磁共振DTI技术在急性缺血性脑梗死中的临床应用  

The Clinical Application of Magnetic Resonance DTI Technology in Acute Ischemic Cerebral Infarction

作　　者：常冬梅 王鑫[2] 马臻雏 

机构地区：[1]苏州市中西医结合医院影像科,苏州215101 [2]苏州大学附属第二医院放射科,苏州215004

出　　处：《影像技术》2017年第5期21-23,共3页Image Technology

摘　　要：目的:评价磁共振弥散张量成像(DTI)在超急性和急性缺血性脑梗死鉴别诊断中的临床应用价值。方法:回顾分析我院11例超急性期和15例急性期单侧缺血性脑梗死患者的DTI图像。在DTI序列各项异性指数(FA)、平均弥散系数(MD)图上选取病灶感兴趣区(ROI)并镜像生成对侧ROI,记录FA和MD值以及相对值。比较FA和MD在病灶与镜像对侧间的差异,分析两组间FA和MD相对值的差异。结果:超急性和急性组梗死病灶MD值均低于镜像对侧,FA值仅在急性期低于对侧(P<0.05)。超急性期梗死病灶FA相对值和MD相对值均高于急性期(P<0.05)。结论:急性脑梗死导致FA和MD值降低,且FA相对值和MD相对值在两组中存在差异,临床可运用于鉴别超急性和急性缺血性脑梗死,从而有利于选择合理的治疗方案。Objective： To evaluate the clinical application value of magnetic resonance diffusion tensor imaging（DTI） in differential diagnosis of hyper-acute and acute ischemic cerebral infarction.Methods： To retrospective analysis DTI images of 11 patients with hyper-acute and 15 patients with acute unilateral ischemic cerebral infarction. Set the regions of interest（ROI） on fractional anisotropy（FA） and mean diffusion coefficient（MD） images of DTI and generate the contralateral ROI, record the FA and MD values and relative values. Compare the differences of FA and MD between lesions and contra, analysis the differences of relative FA and MD between two groups. Results： The MD value of hyper-acute and acute infarction lesions were lower than contra, the FA values was lower than contra only in acute phase（P〈0.05）. The relative FA and relative MD values of hyper-acute infarction were higher than that of acute infarction（P〈0.05）. Conclusion： Acute cerebral infarction made the FA and the MD value reduced, and the relative FA and MD had the differences between two groups, which could be applied to identify hyper-acute and acute ischemic cerebral infarction in clinic and was helpful to choose reasonable treatment program.

关 键 词：磁共振 弥散张量成像 缺血性脑梗死 

分 类 号：R445.2[医药卫生—影像医学与核医学] R743[医药卫生—诊断学]