Abstract：
OBJECTIVE:Cochlear nerve preserving translabyrinthine vestibular schwannoma (VS) resection enables concurrent cochlear implantation. Implantation in patients with VS raises important concerns including the ability to undergo postoperative magnetic resonance imaging (MRI) monitoring of residual tumor growth or tumor recurrence, specifically with a retained magnet. We aim to assess the feasibility of MRI monitoring and the impact on image quality with retained cochlear implant (CI) magnets. METHODS:Retrospective review of post-operative head MRI scans in CI recipients with a retained CI magnet, after cochlear nerve preserving translabyrinthine excision of VS. The ability to visualize the ipsilateral and contralateral internal auditory canal (IAC) and cerebellopontine angle (CPA) were assessed. RESULTS:A total of eight surveillance head MRI were performed in six patients. In one case, in which the receiver was positioned lower, the view of the ipsilateral IAC and CPA was distorted. In all other cases, the views of both the ipsilateral and contralateral IAC and CPA were overall unimpaired. DISCUSSION:Imaging artifact only very rarely impedes adequate visualization of the ipsilateral IAC or CPA in CI recipients. In anticipation of the need for further IAC and CPA imaging, it would be advisable to place the receiver in an exaggerated superior-posterior position to further decrease obscuring artifact. Thus, serial monitoring of VS tumors can be performed safely with preservation of image quality with a retained receiver magnet. CONCLUSIONS:When placing the CI receiver-stimulator farther posterior-superiorly, excellent visualization of the IAC and CPA can be accomplished without significantly impairing the image quality.
journal_name
Am J Otolaryngoljournal_title
American journal of otolaryngologyauthors
Schwartz N,Rooth MA,Dillon MT,O'Connell BP,Dedmon MM,Huang BY,Brown KDdoi
10.1016/j.amjoto.2020.102518subject
Has Abstractpub_date
2020-01-01 00:00:00pages
102518issue
4eissn
0196-0709issn
1532-818Xpii
S0196-0709(20)30200-3journal_volume
41pub_type
杂志文章abstract：PURPOSE:To investigate objective measures that could increase the positive predictive value of computed tomography (CT) in diagnosing deep neck space infections (DNSIs). METHODS:A retrospective analysis of patients surgically treated at a tertiary care hospital for DNSIs for more than 2 years were reviewed. Patients w...
journal_title：American journal of otolaryngology
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journal_title：American journal of otolaryngology
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journal_title：American journal of otolaryngology
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更新日期：2019-01-01 00:00:00
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