Caries diagnosis by the measurement of electrical resistance is hampered by polarization effects when dc or single-low-frequency ac currents are used. Electrical impedance spectroscopy, measuring impedance over a large range of frequencies, will provide more detailed information about the electrical characteristics of teeth. It was the aim of this study (a) to characterize the complex impedance...

The use of 3D cell culture for tissue engineering and regenerative medicine applications often challenges conventional biochemical optical assays. Impedance-based cellular assays have shown their potential to retrieve dielectric parameters pertaining behavior such as viability, proliferation, differentiation 2D adherent culture. Herein, simultaneous impedance imaging viability measurements mult...

A novel method for the numerical solution of a hybrid (coupled physics) inverse problem is proposed. Based on regularized weighted mean curvature flow equation, this can be considered as an alternative to variational approach solving least gradient Dirichlet problems arising in electrical conductivity imaging, particular, Current Density Impedance Imaging (CDII). Utilizing Sternberg–Ziemer theo...

Electrical impedance of biological matter is known as electrical bioimpedance or simply as bio-impedance. Bio-impedance devices are of great value for monitoring the pathological and physiological status of biological tissues in clinical and home environments. The technological progress in instrumentation has significantly contributed to the progress that has been observed during the last past ...

We present numerical results for two reconstruction methods for a new planar electrical impedance tomography device. This prototype allows noninvasive medical imaging techniques if only one side of a patient is accessible for electric measurements. The two reconstruction methods have different properties: one is a linearization-type method that allows quantitative reconstructions; the other one...

A recently developed EITS system, the UCLH mk2.5 was tested on a resistor phantom and in linear time and frequency difference imaging of a cylindrical tank, 10cm diameter, filled with 0.1% saline, and 16 electrodes in a ring; the test object was a cylinder of banana, 2 cm long and 1 cm in diameter. Reproducible images with the same location as the test object were obtained with both methods. No...

introduction bladder cancer is the most common malignancy in elderly people and most bladder cancers are transitional cell carcinomas (tcc). bladder pathology is usually investigated visually by cystoscopy and this technique can represent different conditions ranging from simple inflammation to flat cis. however, biopsies must be taken from the suspected area to obtain diagnostic information. t...