目的通过２６例超急性期脑卒中病例，观察和分析脑梗塞与脑出血的ＭＲ表现及诊断要点。方法２６例在低场强机器作常规横断ＳＥ序列Ｔ１ＷＩ和Ｔ２ＷＩ扫描。结果脑梗塞为Ｔ１ＷＩ稍低信号、Ｔ２ＷＩ高信号；脑出血为Ｔ１ＷＩ稍高至更高信号，Ｔ２ＷＩ高至等偏高信号，周围有Ｔ１ＷＩ低、Ｔ２ＷＩ高信号水肿带。结论超急性期脑梗塞与脑出血各具不同的信号形式，能较好鉴别，可选择性使用ＭＲＩ进行检查。 Objective To observe and analyze the MR findings and diagnosis points of cerebral infarction and cerebral hemorrhage in 26 cases of hyperacute stroke. Methods Twenty-six patients underwent routine transection SE sequence T1WI and T2WI scanning on low-field machines. Results Cerebral infarction was slightly lower signal of T1WI and high signal of T2WI. Cerebral hemorrhage was slightly higher to higher signal of T1WI and high to high signal of T2WI. There was high T1WI and high signal edema zone around T2WI. Conclusions The hyperacute cerebral infarction and intracerebral hemorrhage have different signal forms, which can be distinguished better and can be selectively examined by MRI.