Chinese Journal of Tissue Engineering Research ›› 2011, Vol. 15 ›› Issue (26): 4850-4853.doi: 10.3969/j.issn.1673-8225.2011.26.025

Previous Articles     Next Articles

Signal processing in endocardial mapping system

Chen Zhong-zhong1, Zhu Jiao-ying1, Su Zhi-jian1, Xia Zhen-hong2   

  1. 1School of Mechanical Engineering, Zhengzhou University, Zhengzhou  450001, Henan Province, China
    2Henan Huanan Medical Science and Technology Co., Ltd., Zhengzhou  450001, Henan Province, China
  • Received:2011-01-19 Revised:2011-02-18 Online:2011-06-25 Published:2011-06-25
  • About author:Chen Zhong-zhong☆, Doctor, Associate professor, Master’s supervisor, School of Mechanical Engineering, Zhengzhou University, Zhengzhou 450001, Henan Province, China zzchen@zzu.edu.cn

PDF

365

Abstract:

BACKGROUND: Signal processing is one of the key technologies in endocardial mapping by using ordinary catheter, it must be designed base on its characteristics, but, excessive noise can not be eliminated through traditional methods.
OBJECTIVE: To stimulate in vitro experiment and signal processing of endocardial mapping system.
METHODS: Noise was reduced partly by using a developed voltage controlled constant current source device, and then experiment data were processed with digital signal processing tool of MATLAB. The signal processing including bandpass, extract envelope, wavelet denoising and median filtering; finally, distances were calculated and compared with actual values.
RESULTS AND CONCLUSION: It shows that this process effectually reduces external noise and the interference of breath and heartbeat, and the relative error of mapping vectors is less than 7%. It proved that this process can be used in endocardial mapping system.

CLC Number: