摘要
提出了一种组合小波域统计分析和空间相关性检验的方法来检测fMRI功能激活区域.该方法首先利用Ruttimann等提出的小波方法检测到激活体素,然后逐体素分析它们与其三维空间26-邻域体素血流动力学响应的相关性,并进行空间相关性检验来得到最终激活区域.实验结果表明:该方法是一种快速可靠的fMRI功能激活区域检测方法.
A method for identifying fMRI functional activation areas which combines statistical analysis in wavelet domain with testing spatial correlation is proposed. Firstly, the active voxels are tested by the wavelet method of Ruttimann, et al. Secondly, the method analyzes the correlation of hemodynamic responses between the tested active voxels and their 26- neighboring voxels. Finally, the activation areas are obtained by testing the spatial correlation. Experimental results prove that this method is fast and reliable to test the fMRI functional activation areas.
出处
《微电子学与计算机》
CSCD
北大核心
2008年第12期64-66,69,共4页
Microelectronics & Computer
基金
国家自然科学基金项目(60475021)
关键词
功能磁共振成像
小波变换
空间相关
functional magnetic resonance imaging
wavelet transform
spatial correlation
