摘要
随着人类对嗅觉功能认知的重视和深入研究,逐渐发展出多种嗅觉系统的检测方法。主客观嗅觉功能检查能够从不同层面反应嗅觉的水平,尤其客观检测目前被认为是评估嗅觉功能的＂金标准＂。但是这些检查不能确定嗅觉信号产生的部位,以及引起嗅觉障碍的原因。影像学技术则能够显示嗅觉通路结构,并且功能性MRI（functional MRI,fMRI）和正电子发射计算机断层扫描（positron emission tomography,PET）等可以反应大脑不同区域对特定刺激的功能活性。相对于CT扫描,
Summary MRI scanning is an important technique to evaluate the olfactory system, special scanning parameters could reveal the fine structures of the olfactory pathway. Olfactory cleft, olfactory bulb/tract, olfactory sulcus and olfactory center are the main targets of the scanning. Chronic rhino-sinusitis, head trauma, congenital dysplasia and neural degenerative diseases are the primary causes of the olfactory dysfunction and have particular imaging presentations respectively. Besides indicating the olfactory pathway lesions, MRI could also present the etiology and the prognosis of the olfactory disorder.
出处
《临床耳鼻咽喉头颈外科杂志》
CAS
北大核心
2014年第14期1093-1096,共4页
Journal of Clinical Otorhinolaryngology Head And Neck Surgery
基金
国家自然科学基金项目(No:81271062)
北京市科技计划项目(No:Z121107001012041)
北京市教育委员会科技计划重点项目(No:11320005)
关键词
嗅觉通路
磁共振
嗅觉障碍
中枢
olfactory pathway
MRI
olfactory disorder
olfactory center
