外伤后嗅觉功能障碍的MR成像研究  

MR findings of posttraumatic dysosmia

作　　者：有慧[1] 冯逢[1] 刘剑锋[2] 王剑[3] 倪道凤[3] 胡凌[1] 郑福玲[1] 孙宏毅[1] 陈珺[1] 金征宇[1] 

机构地区：[1]中国医学科学院中国协和医科大学北京协和医院放射科,北京100730 [2]中日友好医院耳鼻喉科,北京100029 [3]中国医学科学院中国协和医科大学北京协和医院耳鼻喉科,北京100730

出　　处：《中国医学影像技术》2008年第6期858-861,共4页Chinese Journal of Medical Imaging Technology

摘　　要：目的研究外伤后嗅觉功能障碍的MR影像表现。方法28例外伤后嗅觉功能障碍患者行MRI检查,观察嗅球、嗅束、皮层损伤情况及测量嗅球体积,与15例年龄匹配健康志愿者相比较。结果17例原发外伤部位为后枕部。损伤的表现主要为软化灶和慢性期出血改变。损伤部位常见于额叶皮层(92.9%)、嗅球嗅束(82.1%)和颞叶(42.9%)。外伤后嗅觉功能障碍患者嗅球体积小于正常志愿者(P<0.05)。结论外伤后嗅觉功能障碍的最常见影像学表现是额叶底部、嗅球嗅束和颞叶的软化灶、慢性期出血改变。MRI是外伤后嗅觉功能障碍的一种必要的补充诊断手段。Objective To evaluate the MR findings of posttraumatic dysosmia.Methods Twenty-eight patients with posttraumatic dysosmia and 15 age-matched normal volunteers underwent MR examination.In dysosmic patients,the injury of olfactory bulbs,tracts and related cortex was visualized and recorded.And the volume of olfactory bulbs in dysosmic patients was measured and compared with that in 15 normal volunteers.Results Seventeen of 28 patients had primary injury at occipital area.The imaging findings included malacia and chronic hemorrhagic foci.The injuries were commonly located at frontal lobes（92.9%）,olfactory bulbs and tracts（82.1%）as well as temporal lobes（42.9%）.The olfactory bulbs in dysosmic patients were smaller than those in volunteers（P〈0.05）.Conclusion The common imaging findings of posttraumatic dysosmia include malacia and chronic hemorrhagic foci in frontal lobes,olfactory bulbs and tracts as well as temporal lobes.MR imaging is a complementary modality for diagnosis of posttraumatic dysosmia.

关 键 词：磁共振成像 嗅觉障碍 

分 类 号：R745.1[医药卫生—神经病学与精神病学] R445.2[医药卫生—临床医学]