• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Conference on Biomedical Applications in Molecular, Structural, and Functional Imaging >Bipolar current injection methods for Electrical Impedance Tomography: a comparative study
【24h】

Bipolar current injection methods for Electrical Impedance Tomography: a comparative study

机译：电阻断层扫描的双极电流注射方法：比较研究

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A comparative study of different bipolar current injection methods viz. Adjacent method, Cross method and Opposite method used in Electrical Impedance Tomography(EIT) is reported in this paper. Different electrode configurations are considered for current injection and voltage measurement to identify the one which yields better signal strength. Sensitivity of different current injection methods to inhomogeneity at different locations is examined. The effect of conductivity contrast on boundary voltages is studied by varying the conductivity of the inhomogeneity from 0.01mS/cm to 9.1mS/cm. Ill-posedness of the inverse problem is analyzed in terms of condition number for the aforementioned methods. Reconstruction of two closely placed inhomogeneities is done using Levenberg Marquardt method for different current injection methods to compare the resolution and corresponding error voltage is determined. Experiments are conducted using agar phantoms to validate some of the results obtained from the simulations. Based on the simulation studies and experimental validations, cross method is found to be the optimal current injection method to attain better data acquisition and image reconstruction.
机译：不同双极注射方法的比较研究。本文报道了在电阻抗断层扫描（EIT）中使用的相邻方法，交叉方法和相反方法。考虑不同电极配置，用于电流注入和电压测量，以识别产生更好的信号强度的电压测量。检查不同当前注射方法对不同位置的不均匀性的敏感性。通过改变0.01ms / cm至9.1ms / cm的不均匀性的导电性来研究导电性对比度对边界电压的影响。在上述方法的条件号方面分析了逆问题的不良效果。使用Levenberg Marquardt方法进行两种紧密放置的不均匀性，用于比较分辨率和相应的误差电压来进行不同的电流注入方法。使用琼脂模拟进行实验，以验证从模拟中获得的一些结果。基于仿真研究和实验验证，发现交叉方法是实现更好的数据采集和图像重建的最佳电流注入方法。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号