CAJ | 학술논문

本文提出一种融入颅骨电阻率非均匀分布信息的电阻抗断层成像方法.利用头部CT数据提供的解剖结构信息以及颅骨板障层厚度同颅骨电阻率的统计参数模型建立包含颅骨电阻率非均匀分布的头部二维有限元模型,并将模型引入阻尼最小二乘成像算法.初步仿真实验表明该方法提高了重构图像的质量和成像目标的定位精度.
본문제출일충융입로골전조솔비균균분포신식적전조항단층성상방법.이용두부CT수거제공적해부결구신식이급로골판장층후도동로골전조솔적통계삼수모형건립포함로골전조솔비균균분포적두부이유유한원모형,병장모형인입조니최소이승성상산법.초보방진실험표명해방법제고료중구도상적질량화성상목표적정위정도.
An electrical impedance tomography imaging method incorporated with inhomogeneously-distributed skull resistivity was put forward in the paper, which made use of the anatomical information segmented from brain CT as well as the statistical parameter model of the diploe thickness and skull resistivity to establish a two dimensional brain finite element model containing inhomogeneously-distributed skull resistivity. A novel damped least squares incorporated with this model was used for simulation studies. According to the preliminary simulation experimental results, this imaging method showed its effectiveness in improved quality of reconstructed images and enhanced positioning accuracy of the imaging target.