Intra-operative use of Cone-beam computer/tomographyin a cadaveric ossified cochlea model

King, Emma, Trimble, Keith, Chan, Harley, Ramsden, James, Nithiananthan, Sajendra, James, Adrian, Bachar, Gideon, Daly, Mike, Irish, Jonathan and Siewerdsen, Jeff (2009) Intra-operative use of Cone-beam computer/tomographyin a cadaveric ossified cochlea model. Otolaryngology - Head and Neck Surgery, 140, (5), 697-702. (doi:10.1016/j.otohns.2008.12.046). (PMID:19393414).


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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

Item Type: Article
Digital Object Identifier (DOI): doi:10.1016/j.otohns.2008.12.046
ISSNs: 0194-5998 (print)
1097-6817 (electronic)
Subjects: R Medicine > RF Otorhinolaryngology
Q Science > QA Mathematics > QA75 Electronic computers. Computer science
R Medicine > RD Surgery
Divisions : University Structure - Pre August 2011 > School of Medicine > Cancer Sciences
ePrint ID: 180061
Accepted Date and Publication Date:
May 2009Published
Date Deposited: 07 Apr 2011 07:27
Last Modified: 31 Mar 2016 13:35

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