急性弥漫性轴索损伤CT与MRI对比的研究

Comparative Study of CT and MR Imaging in Acute Diffuse Axon Injury

目的:比较急性弥漫性轴索损伤患者CT及MRI表现的不同。方法:选取60例急性弥漫性轴索损伤患者,而CT无异常改变或改变轻微的病例行MRI检查。全部检查均在损伤后6天内完成。GCS评分＜8分44例,9—12分16例。结果:MRI显示具有DAI损伤表现的共41例,阳性率68．3%,其中单独具有DAIⅠ、Ⅱ和Ⅲ型损伤表现的分别为7例、12例和1例,同时具有DAIⅠ和Ⅱ型损伤表现的共12例,同时具有DAJⅠ和Ⅲ型损伤表现的共2例,同时具有DAJⅡ和Ⅲ型损伤表现的共2例,同时具有三型DAI损伤表现的共5例;CT显示具有DAI损伤表现的共3例,阳性率5．0%,其中具有DAIⅠ型损伤表现的2例,具有DAIⅡ型损伤表现的1例,具有DAIⅢ型损伤表现的0例。结论:CT缺乏异常表现或轻微异常表现的急性弥漫性轴索损伤,MRI常常能显示损伤,包括特殊的损伤部位和一些其他类型合并损伤。

Objective： To compare the differences between MRI and CT findings in patients with acute diffuse axon injury （ADAI）, Methods： 60 patients with ADAI, without abnormal CT or with slight CT findings, were selected to receive MRI examination within 6 days after injury. According to the Glasgow Coma Scale （GCS）, 44 patients suffered from severe head injury （GCS〈8） and 16 patients moderate head injury （GCS 9-12）. Results： MRI Showed that 41 patientshad DAI （the positive rate, 68.3%）,Of the 41 patients, 7 had DAI of type Ⅰ; 12, type Ⅱ; 1, type Ⅲ; 12, type Ⅰ and Ⅱ; 2,type Ⅰ and Ⅲ; 2, type Ⅱ and Ⅲ; 5, type Ⅰ, Ⅱ, Ⅲ. CT showed that 3 patients had DM（the positive rate, 5.0%）. Among the 3 patients,2 patients had DM of type Ⅰ; 1, type Ⅱ. Conclusion： Abnormality or slight abnormality of ADAI is not easily found in CT, but MRI can usually show injuries,including special injury regions and some other complicated injuries.