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

Acta Oto-laryngologica
Tohru TanigawaHiromi Ueda

Abstract

The findings suggest that alterations in the composition of inner ear fluid play important roles in the development of low-tone sudden deafness (LTSD). High-intensity signals on three-dimensional fluid attenuated inversion recovery (3D-FLAIR) may reflect an increased concentration of protein in the inner ear due to the increased permeability of blood vessels. Disordered blood flow in the inner ear is associated with an increased permeability of the blood-labyrinth barrier. Therefore, the disordered blood flow in the cochlea may be closely related to the pathophysiological mechanisms of LTSD. The 3D-FLAIR sequence has been used to detect alterations in the composition of inner ear fluid. The purpose of this study was to report imaging findings in cases of LTSD. 3D-FLAIR magnetic resonance imaging was performed in five women with nonrecurrent-type LTSD. Three of the five patients (60%) showed high-intensity signals in the cochlear basal turn on precontrast 3D-FLAIR. Postcontrast enhancement was not prominent in any patient. In patient 1, the cochlea of the unaffected side showed high-intensity signals. No patients had such signals in the vestibulae or the semicircular canals.

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Citations

Nov 26, 2015·Magnetic Resonance in Medical Sciences : MRMS : an Official Journal of Japan Society of Magnetic Resonance in Medicine·Shinji NaganawaMitsuru Ikeda
Nov 11, 2010·Acta Oto-laryngologica·Kiminori SatoTadashi Nakashima
Nov 14, 2014·Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology·Zhen Gao, Fang-lu Chi
Feb 13, 2019·European Archives of Oto-rhino-laryngology : Official Journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : Affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery·Jiali WangWuqing Wang
Dec 25, 2013·Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology·Mia E MillerRoberto A Cueva

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