title: High-intensity facial nerve lesions on T2-weighted images in chronic persistent facial nerve palsy.
abstract: Our aim was to estimate the value of MRI in detecting irreversibly paralysed facial nerves. We examined 95 consecutive patients with a facial nerve palsy (14 with a persistent palsy, and 81 with good recovery), using a 1.0 T unit, with T2-weighted and contrast-enhanced T1-weighted images. The geniculate ganglion and tympanic segment had gave high signal on T2-weighted images in the chronic stage of persistent palsy, but not in acute palsy. The enhancement pattern of the facial nerve in the chronic persistent facial nerve palsy is similar to that in the acute palsy with good recovery. These findings suggest that T2-weighted MRI can be used to show severely damaged facial nerves.
authors.affiliation: Department of Radiology, Sendai City Hospital, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Kinoshita
authors.forename: K
authors.initials: K
authors.lastname: Ishii
authors.forename: T
authors.initials: T
authors.lastname: Okitsu
authors.forename: T
authors.initials: T
authors.lastname: Ogawa
authors.forename: T
authors.initials: T
authors.lastname: Okudera
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002908:Chronic Disease; D005155:Facial Nerve Diseases / Q000150:complications / Q000473:pathology*; D005158:Facial Paralysis / Q000209:etiology / Q000473:pathology*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies