电阻抗CT技术在人体上肢图象重建中的应用

Applications in Reconstructing Images of the Upper Limbs of Human Body Using Electrical Impedance Computed Tomography Techniques

人体实验是电阻抗CT技术应用于临床的重要研究课题之一。在研制了适用于人体上肢的环状无源 32 -电极系统的基础之上 ,对不同受试者的上臂和前臂作了多组测试工作。文中给出了电阻抗CT逆问题计算的数学模型和人体实验的结果。结果表明 :经过图象重建和处理后 ,基本符合人体上肢的解剖学特征 ,可以清晰地分辨出骨骼与肌肉组织。

Human body experiment is one of the key problems for the electrical impedance tomogryphy(EIT) in clinical meaning.In this paper an orbicular passive 32 electrode system which is suited for the upper limbs is developed,and the mathematical model for EIT to solve inverse problem is given.After testing many upper arms or forearms of persons, the author have reconstructed the images which are distinct to distinguish skeleton from muscle.