【摘要】 脑电图在医疗诊断中发挥了重要作用,能够快速纪录脑内神经元活动产生的电信号并能在屏幕上清晰地成像。针对16导联设备设计了一种脑电图成像系统,可以有效地支持二维脑电地形图和三维脑电旋转图的显示。对于二维脑电地形图采取了对时域信号的频域变换以及克里金空间插值方法进行填充绘制;对于三维脑电旋转地形图采取了反向映射到二维平面像素点的方法加以实现,该方法的成像效果清晰,并避免使用外部库文件,最后对导联设备增加以及产品的进一步功能发展所面临的挑战作了简要的分析。更多还原

【Abstract】 Electroencephalogram(EEG) plays an important role in physical examination,which can report the electrical signal of neuronal activities in the brain quickly and imaging clearly on the screen.In this paper we designed an EEG imaging system especially for 16 leads device.It can efficiently support the display of two-dimension brain electrical activity mapping and three-dimension brain electrical activity rotatory mapping.For two-dimension photograph,the frequency domain transforming on time domain signal and Kriging interpolation algorithm are employed for filling and drawing.For three dimensions photograph,inversely mapping onto two-dimension plane pixel points is adopted to realise it.The approach has clear imaging effect and is free from using external database files.At last brief discussion is given on the challenges the system is to face including additional leads devices and further development in production’s functions.更多还原