【摘要】 利用电阻抗成像技术 ,分别从一维阻抗测量、二维断层成像、三维立体成像等三个方面对颅内脑水肿、脑出血进行仿真研究 ,并对一维电阻抗成像进行了临床实验 ,同时还对电流的透颅效果进行了动物实验和仿真研究。研究结果表明 :低频电流能够穿过颅骨 ;从一维颅表测量的电阻抗变化 ,可以反映颅内出血和水肿的动态过程 ;利用二维电阻抗断层成像可以反映颅内出血的变化情况 ;三维电阻抗重建图像对目标定位准确 ,可以分辨出多个成像目标。以上研究结果为脑水肿与脑出血的图像实时监护奠定了理论基础 ,积累了临床实践经验。更多还原

【Abstract】 The imaging of hydrocephalus and cerebral hemorrhage has been studied by using Electrical Impedance Tomography (EIT) from one dimensional(1D),two dimensional(2D),and three dimensional(3D). Some clinical experiments about 1D EIT have been described. The penetrability of current to skull has been studied by numerical calculating and experiments on animal. The study results show that the low frequency current can penetrate through the skull. The impedance of 1D impedance measuring can reflect the dynamic process of hydrocephalus and cerebral hemorrhage. The change of cerebral hemorrhage also can be shown from the reconstructed imaging of 2D EIT. The reconstructed imaging of 3D EIT can locatd the object’s position in the field with a higher precise. From the reconstructed imaging, several objects can be differentiated.更多还原