【摘要】 电阻抗成像是一种新的无损伤的功能成像技术．采用模块化设计,建立一种基于物理模型的医学电阻抗成像硬件系统．该系统主要有恒流源模块、驱动模块、测量模块、信号处理模块、控制和成像模块组成．该系统通过测量被测目标表面电信号并进行分析和处理,再通过逆问题求解,重构出电阻抗分布图像．实验表明,该系统设计合理,工作稳定,具有实时检测、使用方便及扩展性强等特点．更多还原

【Abstract】 Electrical impedance tomography(EIT)is a new and non-invasive imaging technique.This paper presents a medical EIT system based on physical model using modularization design.This system consists of some modules including constant current source,driving,measuring,signal processing,controlling and ima- ging.The electrical impedance image can be reconstructed by solving the inverse problem through measuring surface voltage of measured object using this system.Experimental results show that this system is feasible,sta- ble,convenient and extended.更多还原