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中枢神经系统华勒氏变性的MRI特征分析 被引量:5

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摘要 目的总结华勒氏变性(Wallerian degeneration,MD)的MR I特征。方法搜集继发于大脑半球病变的MD病例22例,原发病变位于小脑7例,其中高血压出血11例,梗死9例,血管畸形出血6例,外伤挫伤3例。17例均做了MR平扫,12例做了增强扫描。结果 MD表现为单侧大脑半球破坏性病灶,出现同侧大脑脚萎缩,双侧大脑半球病变,同时累及双侧大脑脚;小脑病变,出现亦出现同侧桥脑或延髓的类似改变,T1WI表现为等或稍低信号(15例),在T2WI为高信号(15例),增强均未见明显强化,病灶周围胶质增生呈轻-中度强化。结论 MRI能准确反映中枢神经MD系由神经元近端损伤累及远段轴突和髓鞘的顺行性变性的原发和继发性变性病变的特征性改变,从而提高对该变性的认识,提高诊断准确性。
出处 《罕少疾病杂志》 2013年第5期40-42,共3页 Journal of Rare and Uncommon Diseases
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