Title :
Primary Multi-frequency Data Analyze in Electrical Impedance Scanning
Author :
Liu, Ruigang ; Dong, Xiuzhen ; Fu, Feng ; Shi, Xuetao ; You, Fusheng ; Ji, Zhenyu
Author_Institution :
Dept. of Med. Electron. Eng., Fourth Mil. Med. Univ., Xi´´an
Abstract :
This paper deduced the Cole-Cole arc equation in form of admittance by the traditional Cole-Cole equation in form of impedance. Comparing to the latter, the former is more adaptive to the electrical impedance scanning which using lower frequency region. When using our own electrical impedance scanning device at 50-5000 Hz, the measurement data separated on the arc of the former, while collected near the direct current resistor on the arc of the latter. The four parameters of the former can be evaluated by the least square method. The frequency of the imaginary part of admittance reaching maximum can be calculated by the Cole-Cole parameters. In conclusion, the Cole-Cole arc in form of admittance is more effective to multi-frequency data analysis at lower frequency region, like EIS
Keywords :
electric admittance; electric impedance imaging; least squares approximations; 50 to 5000 Hz; Cole-Cole arc equation; admittance; electrical impedance scanning; least square method; primary multifrequency data analysis; Admittance; Biomedical engineering; Biomedical imaging; Biomedical measurements; Breast; Data analysis; Electrodes; Equations; Frequency; Impedance;
Conference_Titel :
Engineering in Medicine and Biology Society, 2005. IEEE-EMBS 2005. 27th Annual International Conference of the
Conference_Location :
Shanghai
Print_ISBN :
0-7803-8741-4
DOI :
10.1109/IEMBS.2005.1616717
