Improving Image Quality in Electrical Impedance Tomography (EIT) Using Projection Error Propagation-Based Regularization (PEPR) Technique: A Simulation Study

Abstract A Projection Error Propagation-based Regularization (PEPR) method is proposed and the reconstructed image quality is improved in Electrical Impedance Tomography (EIT). A projection error is produced due to the misfit of the calculated and measured data in the reconstruction process. The variation of the projection error is integrated with response matrix in each iteration and the reconstruction is carried out in EIDORS. The PEPR method is studied with the simulated boundary data for different inhomogeneity geometries. Simulated results demonstrate that the PEPR technique improves image reconstruction precision in EIDORS and hence it can be successfully implemented to increase the reconstruction accuracy in EIT.

[1]  J. Reddy.  An introduction to the finite element method , 1989 .

[2]  Richard H. Bayford,et al.  Electrical impedance tomography of human brain function using reconstruction algorithms based on the finite element method , 2003, NeuroImage.

[3]  B. Pogue,et al.  Automated region detection based on the contrast-to-noise ratio in near-infrared tomography. , 2004, Applied optics.

[4]  Thomas J. Yorkey,et al.  Comparing reconstruction methods for electrical impedance tomography , 1987, Annals of Biomedical Engineering.

[5]  Tushar Kanti Bera,et al.  A study of practical biological phantoms with simple instrumentation for Electrical Impedance Tomography (EIT) , 2009, 2009 IEEE Instrumentation and Measurement Technology Conference.

[6]  Jari P. Kaipio,et al.  Tikhonov regularization and prior information in electrical impedance tomography , 1998, IEEE Transactions on Medical Imaging.

[7]  Ying Li,et al.  A novel combination method of electrical impedance tomography inverse problem for brain imaging , 2005, IEEE Transactions on Magnetics.

[8]  B. Brown,et al.  Applied potential tomography: possible clinical applications. , 1985, Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics.

[9]  Charles R. Wilson,et al.  The Essential Physics of Medical Imaging, 2nd Edition , 2003 .

[10]  W. Hou,et al.  New regularization method in electrical impedance tomography , 2002 .

[11]  Phaneendra K. Yalavarthy,et al.  Helmholtz-Type Regularization Method for Permittivity Reconstruction Using Experimental Phantom Data of Electrical Capacitance Tomography , 2010, IEEE Transactions on Instrumentation and Measurement.

[12]  Denyer Cwl.  Electronics for real-time and three-dimensional electrical impedance tomographs. , 1996 .

[13]  David Isaacson,et al.  Electrical Impedance Tomography , 1999, SIAM Rev..

[14]  William R B Lionheart.  EIT reconstruction algorithms: pitfalls, challenges and recent developments. , 2004, Physiological measurement.

[15]  Raul Gonzalez Lima,et al.  Dynamic Imaging in Electrical Impedance Tomography of the Human Chest With Online Transition Matrix Identification , 2010, IEEE Transactions on Biomedical Engineering.

[16]  A. E. Hoetink,et al.  Imaging of thoracic blood volume changes during the heart cycle with electrical impedance using a linear spot-electrode array , 2002, IEEE Transactions on Medical Imaging.

[17]  William R B Lionheart,et al.  A Matlab toolkit for three-dimensional electrical impedance tomography: a contribution to the Electrical Impedance and Diffuse Optical Reconstruction Software project , 2002 .

[18]  K D Paulsen,et al.  Electrical impedance tomography reconstruction for three-dimensional imaging of the prostate , 2010, Physiological measurement.

[19]  K D Paulsen,et al.  Contrast-detail analysis for detection and characterization with near-infrared diffuse tomography. , 2000, Medical physics.

[20]  K. Rajan,et al.  Interior photon absorption based adaptive regularization improves diffuse optical tomography , 2010, International Conference on Digital Image Processing.

