ＭＲ扩散加权成像 (ｄｉｆｆｕｓｉｏｎ-ｗｅｉｇｈｔｅｄｉｍａｇｉｎｇ,ＤＷＩ)在急性脑梗塞的超早期诊断和颅内囊性病变的鉴别诊断方面具有重要的临床价值［１ ,２］。但扩散加权成像在颅内肿瘤的诊断方面却鲜有报道。我们自１９９９年１月至２００１年６月对６０例颅内各类 MR diffusion-weighted imaging (diffusion-weightedimaging, DWI) has important clinical value in the ultra-early diagnosis of acute cerebral infarction and the differential diagnosis of intracranial cystic lesions [1, 2]. However, diffusion-weighted imaging is rarely reported in the diagnosis of intracranial tumors. We have 60 cases of intracranial types from January 1999 to June 2001