Posttraumatic anosmia:olfactory event related potentials and MRI evaluation
10.3321/j.issn:1673-0860.2008.03.009
- VernacularTitle:外伤后失嗅患者的嗅觉事件相关电位和MRI评估
- Author:
Jian-Feng LIU
1
;
Hui YOU
;
Dao-Feng NI
;
Qia-Hang ZHANG
;
Da-Zhang YANG
;
Na-Ya WANG
Author Information
1. 卫生部中日友好医院
- Keywords:
Olfaction disorders;
Brain injuries;
Evoked potentials;
Olfactory nerve
- From:
Chinese Journal of Otorhinolaryngology Head and Neck Surgery
2008;43(3):198-201
- CountryChina
- Language:Chinese
-
Abstract:
Objective Using olfactory event related potentials(OERP) and magnetic resonance to evaluate olfactory function in patients with posttraumatic anosmia. Methods Twenty four patients with posttraumatic anosmia were reviewed retrospectively. A thorough medical history,physical examination,nasal endoscopy,T&T olfactory testing,olfactory event-related potentials,brain computed tomography scan and magnetic resonance image of olfactory pathway were performed in all patients. Results Subjective olfactory testing indicated 20 of 24 patients were birhinal anosmia. 2 with right nostril anosmia and left impairment,2 with left anosmia and right normal. No OERP were obtained in 24(20 were birhinal,4 was monorhinal),except 4 cases with single nostril. Magnetic resonance imaging revealed the injures to the olfactory bulbs(100%),rectus gyrus(91.7%),orbital gyrus(67%),olfactory tracts(8%) and temporal lobes(8%). Conclusions OERP can objectively evaluate posttraumatic olfactory function,and magnetic resonance of olfactory pathway can precisely identify the location and extent of injures.
