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A capacitance measurement method for imaging permittivity distribution in a brain phantom
Author(s) -
Kimoto Akira,
Shida Katsunori
Publication year - 1998
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/(sici)1520-6416(199802)122:3<37::aid-eej5>3.0.co;2-v
Subject(s) - imaging phantom , permittivity , capacitance , electrical capacitance tomography , materials science , distribution (mathematics) , relative permittivity , homogeneous , biomedical engineering , acoustics , optics , dielectric , mathematical analysis , physics , mathematics , statistical physics , optoelectronics , engineering , electrode , quantum mechanics
The purpose of our research was to image the temperature distribution inside a human head by non‐invasive measurement. To achieve this goal, we investigated a method for imaging the inhomogeneous permittivity distribution by measuring capacitance and to obtain the temperature distribution from the permittivity‐temperature characteristic. This paper describes the first step in estimating the inhomogeneous permittivity distribution using our proposed new capacitance measurement method. We present the results of experiments performed using this method on a homogeneous phantom containing agar‐agar. We estimate that the proposed method offers a practical technique for imaging inhomogeneous permittivity distributions, although some of the problems with this measurement procedure and image reconstruction system remain to be solved. © 1998 Scripta Technica. Electr Eng Jpn, 122(3): 37–45, 1998