MR弥散加权成像对AICA与PICA梗死的诊断价值

目的：探讨MRI在小脑前下动脉(AICA)与小脑后下动脉(PICA)供血区梗死的诊断及鉴别诊断价值。方法：搜集临床确诊的AICA供血区梗死5例和PICA供血区梗死7例．临床表现为典型或部分的AICA综合征与PICA综合征．全部行MRI检查．包括SE、FLAIR和DWI序列。结果：MRI可以良好显示AICA和PICA供血区梗死的部位与形态．其中DWI序列具有更佳的敏感性和特异性．通过与SE／FLAIR序列的对照,有助于确定病变范围和鉴别病灶的新鲜程度。结论：MR弥散加权成像可以帮助;住确地诊断和鉴别AICA与PICA供血区梗死,为临床诊治提供依据。

The diagnostic value of MR diffusion weighted imaging on infarction of AICA and PICA

Objective:To discuss the diagnostic value of MR diffusion weighted imaging on infarction of anterior inferior cerebellar artery (AICA) and posterior inferior cerebellar artery (PICA).Methods:We retrospectively analyzed five cases of AICA infarction and seven cases of PICA infarction.All patients presented typical or partial syndrome of AICA and PICA. All of them underwent MR examination including spin echo (SE) sequence and diffusion weighted imaging (DWI) sequence,in some of them a fluid attenuated inversion recovery (FLAIR) sequence was added.Results:MRI played a good role in displaying the location and shape of AICA infarction and PICA infarction.Especially,DWI sequence showed higher sensitivity and specifity in displaying the lesions than conventional sequences.Compared with SE/FLAIR sequence,DWI could better determine the area and development of lesions.Conclusion:DWI can help diagnose and differentiate the infarction of AICA and PICA,this will be benefit for clinical therapy.