Image evaluation of endolymphatic space in fluctuating hearing loss without vertigo

Masaaki Teranishi, Shinji Naganawa, Naomi Katayama, Makoto Sugiura, Seiichi Nakata, Michihiko Sone, Tsutomu Nakashima

研究成果: Article査読

28 被引用数 (Scopus)

抄録

The objective of the present study was to investigate endolymphatic space images in patients with fluctuating hearing loss without vertigo, and to elucidate its underlying pathophysiology. Eight patients with fluctuating hearing loss without vertigo were included in this study. 3T MRI was taken, 24 h after intratympanic injection of gadolinium-diethylenetriamine pentaacetic acid (Gd-DTPA). Electrocochleography and VEMP tests were performed to evaluate cochlear and vestibular functions. Endolymphatic hydrops were observed both in the cochlea and in the vestibule of all eight patients. Three patients out of six whose summating potential/action potential (SP/AP) ratio was recordable showed an elevation of SP/AP ratio. In the two patients with remarkable endolymphatic hydrops in the vestibule, VEMP was absent from the affected ear. In conclusion, 3T MRI after intratympanic injection of Gd-DTPA revealed endolymphatic hydrops both in the cochlea and in the vestibule in the patients with fluctuating hearing loss without vertigo.

本文言語English
ページ(範囲)1871-1877
ページ数7
ジャーナルEuropean Archives of Oto-Rhino-Laryngology
266
12
DOI
出版ステータスPublished - 12-2009
外部発表はい

All Science Journal Classification (ASJC) codes

  • 耳鼻咽喉科学

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