T2 FLAIR大脑中动脉高信号血管征在急性期和亚急性期脑梗死的诊断价值

The Significance of The Hyperintense Middle Cerebral Artery Sign on MR T2 FLAIR in Acute and Subacute Cerebral Infarction

目的探讨急性期和亚急性期脑梗死T2 FLAIR大脑中动脉高信号血管征的诊断价值。方法回顾性分析2015年6月至2019年6月本院确诊大脑中动脉供血区急性期和亚急性期脑梗死56例患者的影像及临床资料。同时设立对照组,收集本院同期健康成人和非脑梗死脑病者15例影像学资料。所有病例均行T1WI、T2WI、T2 FLAIR及DWI检查。观察所有患者大脑中动脉高血管征、脑梗死范围(受累脑叶)及受累肢体肌力等级。结果对照组T2 FLAIR均未见HVS。56例脑梗死患者中35例HVS阳性,21例HVS阴性。HVS阳性患者脑梗死范围为(3.09±0.87),HVS阴性患者脑梗死范围为(1.57±0.68),两组差别具有统计学意义(P值<0.01)。入院查体HVS阳性患者的肢体张力明显低于HVS阴性患者,有统计学意义(Z值为-2.838,P值为0.005)。结论 HVS是急性期及亚急性期脑梗死的重要影像学特征,有助于对病情及预后的判断。

Objective To explore the diagnostic value of the hyperintense vessel sign(HVS) of middle cerebral artery on T2 FLAIR. Methods In the study, there were 56 patients with acute and subacute cerebral infarction in middle cerebral artery territory from June 2015 to June 2019. In the same period, 15 patients with no acute and subacute cerebral infarction in middle cerebral artery territory were enrolled to observe whether HVS appeared. All of them were undergone T1WI、T2WI、T2 FLAIR and DWI. HVS sign were observed on T2 FLAIR. The extent of cerebral infarction, the muscular tension of limbs were compared. Results There were no HVS signs in 15 patients without cerebral infarction. HVS appeared in 35 of 56 patients with cerebral infarction, 21 patients were negative for HVS. The mean infarction size was(3.09±0.87) lobes in positive HVS group and(1.57±0.68) in negative. There was significantly different between HVS group and no HVS group of patients with cerebral infarction(P<0.01). The muscular tension of patients in positive was lower than the negative group(Z=-2.838, P=0.005). Conclusion T2 FLAIR HVS is an important imaging feature of acute and subacute cerebral infarction. It is helpful to judge the disease condition and prognosis.