磁共振成像的高空间分辨率能客观反映脑的解剖、生理和代谢情况 ,是诊断缺血性脑卒中的最佳成像方法。尤其近年来一些新技术 ,包括弥散加权成像 (ｄｉｆｆｕｓｉｏｎｗｅｉｇｈｔｅｄｉｍａｇｉｎｇ ,ＤＷＩ)、灌注加权成像 (ｐｅｒｆｕｓｉｏｎｗｅｉｇｈｔｅｄｉｍａｇｉｎｇ High spatial resolution of magnetic resonance imaging can objectively reflect the anatomy, physiology and metabolism of the brain, is the best imaging method for diagnosis of ischemic stroke. Especially in recent years, some new technologies, including diffusion weighted imaging (diffusionweightedimaging, DWI), perfusionweightedimaging