摘要
目的:探讨脊髓前动脉综合征的病因、发病机制和MRI表现特点。方法:回顾性分析11例脊髓前动脉综合征患者的临床资料和MRI表现。结果:11例在MRI矢状面图像上均表现为范围不一的脊髓腹侧T2WI高信号灶,FLAIR图像上呈高信号,边界较清楚,其中T1WI上7例呈低信号,4例无信号改变;横轴面图像上3例可见典型的脊髓前角圆形病灶,呈"鹰眼征"。病灶位于颈段1例(1/11),胸段4例(4/11),颈胸结合段3例(3/11),胸腰结合段3例(3/11)。2例同时显示颈椎病和椎管狭窄,2例显示主动脉夹层,1例合并椎管内血管畸形。结论:脊髓前动脉综合征的MRI表现具有一定特征性,MRI对明确诊断以及病因判断有重要的临床应用价值。
Objective:To study the etiology,pathogenesis and MRI features of anterior spinal artery syndrome.Methods:Eleven cases of anterior spinal artery syndrome were recruited to retrospectively analyze the clinical data and MRI features.Results:All cases of anterior spinal artery syndrome showed different-sized high signals with rather clear border in ventral aspect of spinal cord on sagital T2WI and FLAIR sequences of MRI,including 7 cases of low signal and 4 without signal change on T1WI.3 cases showed typical round focal lesion in the anterior horn of spinal cord as "eagle eye " sign on transverse axial MRI.All 11 cases included 2 with simultaneous cervical spondylosis and spinal stenosis,2 with aortic dissection and 1 case associated with intraspinal canal vascular malformation.The distribution of lesions of all cases included the cervical segment(1 case),the thoracic(4 cases),the cervico-thoracic junction(3 cases),and the thoraco-lumbar segment(3 cases).Conclusion:Anterior spinal artery syndrome possesses a certain characteristic MRI manifestation,providing important clinical application for accurate diagnosis and etiologic evaluation.
出处
《放射学实践》
北大核心
2010年第7期740-742,共3页
Radiologic Practice
关键词
脊髓
脊髓前动脉综合征
磁共振成像
Spinal cord
Anterior spinal artery syndrome
Magnetic resonance imaging