Boundary shape and electrical impedance tomography
نویسندگان
چکیده
منابع مشابه
Recovering Boundary Shape and Conductivity in Electrical Impedance Tomography
Electrical impedance tomography (EIT) aims to reconstruct the electric conductivity inside a physical body from current-to-voltage measurements at the boundary of the body. In practical EIT one often lacks exact knowledge of the domain boundary, and inaccurate modeling of the boundary causes artifacts in the reconstructions. A novel method is presented for recovering the boundary shape and an i...
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A level set based shape and topology optimization approach to electrical impedance tomography (EIT) problems with piecewise constant conductivities is introduced. The proposed solution algorithm is initialized by using topological sensitivity analysis. Then it relies on the notion of shape derivatives to update the shape of the domains where the conductivity takes its different values.
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Introduction: Electrical impedance tomography (EIT) is a non-invasive technique utilized in various medical applications, including brain imaging and other neurological diseases. Recognizing the physiological and anatomical characteristics of organs based on their electrical properties is one of the main applications of EIT, as each variety of tissue structure has its own electrical characteris...
متن کاملMonotonicity-Based Shape Reconstruction in Electrical Impedance Tomography
Current-voltage measurements in electrical impedance tomography (EIT) can be partially ordered with respect to definiteness of the associated self-adjoint Neumann-to-Dirichlet operators. With this ordering, a pointwise larger conductivity leads to smaller current-voltage measurements, and smaller conductivities lead to larger measurements. We present a converse of this simple monotonicity relat...
متن کاملOn Second Order Shape Optimization Methods for Electrical Impedance Tomography
This paper is devoted to the analysis of a second order method for recovering the a priori unknown shape of an inclusion ω inside a body Ω from boundary measurement. This inverse problem known as electrical impedance tomography has many important practical applications and hence has focussed much attention during the last years. However, to our best knowledge, no work has yet considered a secon...
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ژورنال
عنوان ژورنال: Inverse Problems
سال: 1998
ISSN: 0266-5611,1361-6420
DOI: 10.1088/0266-5611/14/1/012