沈阳工业大学学报2012，Vol.34Issue(5)：542-548,7.
12极板直接三维ECT图像重建仿真
Simulation for direct 3D ECT image reconstruction based on 12 electrode plates
摘要
Abstract
In order to overcome the disadvantage of low axial resolution capability in the indirect 3D ECT system,a direct 3D ECT reconstruction technique was developed.12 electrode plates were arranged in three layers with a relative rotation of 45° between electrod plates in adjacent layers.The capacitance values of electrode plate pairs both in the same layer and in the different layers were measured.Then the 3D images were directly generated in the reconstruction process,and were obviously different from the indirect 3D reconstruction images obtained with 2D tomograms.The 3D finite element model for the sensor was established,and the 3D sensitivity field of the sensor was analyzed.The linear back projection algorithm,the 3D sensitivity matrix and capacitance measurement simulation data obtained with the finite element analysis method were used to realize the direct 3D ECT image reconstruction.The reconstruction results indicate that the direct 3D ECT exhibits good axial resolution capability.关键词
ECT系统/传感器结构/直接三维图像重建/线性反投影/有限元分析/敏感场/轴向分辨力/仿真研究Key words
ECT system/sensor structure/direct 3D image reconstruction/linear back projection/finite element analysis/sensitivity field/axial resolution capability/simulation research分类
信息技术与安全科学引用本文复制引用
颜华,宁秀坤,王伊凡,周英钢..12极板直接三维ECT图像重建仿真[J].沈阳工业大学学报,2012,34(5):542-548,7.基金项目
国家自然科学基金资助项目 （）
辽宁省教育厅创新团队资助项目 （）
沈阳市科技计划项目 （）
