Diffuse type accounted for 56.25%,in which the lesions were diffuse hypo-intensity with clear border on T1WI and hyper-intensity with indistinct border or iso-intensity on T2WI.

• 弥漫型；9例(56.；25%25)；T1WI病灶呈弥漫性低信号；边界较清楚；T2WI呈稍高信号或等信号；边界欠清;