用于肺功能检测的生物电阻抗断层成像系统(英文)  

The System of Bio-electrical Impedance Tomography for Detecting Lung Function

作　　者：秦明新[1] 董秀珍[1] 尤富生[1] 史学涛[1] 付峰[1] 汤孟兴[1] 刘锐岗[1] 

机构地区：[1]陕西西安第四军医大学生物医学工程系,710033

出　　处：《CT理论与应用研究（中英文）》2000年第z1期133-137,共3页Computerized Tomography Theory and Applications

摘　　要：介绍了一种对人体内电阻抗分布进厅成像的医学成像系统，并将其应用于肺通气的观察。该系统采用３２体表电极进行阻抗测量，用加权反投影算法进行图象重构。文中给出了恒流源、测量电路、控制电路的设计和重构方法研究。同时，得到了一些初步的在体实验结果。An imaging system is described which produces images of the electrical im pedance distribution within the body, allowing lung ventilation to be observed. The system makes impedance measurements using an array of 32 electrodes on the surface of the body; and reconstructs the images using a weighted backprojection algorithm. The design of the constant source, the measurement circuit, the controlling circuit and the reconstruction are described. Some preliminary in vitro and in vivo results from the system are presented.

关 键 词：电阻抗成像 数据采集系统 图象重构算法 肺 

分 类 号：R816.4[医药卫生—放射医学]