نتایج جستجو برای: Electrical Impedance Spectroscopy

تعداد نتایج: 383621  

Journal: :iranian journal of medical physics 0
ahmad keshtkar medical physics department, medical faculty, tabriz university of medical sciences, tabriz, iran

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...

Normal and cancerous tissue have changing values of Electrical Impedance Spectroscopy (EIS). In which with comparing their impedance spectrum with bio-impedance measuring system, they can be used for cancerous tissue diagnosis. Probe is the main part in electrical impedance measurement system. In this paper by employing finite element method EIS factor of mucous tissue derived in 5 different pr...

2010
Qinghai Shi Andreas Heinig Olfa Kanoun

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 ...

2012
Yusmeeraz Yusof Yoshiyuki Yanagimoto Shigeyasu Uno Kazuo Nakazato

We demonstrate a nonfaradaic electrochemical impedance spectroscopy measurement of biochemically modified gold plated electrodes using a two-electrode system. The absence of any redox indicator in the impedance measurements provide more precise and accurate characterization of the measured bioanalyte at molecular resolution. An equivalent electrical circuit of the electrodeelectrolyte interface...

2015
Robert Eisenberg

Impedance Spectroscopy resolves electrical properties into uncorrelated variables, as a function of frequency, with exquisite resolution. Separation is robust and most useful when the system is linear. Impedance spectroscopy combined with appropriate structural knowledge provides insight into pathways for current flow, with more success than other methods. Biological applications of impedance s...

2017
Christine Fink Anissa Schweizer Lorenz Uhlmann Holger A Haenssle

INTRODUCTION The clinical and histological changes of nevi after ultraviolet (UV) irradiation have been studied in detail. In contrast, the impact of UV irradiation on electrical impedance spectroscopy scores of nevi has not been investigated. However, for physicians, it is essential to know the extent to which changes in electrical impedance spectroscopy scores of nevi may be attributed to sea...

2017

Electrical impedance tomography (EIT) is a noninvasive type of medical imaging in which the electrical conductivity, permittivity, and impedance of a part of the body is inferred from surface electrode measurements and used to form a tomographic image of that part. Electrical conductivity varies considerably among various biological tissues (absolute EIT) or the movement of fluids and gases wit...

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