MRI磁敏感加权成像(SWI)在脑出血中的应用价值分析

MRI Magnetic Sensitive Weighted Imaging(SWI) in Cerebral Hemorrhage,the Application of Value Analysis

目的探讨MRI磁敏感加权成像(SWI)在脑出血中的应用价值。方法对32例经CT确诊的脑出血患者分别进行MRI常规序列及SWI扫描,并对各序列的出血灶显示率、微出血灶的检出率和分布进行评估。结果在32例脑出血患者中,共发现75处出血灶。常规MRI(T1WI和T2WI)、Flair和SWI序列对脑出血患者检出的阳性率分别为28.13%、65.63%和100%,而对出血灶的检出率分别为30.67%、45.33%和100%。SWI序列的阳性率和检出率均显著高于MRI其他常规序列(均P<0.05)。13例患者在SWI序列上发现微出血灶,其中基底节25处,小脑5处,脑干5处,丘脑3处,大脑皮质下3处。结论 SWI序列比常规MRI序列对显示脑出血更敏感,有很好的临床应用价值,且对临床治疗有重要指导意义。

Objective To approach the applicate value of MRI susceptibility weighted imaging（SWI） on intracerebral hemorrhage（ICH）. Methods Thirty-two ICH patients diagnosed by CT were examined by conventional MRI sequence and SWI scan. The display rate of lesion, distribution of cerebral microbleeds and volume of hemorrhage were evaluated according to those examinations. Results Seventy-five hemorrhagic focus were found out in 32 ICH patients. The positive rate of patients by MRI（TlWI and T2WI）, Flair, SWI was 28.13%、65.63%、100%, respectively. And the relevance rate of ICH was 30.67%、45.33%and 100%.The positive rate and relevance rate by SWI was significantly higher than the other MR sequences（all P〈0.05）. The cerebral micmbleed lesions were found in 13 eases by SWI, and there were 25 cerebral micmbleeds in basal ganglia area, 5 in cerebella, 5 in brain stem, 3 in thalamus, 3 in cerebral codex. Conclusion SWI sequence is more sensitive than conventional MRI sequences to show intracerebral hemorrhage（ICH）.There is great value for SWI in clinical application, and it is also a very important guide for clinical treatment.