磁共振弥散加权成像(DWI)在急性脑缺血中的诊断价值  

MRI Diffusion Weighted Imaging:Diagnostic Value of Acute Cerebral Ischemia

作　　者：刘智勇[1] 额尔敦朝鲁[1] 敖淑云[1] 商朝[1] 周东哲[1] 张秀芳[1] 贾秀杰[1] 周铁宝[1] 龚金山[1] 其木格[1] 

机构地区：[1]内蒙古民族大学附属医院,内蒙古通辽028000

出　　处：《内蒙古民族大学学报（自然科学版）》2006年第5期559-562,共4页Journal of Inner Mongolia Minzu University：Natural Sciences

基　　金：内蒙古卫生厅医疗卫生科研基金资助项目(2005051)

摘　　要：目的：探讨磁共振弥散加权成像（DWI）在急性脑缺血中的诊断价值．方法：对50例急性脑缺血患者的常规的MRI、液体衰减翻转恢复（Flair）和DWI图像进行比较研究分析．结果：50例患者经DWI扫描，均可发现梗塞灶，病灶检出率为100％，而15例发病在6h以内的超急性脑梗塞患者中，常规MR扫描T2WI上只有1例有轻微改变，而DWI均可显影；在35例发病在6～24h以内的急性脑梗塞患者中，T2WI上可逐渐显示病灶，但DWI显影更为清晰，显示病灶的范围也大于T2WI上的病灶．结论：DWI对诊断急性脑缺血十分敏感，能对急性脑缺血做出明确诊断．Objective： To investigate the diagnostic value of MRI diffusion weighted imaging in the acute cerebral ischemia. Methods：50 case of acute cerebral ischemia patients were analyzed in this study in regular MRI,Flair and DWI imaging. Result： 50 patients scanned with DWI were diagnosed infarction focal and diagnosis rate is 100 %. Among 15 superacute cerebral infarction patients diagnosed in DWI, only 1patients were diagnosed in routine T2WI MR scanning; other 35 acute cerebral infarction patients with acute infarction DWI MR image, focal was showed gradually and focal area was longer than in routine T2WI MR image. Conclusion：DWI was very sensitivity in diagnosing acute cerebral ischemia.

关 键 词：磁共振成像 弥散加权成像 超急性脑梗塞 急性脑梗塞 诊断价值 

分 类 号：R814.42[医药卫生—影像医学与核医学]