Open AccessIntraoperative use of cone‐beam computed tomography in a cadaveric ossified cochlea model
Author(s) -
Barker Emma,
Trimble Keith,
Chan Harley,
Ramsden James,
Nithiananthan Sajendra,
James Adrian,
Bachar Gideon,
Daly Mike,
Irish Jonathan,
Siewerdsen Jeff
Publication year - 2009
Publication title -
otolaryngology–head and neck surgery
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.232
H-Index - 121
eISSN - 1097-6817
pISSN - 0194-5998
DOI - 10.1016/j.otohns.2008.12.046
Subject(s) - cadaveric spasm , cone beam computed tomography , cochlea , temporal bone , medicine , cochlear implant , cone beam ct , electrode array , anatomy , radiology , computed tomography , electrode , audiology , chemistry
Objectives To describe a cadaveric temporal bone model of labyrinthitis ossificans and investigate the utility of intraoperative cone‐beam computed tomography (CBCT) in the facilitating cochlear implantation. Design Cadaveric temporal bone study. Methods Five cadaveric heads had cement introduced into the 10 cochleas. CBCT and a conventional CT scan were compared to assess the extent of cochlear obliteration. The cement was drilled‐out (under CBCT guidance, if required) and cochlear implant electrode arrays (from 3 different manufacturers) inserted. Results CBCT images demonstrated temporal bone anatomy and the extent of cochlear obliteration as clearly as conventional CT in all cases. Intraoperative CBCT guided drilling and facilitated electrode placement in two of five heads (3 of 10 ears). Streak‐artifact from the electrodes of two devices partially obscured image clarity. Conclusions The obliterated cochlear model reproduced a disease‐ossified cochlear both radiographically and surgically. CBCT is useful for intraoperative imaging to facilitate electrode array placement in the obliterated or congenitally abnormal cochlea.