颅内出血动态过程的电阻抗成像仿真研究

Study of Dynamic Electrical Impedance Tomography for Cerebral Hemorrhage

基于等位线反投影算法的动态电阻抗断层成像技术具有对目标定位准确,成像速度快,有一定的分辨率等优点。将该技术应用于颅内出血疾病的实时监测,及时反映颅内出血的变化情况,这在医学上有着重要意义。作为该技术应用于颅内出血实时监测的基础研究,本研究利用等位线反投影算法,仿真了动态电阻抗断层成像技术应用于颅内出血疾病实时监测过程。研究结果表明,动态电阻抗断层成像等位线反投影算法重建的图像可以反映颅内出血的变化情况,能够应用于颅内出血动态过程监护。

Dynamic electrical impedance tomography （EIT） based on equi-potential back-projection method can locate the object＇s position in the field with a high precision. The method can reconstruct the image fast and its resolution can be accepted. If this method is applied to the cerebral hemorrhage real time monitoring successfully so that the reconstructed image can show the changes of cerebral hemorrhage, this is very valuable in physic clinic. As the fundamental research of applying the technology to the cerebral hemorrhage real time monitoring, we simulate the change process of cerebral hemorrhage based on the technology of dynamic electrical impedance tomography. The results show that the changes of cerebral hemorrhage can be reflected by the images reconstructed by the method of equi-potential back-projection, electrical impedance tomography can be applied to monitor the changes of the cerebral hemorrhage.