Facial nerve enhancement in Gd-MRI in patients with Bell's palsy

The diagnostic value of a contrast enhanced MRI in patients with Bell's palsy was investigated. It was a characteristic finding that the internal acoustic meatal segment of the facial nerve was enhanced only on the affected side. The signal intensity ratio of the geniculate ganglion and the tym...

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Bibliographic Details
Published inActa oto-laryngologica. Supplement Vol. 511; p. 165
Main Authors Kohsyu, H, Aoyagi, M, Tojima, H, Tada, Y, Inamura, H, Ikarashi, T, Koike, Y
Format Journal Article
LanguageEnglish
Published Norway 1994
Subjects
Contrast Media
Ear, Inner - innervation
Ear, Middle - innervation
Electrodiagnosis
Facial Nerve - pathology
Facial Paralysis - diagnosis
Facial Paralysis - pathology
Gadolinium
Gadolinium DTPA
Geniculate Ganglion - pathology
Humans
Image Enhancement
Magnetic Resonance Imaging - methods
Mastoid - innervation
Organometallic Compounds
Pentetic Acid - analogs & derivatives
Petrous Bone - innervation
Reflex, Acoustic - physiology
Stapes - physiopathology
Taste - physiology
Tears - metabolism
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Summary:The diagnostic value of a contrast enhanced MRI in patients with Bell's palsy was investigated. It was a characteristic finding that the internal acoustic meatal segment of the facial nerve was enhanced only on the affected side. The signal intensity ratio of the geniculate ganglion and the tympanic segment was significantly higher on the affected side than on the normal side. The severity of the facial palsy and the results of physiological examinations showed no relation to the results of MRI scans. Gd enhanced MRI thus appears to provide some useful findings for estimating the affected region of Bell's palsy, whereas it is not considered to be valuable in the diagnosis of severity.
ISSN:0365-5237
DOI:10.3109/00016489409128325