摘要
目的:探讨MR磁化率与血肿周围水肿(PHBE)间的相关性。方法:52例脑实质内出血的患者分别于发病后第3、10d进行常规MRI及磁量图(QSM)检查。在QSM上计算血肿的平均磁化率,同时在T2FLAIR图上测量PHBE体积,采用Pearson统计分析血肿磁化率与PHBE体积间的相关性。结果:血肿第3d的平均磁化率为(4794.6±420.4)ppm,PHBE体积为(7.49±3.12)mL,两者间存在显著相关性(r=0.974,P<0.001);第10d的平均磁化率为(7388.6±3589.2)ppm,PHBE体积为(11.23±3.79)mL,两者间亦存在显著相关性(r=0.901,P<0.001)。结论:采用MR磁化率计量血肿内铁离子含量对观察PHBE的演变有一定帮助。
Objective：To investigate the relationship between MR susceptibility and perihematomal brain edema （PH- BE） in cerebral hemorrhage. Methods： Fifty-two patients who had intracerebral hemorrhage in parenchyma were selected. MRI and quantitative susceptibility mapping （QSM） scan were performed on the 3rd and 10th day after onset. The MR susceptibility of hemorrhage was calculated in QSM, and PHBE was measured in T;-FLAIR imaging. Pearson statistical method was used to analyze the relationship between MR susceptibility and PHBE. Results： The average MR susceptibility of hemorrhage was （4794.6±420.4）ppm and PHBE was （7.49±3.12）mL on the third day. The correlation between them was significant （r= 0. 974, P〈0. 001）. On the 10th day, the average MR susceptibility was （7388.6±3589.2）ppm and PH- BE was （ 11.23 ± 3.79） mL. The correlation was significant （r = 0.901, P〈0. 001）. Conclusion： The release of iron ions from the blood after being dissolved is likely to be an important part in the formation of PHBE. From this point, MR susceptibility measurement of iron content in hematoma is of help is observing PHBE process.
出处
《放射学实践》
北大核心
2015年第2期124-126,共3页
Radiologic Practice
基金
上海市科委基础处重点攻关项目(10JC1414600)
关键词
血肿
颅内
脑水肿
磁化率
铁离子
磁共振成像
Hematoma,intracranial
Brain edema
Magnetic susceptibility
Iron ion
Magnetic resonance imaging
