基于扩散磁共振的大脑浅表白质纤维束研究进展

孟靖欣, 王远军

Research Progress on Tractography of Superficial White Matter Based on Diffusion Magnetic Resonance Imaging

MENG Jingxin, WANG Yuanjun

图3 SWM纤维束图谱构建流程. (a)预处理：去噪和去除吉布斯环伪影，头动校正和涡流校正，偏置场校正，配准到标准空间；(b)全脑纤维束追踪：确定性追踪算法或概率性追踪算法；(c)全脑纤维束滤波：纤维长度滤波、纤维平滑滤波、DWM束滤波；(d) SWM纤维束聚类：使用不同聚类方法进行SWM纤维束聚类，通过不同皮质分区进行标记；(e) SWM纤维束图谱

Fig. 3 SWM fiber tract atlas construction process. (a) Preprocessing: denoising and removal of Gibbs ring artifacts, head motion correction and eddy current correction, bias field correction, alignment to standard space; (b) whole brain tractography: deterministic tractography algorithm or probabilistic tractography algorithm; (c) whole brain fiber tract filtering: fiber tract length filtering, fiber tract smoothing filtering, DWM tract filtering; (d) SWM fiber tract clustering: SWM fiber tract clustering using different clustering methods, labeling by different cortical partitions; (e) SWM fiber tract atlas