3D-FLAIR MRI in facial nerve paralysis with and without audio-vestibular disorder

Nakata, Seiichi; Mizuno, Tadahaya; Naganawa, Shinji; Sugiura, Makoto; Yoshida, Tadao; Teranishi, Masaaki; Nakashima, Tsutomu

doi:10.3109/00016480903338123

Cited by 23 publications

(25 citation statements)

References 15 publications

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“…FHS patients were defined as those in whom MRI signals in the affected inner ear or CSF were of highintensity or of higher intensity than cerebellar white matter [9]. FNS patients were those affected by sudden deafness that did not show any significant signal in the affected inner ear or CSF.…”

Section: Methodsmentioning

confidence: 99%

Feasibility of three-dimensional fluid-attenuated inversion recovery magnetic resonance imaging as a prognostic factor in patients with sudden hearing loss

Lee

Jung

Park

et al. 2011

Eur Arch Otorhinolaryngol

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The aim of this study was to confirm the feasibility of high signal on three-dimensional fluid-attenuated inversion recovery magnetic resonance imaging (3D FLAIR MRI) as one of the prognostic factors in recovery of sudden idiopathic hearing loss. A retrospective study was conducted using patients who were diagnosed with unilateral sudden idiopathic hearing loss from January 2008 to December 2010. A total of 120 patients were enrolled in for this study. High-intensity signal in the inner ear on precontrast 3D FLAIR MRI was observed in 31 patients (25.8%; FHS) and labyrinthine enhancement was not observed in another 89 patients (FNS; 74.2%). There was no significant difference in patients' characteristics between two groups except final hearing. Final puretone average of the FHS group was 49.4 dB, significantly worse than FNS group's 36.7 dB (p = 0.037 < 0.05). Final hearing was related to initial hearing, accompanying dizziness, and abnormal auditory brainstem response result by multiple regression analysis. However, presence of high-intensity signal on precontrast 3D FLAIR MRI did not affect final hearing significantly. Significant difference due to the presence of dizziness in final hearing was observed in whole patients and in the FHS group, whereas no significant difference in final hearing was observed in FNS group. (p = 0.063 > 0.05). From these findings, the presence of high-intensity signal on 3D FLAIR MRI is a subfactor related to dizziness rather than a single poor prognostic factor and the absence of high-intensity signal on 3D FLAIR MRI can possibly imply relative good prognosis.

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Section: Methodsmentioning

confidence: 99%

Feasibility of three-dimensional fluid-attenuated inversion recovery magnetic resonance imaging as a prognostic factor in patients with sudden hearing loss

Lee

Jung

Park

et al. 2011

Eur Arch Otorhinolaryngol

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“…Yoshida et al have reported that 3D-FLAIR MRI showed high-intensity signals in the affected ears of 31 (65%) of 48 patients with idiopathic sudden deafness [3]. High-intensity signals in the inner ear have been shown in patients with various diseases, such as mumps deafness, cochlear otosclerosis, Hunt syndrome, and cholesteoma with labyrinth fistula [4][5][6][7]. However, evaluation of LTSD by means of 3D-FLAIR MRI has not been reported.…”

Section: Introductionmentioning

confidence: 91%

3D-FLAIR MRI findings in patients with low-tone sudden deafness

Tanigawa

Tanaka

Sato

et al. 2010

Acta Oto-Laryngologica

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“…63 Prognosis for hearing was not good in ears with a high signal on precontrast 3D-FLAIR. 65,66 Inflammation A signal increase in the labyrinthine fluid on 3D-FLAIR in various inflammatory diseases such as acute meningitis, acute otitis media, Wegener's granulomatosis, 27 mumps deafness, 26 RamsayHunt syndrome, [67][68][69] and labyrinthine fistula by a cholesteatoma 70 has been reported. Signal increase in the labyrinthine fluid on precontrast 3D-FLAIR suggests the presence of a small degree of hemorrhage or protein, and on post-contrast 3D-FLAIR, enhancement of the labyrinthine fluid suggests the active breakdown of the blood-labyrinthine barrier.…”

Section: Visualization Of White Matter Tractsmentioning

confidence: 99%

The Technical and Clinical Features of 3D-FLAIR in Neuroimaging

Naganawa

2015

magn reson med sci

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In clinical MR neuroimaging, 3D fluid-attenuated inversion recovery (3D-FLAIR) with a variable-flip-angle turbo spin echo sequence is becoming popular. There are more than 100 reports regarding 3D-FLAIR in the PubMed database. In this article, the technical and clinical features of 3D-FLAIR for neuroimaging are reviewed and summarized. 3D-FLAIR allows thinner slices with multi-planar reformation capability, a higher flow sensitivity, high sensitivity to subtle T 1 changes in fluid, images without cerebrospinal fluid (CSF) inflow artifacts, and a 3D dataset compatible with computer-aided analysis. In addition, 3D-FLAIR can be obtained within a clinically reasonable scan time. It is important for radiologists to be familiar with the features of 3D-FLAIR and to provide useful information for patients.

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3D-FLAIR MRI in facial nerve paralysis with and without audio-vestibular disorder

Abstract: Five of the six patients with audio-vestibular disturbance showed high signals in the inner ear on precontrast 3D-FLAIR. In comparison, among nine patients with Bell's palsy, only one patient showed high signals in the inner ear on precontrast 3D-FLAIR (p < 0.05).

Cited by 23 publications

References 15 publications

Feasibility of three-dimensional fluid-attenuated inversion recovery magnetic resonance imaging as a prognostic factor in patients with sudden hearing loss

Feasibility of three-dimensional fluid-attenuated inversion recovery magnetic resonance imaging as a prognostic factor in patients with sudden hearing loss

3D-FLAIR MRI findings in patients with low-tone sudden deafness

The Technical and Clinical Features of 3D-FLAIR in Neuroimaging

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