Complication of Cochlear Implantation Surgery
Michael A. Meccaa,
William Waglea,
Allison Lupinettib and
Steven Parnesb
a Department of Radiology, Albany Medical Center, Albany, New York
b Department of Otolaryngology, Albany Medical Center, Albany, New York
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FIG 1. High-resolution axial images of the temporal bone demonstrate correct positioning of the CI electrode proximally at the round window but then taking an abnormal course.
A, Mastoidectomy and CI electrode positioned at the round window.
B, The electrode is positioned within the vestibule.
C, At the level of the lateral semicircular canal and internal auditory canal, the electrode is seen anteriorly still within the vestibule.
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FIG 2. High-resolution coronal images of the temporal bone demonstrate the entire labyrinthine path of the CI electrode.
A, The electrode is seen entering the round window but then within the vestibule and continuing into the superior semicircular canal.
B, A portion of the extralabyrinthine electrode is seen along the junction of mastoid and squamosal portions of temporal bone, deep to the temporalis muscle.
C, The basal turn of the cochlear is seen with no electrode in place.
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AJNR - American Journal of Neuroradiology