多发性硬化CT·MRI诊断价值研究

Diagnostic Value Study of the Multiple Sclerosis Using CT·MRI Imagings

目的:探讨脑多发性硬化(MS)的CT、MRI的影像特征及其诊断价值。方法:搜集确诊的MS常规脑CT、MRI图像55例,分析其CT、MRI特点及T1WI低信号病灶于DWI图像信号特点。结果:155例CT扫描检查,有42例行增强扫描,阳性者30例,25例显示正常。12例双侧侧脑室旁白质、皮层下区以及半卵圆中心白质区为多发散的点片状低密度阴影;17例有结节状或环状轻、中度强化;1例脑萎缩。2MRI检查55例患者均为阳性。12例、早期和缓解期表现为T1WI上病灶中心呈低信号,T2WI和FLAIR病灶中心呈高信号。23急性期表现为T2WI上表圆形高信号,外周布以稍高信号带。17例出现胼胝体伴脑萎缩改变,T2WI见有斑点状高信号,T1WI见其下界呈锯齿状改变。3例发现视神经信号异常。结论:MRI和DWI能发现许多CT不能显示的病灶,MRI和DWI可反映出MS时间和空间多发性的特点,结合其相对特异的特点,在诊断MS方面有重要的临床指导意义。

Objective： To investigate the brain multiple sclerosis（MS） image characteristics and the diagnostic value of CT,MRI. Methods： MS findings of 55 cases of normal brain CT,MRI image diagnosis,analysis of the CT,MRI features and T1 WI low signal lesions on the characteristics of DWI image signal. Results： 155 patients underwent CT,42 cases underwent enhanced scan,30 cases were positive,25 cases showed normal. 12 cases of bilateral periventricular white matter,subcortical areas and white matter regions semi oval center is more divergence point sheet of low density shadows; 17 cases of nodular or cyclic light,moderate enhancement; 1 cases of cerebral atrophy. 2The MRI examination of 55 patients were positive. In 12 cases,early and remission stage performance for the T1 WI center of lesion showed low signal,T2 WI and FLAIR the center of the lesion showed high signal. 23 acute stage of performance for the T2 WI table round high signal,outside week with slightly high signal. In 17 cases with cerebral atrophy of corpus callosum,T2 WI saw a dot like high signal,T1 WI saw its lower bound serrated change. 3 cases were found abnormal optic nerve signal. Conclusion： MRI and DWI can be found in many CT cannot display the lesions,MRI and DWI can reflect the characteristics of the MS time and space multiple,combined with its relatively specific characteristics,has important clinical significance in the diagnosis of MS.