An apparatus capable of rapidly detecting changes in electrical impedance was utilized for the continuous monitoring of bacterial growth in routine urine specimens in a clinical laboratory. In a trial study, 200 clinical specimens analyzed by the electrical impedance method resulted in an average detection time of 2.5 h for 41 clinically significant specimens, whereas conventional methods for b...

Electrical impedance tomography is a noninvasive imaging technique for recovering the admittivity distribution inside a body from boundary measurements of current and voltage. In practice, impedance tomography suffers from inaccurate modelling of the measurement setting: The exact electrode locations and the shape of the imaged object are not necessarily known precisely. In this work, we tackle...

In electrical impedance tomography (EIT) the impedance distribution is usually estimated in xed elements inside the object. The implicit assumption is most often that the impedance in each element is more or less independent of the other (neighboring) elements. In many cases, such as in the impedance imaging of the chest, this model might not be a feasible one. An example is the heart muscle an...

Over the past 30 years lung imaging has greatly contributed to the current understanding of the pathophysiology and the management of acute respiratory distress syndrome (ARDS). In the past few years, in addition to chest X-ray and lung computed tomography, newer functional lung imaging techniques, such as lung ultrasound, positron emission tomography, electrical impedance tomography and magnet...

Electrical Impedance Tomography (EIT) can perform non-invasive, low-cost, safe, fast, and simple system structure functional imaging to map the distribution changes of root zone. Multi frequency EIT solves problem that single-frequency only carry more impedance information than a given single excitation frequency. It still remains challenges simultaneously obtain multi-frequency electrical tomo...

Multi Frequency Electrical Impedance Tomography (MFEIT) is a recently developed non-invasive portable imaging technique. Acquisition is performed by injection of current at multiple frequencies through a set of scalp electrodes, and boundary voltages are measured over another set. 3D impedance distribution maps can be reconstructed by solving the inverse admittivity problem. Biological tissue i...

The goal of our investigation was to explore the level membrane permeabilization in plant and animal food matrices (potato, apple, chicken) as resulting from subjecting these pulsed electric field treatment whereby we employed different assessment methods (electrical impedance spectroscopy, current-voltage measurements, magnetic resonance imaging). Our study performed using a number amplitudes ...

Electrical Impedance Tomography (EIT) is a imaging technique that attempts to reconstruct the conductivity distribution inside an object from electrical currents and potentials measured at its surface. The EIT reconstruction problem can be approached as an optimization problem where one tries to maximize the matching between a simulated impedance domain and the observed one. This optimization p...

Radon Transformation is generally used to construct optical image (like CT image) from the projection data in biomedical imaging. In this paper, the concept of Radon Transformation is implemented to reconstruct Electrical Impedance Topographic Image (conductivity or resistivity distribution) of a circular subject. A parallel resistance model of a subject is proposed for Electrical Impedance Top...