增加ECT系统投影数据的方法研究

摘要

Due to the number limit of electrodes,the current resolution ratio is low in ECT system,If the number of electrode plates should be increased,the plate area would inevitably be reduced,so that the Signal to Noise Ratio (SNR) of the system is reduced.In this paper,a combination of capacitor electrode array in the ECT system is established by subdividing the electrodes and combining the plates.In this way,the projection data is increased to improve the accuracy of the reconstructed image.%由于受到电极极板数目的限制,目前电容层析成像系统的成像精度不高.如果要增加系统极板的数目,就需减小每块极板的面积,而这样做会降低系统的信噪比.通过细分、组合极板的方法,建立电容层析成像系统组合电容极板阵列.此方法增加了投影数据,提高了重建图像的精度.