Title :
In-vivo coordinate measurement based on electric field location system
Author :
Chen, Zhongzhong ; Su, Zhijian ; Zheng, Wei ; Xia, Zhenhong
Author_Institution :
Sch. of Mech. Eng., Zhengzhou Univ., Zhengzhou, China
Abstract :
Based on external electric field, the potential distribution of homogeneous medium is analyzed for measuring in-vivo coordination. According to various electrical impedance models, corresponding regularity of electric potential gradient within constant electric field is researched. The algorithm procedure for spatial location measurement is developed accurately by using Fast Fourier Transform. Through experimental results, it can be concluded that the maximum deviation and dimensional relative error are all in allowable level. This method can provide proper registration accuracy for in-vivo coordinates measurement. Furthermore, it can provide technical support for endocardial three-dimensional mapping.
Keywords :
bioelectric potentials; biomedical measurement; electric impedance imaging; fast Fourier transforms; medical image processing; dimensional relative error; electric field location system; electric potential gradient; electrical impedance; endocardial three-dimensional mapping; fast Fourier transform; in vivo coordinate measurement; maximum deviation; registration accuracy; spatial location measurement; Catheters; Coordinate measuring machines; Electric fields; Electric variables measurement; Position measurement; Probes; Three dimensional displays; component; coordinates measurement; electric field; error correction;
Conference_Titel :
Biomedical Engineering and Informatics (BMEI), 2010 3rd International Conference on
Conference_Location :
Yantai
Print_ISBN :
978-1-4244-6495-1
DOI :
10.1109/BMEI.2010.5640036
