Fig. 6

A Gd-MRI (left column) and the corresponding MRI colored images (right column) showed a significant cochlear (white arrow) and vestibular hydrops (red arrow) in the left ear of patient no. 23 (Table 1) before surgery. Postoperative images showed no changes of cochlear EH (white arrow) and vestibular EH (red arrow) both 2 weeks (B) and 15 months (C) following ESD surgery comparing with pre-surgery recording. Gd-MRI gadopentetate dimeglumine magnetic resonance imaging, EH endolymphatic hydrops, ESD endolymphatic sac decompression, MRI magnetic resonance imaging