关键词: 电阻抗断层图像;功能成像;参数成像;频谱成像;三维成像

    摘 要: 电阻抗断层图像技术是继形态、结构成像之后出现的新一代功能成像技术.在多个临床领域，阻抗断层成像与现有方法相比具有明显优势.作者综述功能成像，虚部成像、参数成像、频谱成像和三维成像等EIT技术的新发展.

    Development of electrical impedance tomography

    AN Yuan，REN Chao-Shi

    Institute of Biomedical Engineering，Peking Union Medical College，Chinese Academy of Medical Sci-ences，Tianjin300192，China

    Keywords:electrical impedance tomography;functional imaging;parametric imaging;spectroscopic imaging;3D imaging

    Abstract:Electrical impedance tomography is a new genera-tion of functional imaging developed in recent ten or more years after the morphology and structure imaging technolo-gy.It suggests that EIT could offer significant advantages over existing methods in the areas of clinical medicine.This paper reviews some new techniques including the functional imaging，the imaginary imaging，the parametric imaging，the spectroscopic imaging，and3D imaging.

     0 引言

    电阻抗断层图像技术(electrical impedance tomog-raphy，EIT)是当今生物医学工程学重大研究课题之一.它是继形态、结构成像之后，于近20a才出现的新一代更为有效的无损伤功能成像技术.EIT通过配置于人体体表的电极阵，提取与人体生理、病理状态相关的组织或器官的电特性信息，不但反映了解剖学结构 ......