Results The segmentation method put forth by this paper can correctly separate brain structure in the image preprocessing step, and then the WM, GM and CSF can be segmented better by the K-NN rule.

• 结果分割算法在预处理步中能精确地分割出大脑结构，在K-NN分割步中能很好地从大脑结构中分割出WM、GM和CSF。