[21]  R M Vasu,et al.  Diffuse optical tomography using intensity measurements and the a priori acquired regions of interest: theory and simulations , 2005, Physics in medicine and biology.

[22]  Y. L. Mo,et al.  Increasing image resolution in electrical impedance tomography , 2002 .

[23]  Hung-Yuan Chung,et al.  The Scanning Data Collection Strategy for Enhancing the Quality of Electrical Impedance Tomography , 2008, IEEE Transactions on Instrumentation and Measurement.

[24]  R. Granit.  THE HEART ( Extract from “ Principles and Applications of Bioelectric and Biomagnetic Fields , 2005 .

[25]  D C Barber,et al.  An assessment of dynamic images by applied potential tomography for monitoring pulmonary perfusion. , 1988, Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics.

[26]  T. Chan,et al.  Level set and total variation regularization for elliptic inverse problems with discontinuous coefficients , 2004 .

[27]  Manuchehr Soleimani,et al.  Nonlinear image reconstruction for electrical capacitance tomography using experimental data , 2005 .

[28]  Brian H. Brown,et al.  Medical impedance tomography and process impedance tomography: a brief review , 2001 .

[29]  T. Hope,et al.  Technology review: The use of electrical impedance scanning in the detection of breast cancer , 2003, Breast Cancer Research.

[30]  Tianzi Jiang,et al.  Improving image quality of diffuse optical tomography with a projection-error-based adaptive regularization method. , 2008, Optics express.

[31]  S. Grimnes,et al.  Invasive Electrical Impedance Tomography for Blood Vessel Detection , 2010, The open biomedical engineering journal.

[32]  B. M. Graham,et al.  Enhancements in Electrical Impedance Tomography (EIT) image reconstruction for three-dimensional lung imaging , 2007 .

[33]  C. J. Grootveld.  Measuring & modeling of concentrated settling suspensions using electrical impedance tomography , 1996 .

[34]  G Malandain,et al.  Model-based respiratory motion compensation for emission tomography image reconstruction , 2007, Physics in medicine and biology.

[35]  Tushar Kanti Bera,et al.  Resistivity imaging of a reconfigurable phantom with circular inhomogeneities in 2D-electrical impedance tomography , 2011 .

[36]  A. Formisano,et al.  Effective Exploitation of Prior Information in Electrical Impedance Tomography for Thermal Monitoring of Hyperthermia Treatments , 2009, IEEE Transactions on Magnetics.

[37]  Tushar Kanti Bera,et al.  Studying the Boundary Data Profile of a Practical Phantom for Medical Electrical Impedance Tomography with Different Electrode Geometries , 2009 .

[38]  L Tarassenko,et al.  Impedance imaging in the newborn. , 1987, Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics.

[39]  A.R. Zapata-Ferrer,et al.  Electrical impedance tomography: an electronic design, with adaptive voltage measurements and a phantom circuit for research in the epilepsy field , 1997, Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136).

[40]  S. Arridge.  Optical tomography in medical imaging , 1999 .

[41]  Robert Plonsey,et al.  Bioelectromagnetism: Principles and Applications of Bioelectric and Biomagnetic Fields , 1995 .

[42]  L M Heikkinen,et al.  A MATLAB package for the EIDORS project to reconstruct two-dimensional EIT images. , 2001, Physiological measurement.

[43]  John G. Webster,et al.  An Impedance Camera for Spatially Specific Measurements of the Thorax , 1978, IEEE Transactions on Biomedical Engineering.

[44]  Philippe Renaud,et al.  Cell Culture Imaging Using Microimpedance Tomography , 2008, IEEE Transactions on Biomedical Engineering.

[45]  Tushar Kanti Bera,et al.  A Simple instrumentation calibration technique for Electrical Impedance Tomography (EIT) using a 16-electrode phantom , 2009, 2009 IEEE International Conference on Automation Science and Engineering.

[46]  David Barber,et al.  Three dimensional electrical impedance tomography of the human thorax , 1996, Proceedings of 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society.