生物组织的磁感应断层成像研究  

Research on Magnetic Induction Tomography of Biological Tissues

作　　者：刘锐岗[1] 刘润生[1] 董秀珍[2] 

机构地区：[1]第四军医大学生物医学工程系医学图像学教研室,陕西西安710032 [2]第四军医大学生物医学工程系医学电子工程教研室,陕西西安710032

出　　处：《中国医疗设备》2015年第8期5-8,共4页China Medical Devices

基　　金：国家自然科学基金(61271101);全军医学科研"十二五"项目(BWS11Z011)

摘　　要：目的研究磁感应断层成像技术对生物组织的检测能力。方法利用16通道磁感应断层成像数据采集系统对空气背景中的鸡蛋、油桃,以及3层含颅骨脑部物理模型中的离体脂肪、离体血液分别进行检测,并应用时间差分牛顿莱夫逊成像算法获得电导率分布变化量的重建图像。结果对于分布在不同位置的单个或两个电导率扰动目标,差分成像结果都可以正确反映扰动目标的位置、相对大小和电导率差异情况。结论磁感应断层成像技术可以用于生物组织的电导率分布变化成像。Objective To study the detectability of magnetic induction tomography for biological tissues. Methods The 16-channel magnetic induction tomography system was used as the data acquisition system; and the time-difference Newton-Raphan method was adopted as the reconstruction algorithm. The imaging objects were the egg or nectarine in air as well as in vitro fat and blood in the three-layer brain physical phantom. Results For single or two conductivity perturbation objects at multiple positions, the reconstructed images could reveal the correct position, relative size, and conductivity difference. Conclusion It was feasible to detect the biological tissue using magnetic induction tomography.

关 键 词：磁感应断层成像 生物组织 物理模型 差分成像 

分 类 号：R318[医药卫生—生物医学工程]