Impedance-Acoustic Tomography

In this work we present a new hybrid imaging technique that combines electrical impedance tomography (EIT) with acoustic tomography. The novel technique makes use of the fact that the absorbed electrical energy inside the body raises its temperature, thus leading to expansion effects. The expansion then induces an acoustic wave which can be recorded outside the body and consequently be used to calculate the absorbed energy inside the body, from which the electrical conductivity can be reconstructed. In other words, we try to combine the high contrast of EIT with the high resolution of ultrasound.

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

[2]  Eric Bonnetier,et al.  Electrical Impedance Tomography by Elastic Deformation , 2008, SIAM J. Appl. Math..

[3]  Liliana Borcea,et al.  Addendum to 'Electrical impedance tomography' , 2003 .

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

[5]  G.J. Saulnier,et al.  An Electrical Impedance Spectroscopy System for Breast Cancer Detection , 2007, 2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society.

[6]  M. Lindstrom,et al.  A large-scale study of the ultrawideband microwave dielectric properties of normal breast tissue obtained from reduction surgeries , 2007, Physics in medicine and biology.

[7]  Bin He,et al.  Investigation on magnetoacoustic signal generation with magnetic induction and its application to electrical conductivity reconstruction , 2007, Physics in medicine and biology.

[8]  J. Lions,et al.  Non-homogeneous boundary value problems and applications , 1972 .

[9]  C. Kollmann,et al.  Medizintechnik – Verfahren, Systeme, Informationsverarbeitung , 2002 .

[10]  M. J. Richardson,et al.  New materials for dielectric simulation of tissues. , 1991, Physics in medicine and biology.

[11]  Allaberen Ashyralyev,et al.  Partial Differential Equations of Elliptic Type , 2004 .

[12]  Otmar Scherzer,et al.  Filtered backprojection for thermoacoustic computed tomography in spherical geometry , 2005, Mathematical Methods in the Applied Sciences.

[13]  M. Lindstrom,et al.  A large-scale study of the ultrawideband microwave dielectric properties of normal, benign and malignant breast tissues obtained from cancer surgeries , 2007, Physics in medicine and biology.

[14]  Rakesh,et al.  Determining a Function from Its Mean Values Over a Family of Spheres , 2004, SIAM J. Math. Anal..

[15]  Ohin Kwon,et al.  Magnetic resonance electrical impedance tomography (MREIT): simulation study of J-substitution algorithm , 2002, IEEE Transactions on Biomedical Engineering.

[16]  Ohin Kwon,et al.  Uniqueness and convergence of conductivity image reconstruction in magnetic resonance electrical impedance tomography , 2003 .

[17]  W. D. Gregory,et al.  Correction of electrode polarization contributions to the dielectric properties of normal and cancerous breast tissues at audio/radiofrequencies , 2007, Physics in medicine and biology.

[18]  R H Bayford,et al.  Bioimpedance tomography (electrical impedance tomography). , 2006, Annual review of biomedical engineering.

[19]  Lihong V. Wang,et al.  Photoacoustic imaging in biomedicine , 2006 .

[20]  Otmar Scherzer,et al.  Variational Methods in Imaging , 2008, Applied mathematical sciences.

[21]  J. Lions,et al.  Non homogeneous boundary value problems for second order hyperbolic operators , 1986 .

[22]  M. Haltmeier,et al.  Exact and approximative imaging methods for photoacoustic tomography using an arbitrary detection surface. , 2007, Physical review. E, Statistical, nonlinear, and soft matter physics.

[23]  Alexandru Tamasan,et al.  Conductivity imaging with a single measurement of boundary and interior data , 2007 .

[24]  Ohin Kwon,et al.  On a Nonlinear Partial Differential Equation Arising in Magnetic Resonance Electrical Impedance Tomography , 2002, SIAM J. Math. Anal..