摘要
目的探讨急慢性颈髓损伤磁共振扩散加权成像(DWI)的特点及其临床应用价值。方法对临床诊断为脊髓型颈椎病患者38例(CSM组)、急性颈髓外伤患者16例(外伤组)以及正常健康志愿者15例(对照组)采用单次激发自旋回波-平面回波序列行颈髄DWI检查,分析各例DWI图像特点,测量表观扩散系数(ADC)值。结果 CSM组:38例中T2WI颈髓出现高信号者20例,颈髓受压部位ADC值表现异常者30例(78.9%),其中27例ADC值高于正常组ADC值,3例ADC值降低,DWI图像表现为低信号或等信号;外伤组16例中ADC值表现异常者为14例(87.5%),10例常规T2WI颈髓受伤部位出现局限性异常信号,呈高信号或混杂信号,损伤部位ADC值有明显降低,DWI表现为高或混杂信号,6例T2WI及DWI信号无改变者,4例损伤部位ADC值降低。两组ADC值与正常对照组比较均有统计学差异。结论 CSM组和外伤组DWI成像ADC值有不同变化,判断脊髓病变较常规T2WI具有更高的敏感性,对临床诊断及预后判断有较高价值。
Objective To study the characteristics and the clinical value of diffusion-weighted imaging （DWI） in spinal cord injury patients. Methods Cervical MRI and ssh-EPI-DWI were performed in three groups, i.e. cervical spondylotic myelopathy （CSM） group （n = 38）, acute cervical cord trauma group （n = 16） and healthy control group （n = 15 ）. The features of DWI were ana- lyzed and the ADC values were calculated at the same time. Results In the CSM group, 30 （78.9%） patients were found abnormal in ADC values, increasing in 27 and decreasing in 3 ones, high signal lesions in 20 cases, （hypointensity or isointensity local lesions showed on DWI）. In the traumatic group, 10 patients with heterogeneous high signal lesions on T2WI, showed significantly low ADC values, and the other 6 patients were normal in T2WI but 4 of them had low ADC values. So, there were 14 （87.5%） patients with abnormal ADC values in 16 cases of acute cervical cord trauma group. Conclusion Different features show on DWI among patients with chronic and acute spinal cord injury. DWI has high value in clinical practice because of its high sensitivity.
出处
《临床军医杂志》
CAS
2014年第7期739-741,748,共4页
Clinical Journal of Medical Officers
关键词
扩散加权成像
磁共振成像
脊髓病变
diffusion weighted imaging
magnetic resonance imaging
spinal cord lesion
