MR DWI序列对脑弥漫性轴索损伤的诊断价值研究  

Value of imaging diagnosis of MRI DWI sequence in patients with diffuse axonal injury

作　　者：刘光裕[1] 张鲁临 张小鹏[1] 王波[1] 黄鹏[1] 景元河 王昭强 

机构地区：[1]山东省警官总医院放射科,山东济南250002 [2]山东省荣成市第二人民医院放射科,山东荣成264309

出　　处：《医学影像学杂志》2012年第11期1816-1817,共2页Journal of Medical Imaging

摘　　要：目的探讨MRI对脑弥漫性轴索损伤的的诊断价值。方法对经临床确诊的36例DAI患者行常规MRI快速自旋回波(TSE)T2WI、流动衰减反转恢复序列(FLAIR)和扩散加权成像(DWI)序列扫描,比较各序列的病灶显示率。结果 DWI序列的阳性率为91.67%(33/36),TSE T2WI序列的阳性率为77.78%(28/36),FLAIR序列的阳性率为83.33%(30/36),DWI序列阳性率明显高于TSE T2WI序列(P<0.05)和FLAIR序列(P<0.05)。结论应用DWI序列对急性DAI较TSE T2WI和FLAIR序列有更高的敏感性。Objective To investigate the value of MRI DWI sequence in patients with diffuse axonal injury. Methods Thirty-six patients with diffuse axonal injury were examined with diffusion-weighted MR imaging, fluid-attenuated inver- sion recovery and T2-weighted fast spin-echo. The positive rate of lesions from each sequence was compared. Results The positive rates of DWI, TSE T2WI and FLAIR were 91. 67% （33/36）, 77.78% （28/36）and 83.33% （30/36）, respective- ly. The positive rate of DWI was higher than that of TSE T2WI （ P 〈0.05） and FLAIR （ P〈0.05）. Conclusion The sensitivity of DWI for dignosis of DAI was higher than the other sequences.

关 键 词：脑 弥漫性轴索损伤 磁共振成像 

分 类 号：R445.2[医药卫生—影像医学与核医学] R742[医药卫生—诊断学]