio J P 2009 Approximation errors and model reduction in three-dimensional diffuse optical tomography J. Opt. Soc. Am. A 26 2257-68
16. Murai T and Kagawa Y 1985 Electrical impedance computed tomography based on finite element model IEEE Trans. Biomed. Eng. 32 177-84
17. Nissinen A, Kolehmainen V and Kaipio J P 2010 Compensation of errors due to incorrect model geometry in electrical impedance tomography J. Phys.: Conf. Ser. 224 012050
18. Schöberl J 1997 NETGEN: an advancing front 2D/3D-mesh generator based on abstract rules Comput. Vis. Sci. 1 41-52
19. Seagar A D and Bates R H T 1985 Full-wave computed tomography: part 4. Low-frequency electric current CT IEE Proc. A 132 455-66 (Pubitemid 15605679)
20. Soleimani M, Gómez-Laberge C and Adler A 2006 Imaging of conductivity changes and electrode movement in EIT Physiol. Meas. 27 S103-13
21. Silvester P P and Ferrari R L 1990 Finite Elements for Electrical Engineers (Cambridge: Cambridge University Press)
22. Tarvainen T, Kolehmainen V, Kaipio J P and Arridge S R 2010 Corrections to linear methods for diffuse optical tomography using approximation error modelling Biomed. Opt. Express 1 209-22
23. Vauhkonen P, Vauhkonen M Savolainen T and Kaipio J P 1999 Three-dimensional electrical impedance tomography based on the complete electrode model IEEE Trans. Biomed. Eng. 46 1150-60 (Pubitemid 29409325)
24. Yorkey T J, Webster J G and Tompkins W J 1987 Comparing reconstruction algorithms for electrical impedance tomography IEEE Trans. Biomed. Eng. 34 843-52 (Pubitemid 18013475)
25. Yang F and Patterson R 2007 The contribution of the lungs to thoracic impedance measurements: a simulation study based on a high resolution finite difference model Physiol. Meas. 28 S153-63