Study on sweep-frequency electrical impedance tomography system
- VernacularTitle:扫频式电阻抗断层成像系统的研究
- Author:
Yi ZHAO
;
Ping WANG
;
Zhanlong ZHANG
;
Wei HE
- Publication Type:Journal Article
- Keywords:
sweep-frequency;
sweep-frequency electrical impedance tomography;
data acquisition system
- From:
Chinese Medical Equipment Journal
2004;0(07):-
- CountryChina
- Language:Chinese
-
Abstract:
The key technologies of sweep-frequency electrical impedance tomography system are presented in detail, which consist of the ones for the excitation signal source, constant current source, analog switch array and signal demodulation. A data acquisition system of sweep-frequency electrical impedance tomography based on high-speed composite-signal (ISP-FLASH) MCU is designed. High-speed composite-signal (ISP-FLASH) MCU is applied to electrode gating, data acquisition and data communication with PC. PC is adopted as the master computer to control inferior devices, receive measurement data and perform image reconstruction. The problem and possible way to develop the measurement system are also mentioned.
