Title :
A RF sensor for in vivo measurements of the dielectric properties of anisotropic tissue
Author :
Liang Zhang ; Dongming Zhou ; Peiguo Liu ; Xiuzhen Dong
Author_Institution :
Nat. Univ. of Defense Technol., Changsha, China
Abstract :
In this paper, a new sensor is proposed for the dielectric properties in vivo measurement of anisotropic tissue in radio frequency band. The simulative studies were performed at frequency ranged from 10MHz to 150MHz, which validated the potential ability of this sensor in vivo measurement of dielectric properties of anisotropic tissue. According to the simulative results, several technical expatiations were given, e.g. the influence of energy coupling and the sensor sensitivity to different anisotropy ratios with different probe dimension designs. Equivalent circuit model was proposed to calculate the dielectric properties of anisotropic tissue, results shows that the relative error of measurement can be kept blow 12%. This novel sensor may indicate the dielectric properties of anisotropic tissue conveniently and accurately in radio frequency band.
Keywords :
bioelectric phenomena; biological tissues; biomedical measurement; equivalent circuits; physiological models; radiofrequency measurement; RF sensor; anisotropic tissue dielectric properties; anisotropy ratio; energy coupling; equivalent circuit model; frequency 10 MHz to 150 MHz; in vivo measurement; probe dimension design; radio frequency band; relative measurement error; sensor sensitivity; Anisotropic magnetoresistance; Couplings; Dielectric measurement; Dielectrics; Frequency measurement; Metals; Probes;
Conference_Titel :
Bioinformatics and Bioengineering (BIBE), 2013 IEEE 13th International Conference on
Conference_Location :
Chania
DOI :
10.1109/BIBE.2013.6701657
