caa a22 4500 477086985 CHVBK 20180405111506.0 cr unu---uuuuu 170330e19960901xx s 000 0 eng 10.1007/BF00168496 doi (NATIONALLICENCE)springer-10.1007/BF00168496 Magnetic resonance imaging of patients with large vestibular aqueducts [Elektronische Daten] [T. Okumura, I. Honjo, H. Takahashi, A. Takagi, R. Azato] The vestibular aqueduct (VA) and endolymphatic sac (ES) were examined by magnetic resonance imaging in eight patients (14 ears) with large VAs, and the results were compared with those obtained in five normal volunteers (10 ears). It was not possible to identify either the VA or ES in any of the control ears. However, in all the 14 ears with a large VA, the VA was detected as a fluid-filled structure. In 12 ears the ES was seen to be markedly enlarged and also filled with fluid. In one ear, the volume of the fluid-filled space within the VA and ES was measured as 912 mm3 on serial images. Five patients (ten ears) were observed to have a fluid-filled VA and enlarged ES without cochlear anomalies and reported frequent episodes of sudden hearing loss and vertigo following exercise, long exposure to sunshine, minor trauma and the like. Two other patients (three ears) also had enlarged VA and ES as well as cochlear anomalies, but did not have episodes of sudden hearing loss and vertigo. These findings suggest that direct transmission of intracranial pressure changes to the inner ear or subsequent movement of endolymph in patients with a large VA may adversely influence a seemingly normal cochlea and vestibule. Springer-Verlag, 1996 Endolymphatic sac nationallicence Fluctuating hearing nationallicence Large vestibular aqueducts nationallicence Magnetic resonance imaging nationallicence Okumura T. Department of Otolaryngology, Kobe City General Hospital, 4-6, Minatojima-Nakamachi, 650, Chuo-Ku, Kobe, Japan aut Honjo I. Department of Hearing and Speech Science, Graduate School of Medicine, Kyoto University, 606-01, Sakyo-Ku, Kyoto, Japan aut Takahashi H. Department of Hearing and Speech Science, Graduate School of Medicine, Kyoto University, 606-01, Sakyo-Ku, Kyoto, Japan aut Takagi A. Department of Otolaryngology, Shizuoka Prefectural General Hospital, Kitayasuhigashi, 420, Shizuoka, Japan aut Azato R. Department of Nuclear Medicine, Kyoto University Faculty of Medicine, Sakyo-Ku, 606-01, Kyoto, Japan aut European Archives of Oto-Rhino-Laryngology Springer-Verlag 253/7(1996-09-01), 425-428 0937-4477 253:7<425 1996 253 405 https://doi.org/10.1007/BF00168496 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00168496 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Okumura T. Department of Otolaryngology, Kobe City General Hospital, 4-6, Minatojima-Nakamachi, 650, Chuo-Ku, Kobe, Japan aut NATIONALLICENCE 700 1- Honjo I. Department of Hearing and Speech Science, Graduate School of Medicine, Kyoto University, 606-01, Sakyo-Ku, Kyoto, Japan aut NATIONALLICENCE 700 1- Takahashi H. Department of Hearing and Speech Science, Graduate School of Medicine, Kyoto University, 606-01, Sakyo-Ku, Kyoto, Japan aut NATIONALLICENCE 700 1- Takagi A. Department of Otolaryngology, Shizuoka Prefectural General Hospital, Kitayasuhigashi, 420, Shizuoka, Japan aut NATIONALLICENCE 700 1- Azato R. Department of Nuclear Medicine, Kyoto University Faculty of Medicine, Sakyo-Ku, 606-01, Kyoto, Japan aut NATIONALLICENCE 773 0- European Archives of Oto-Rhino-Laryngology Springer-Verlag 253/7(1996-09-01), 425-428 0937-4477 253:7<425 1996 253 405 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer