Posttraumatic anosmia: olfactory event related potentials and MRI evaluation.
- Author:
Jian-Feng LIU
1
;
Hui YOU
;
Dao-Feng NI
;
Qiu-Hang ZHANG
;
Da-Zhang YANG
;
Na-Ya WANG
Author Information
- Publication Type:Journal Article
- MeSH: Adult; Craniocerebral Trauma; complications; Evoked Potentials; Female; Humans; Magnetic Resonance Imaging; Male; Middle Aged; Olfaction Disorders; etiology; pathology; physiopathology; Retrospective Studies
- From:Chinese Journal of Otorhinolaryngology Head and Neck Surgery 2008;43(3):198-201
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVEUsing olfactory event related potentials (OERP) and magnetic resonance to evaluate olfactory function in patients with posttraumatic anosmia.
METHODSTwenty 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.
RESULTSSubjective 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%).
CONCLUSIONSOERP can objectively evaluate posttraumatic olfactory function, and magnetic resonance of olfactory pathway can precisely identify the location and extent of injures.
