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<meta name="DC.Title" content="Prediction of difficult round window visibility during cochlear implantation via a reformatted CT facial recess view: A retrospective study with surgical correlation" />
<meta name="DC.Identifier" content="10.3174/ajnr.A8503" />
<meta name="DC.Date" content="2024-09-16" />
<meta name="DC.Publisher" content="American Journal of Neuroradiology" />
<meta name="DC.Rights" content="© 2024 by American Journal of Neuroradiology" />
<meta name="DC.AccessRights" content="restricted" />
<meta name="DC.Description" content="BACKGROUND AND PURPOSE: Cochlear implant surgery is performed commonly through the facial recess via the round window (RW) approach. This study aims to evaluate the utility of reformatting the pre-operative CT temporal bone scan into a CT facial recess view in alerting surgeons to a potentially difficult surgery with poorly visualized round window.

MATERIALS AND METHODS: This is a retrospective study of 41 patients (43 ears), who had undergone cochlear implant surgery. Intraoperative findings of round window position relative to 2nd genu-mastoid portion of facial nerve, and round window membrane orientation were recorded by the surgeons. Pre-operative CTs were analyzed by two radiologists in axial and a reformatted facial recess plane that simulates the surgeon's view via the facial recess. Radiological assessment markers include the facial nerve-chorda tympani nerve width (FN-CTN) measured 1.2mm inferior to the exit point of the chorda tympani nerve into the tympanic cavity, round window position relative to 2nd genu-mastoid segment of the facial nerve and RW membrane's angle from the vertical axis.

RESULTS: The best predictor for difficult round window intraoperative visibility is the RW position relative to the 2nd genu-mastoid segment of the facial nerve lying lateral to it on CT facial recess reformatted images. A RW that lies partially to completely posterior to the posterior border of the 2nd genu-mastoid segment of the facial nerve had up to 55.6% risk of encountering difficult access, while those positioned anterior to or partially anterior to the anterior edge of the 2nd genu-mastoid segment of the facial nerve had 0% risk of difficult access (p&lt;0.05). There are substantial agreements in the intra-rater (Kappa=0.751, p&lt;0.001) and inter-rater reliability (Kappa= 0.698, p&lt;0.001). There is no significant association between surgical difficulty and facial nerve-chorda tympani distance or RW angle (p&gt;0.05).

CONCLUSIONS: Identification of round window positions in the reformatted CT facial recess view is a useful tool in predicting potentially difficult round window access in cochlear implant surgery.

ABBREVIATIONS: RW= Round window, FN-CTN= facial nerve to chorda tympani nerve width" />
<meta name="DC.Contributor" content="Si Wei Kheok" />
<meta name="DC.Contributor" content="Jia Hui Ng" />
<meta name="DC.Contributor" content="Lishya Liauw" />
<meta name="DC.Contributor" content="Vanessa Yee Jueen Tan" />
<meta name="DC.Contributor" content="Jiun Fong Thong" />
<meta name="article:published_time" content="2024-09-16" />
<meta name="article:section" content="ORIGINAL RESEARCH" />
<meta name="citation_title" content="Prediction of difficult round window visibility during cochlear implantation via a reformatted CT facial recess view: A retrospective study with surgical correlation" />
<meta name="citation_abstract" lang="en" content="&lt;h3&gt;ABSTRACT&lt;/h3&gt;
&lt;h3&gt;BACKGROUND AND PURPOSE:&lt;/h3&gt;
&lt;p&gt;Cochlear implant surgery is performed commonly through the facial recess via the round window (RW) approach. This study aims to evaluate the utility of reformatting the pre-operative CT temporal bone scan into a CT facial recess view in alerting surgeons to a potentially difficult surgery with poorly visualized round window.&lt;/p&gt;&lt;h3&gt;MATERIALS AND METHODS:&lt;/h3&gt;
&lt;p&gt;This is a retrospective study of 41 patients (43 ears), who had undergone cochlear implant surgery. Intraoperative findings of round window position relative to 2nd genu-mastoid portion of facial nerve, and round window membrane orientation were recorded by the surgeons. Pre-operative CTs were analyzed by two radiologists in axial and a reformatted facial recess plane that simulates the surgeon9s view via the facial recess. Radiological assessment markers include the facial nerve-chorda tympani nerve width (FN-CTN) measured 1.2mm inferior to the exit point of the chorda tympani nerve into the tympanic cavity, round window position relative to 2&lt;sup&gt;nd&lt;/sup&gt; genu-mastoid segment of the facial nerve and RW membrane9s angle from the vertical axis.&lt;/p&gt;&lt;h3&gt;RESULTS:&lt;/h3&gt;
&lt;p&gt;The best predictor for difficult round window intraoperative visibility is the RW position relative to the 2nd genu-mastoid segment of the facial nerve lying lateral to it on CT facial recess reformatted images. A RW that lies partially to completely posterior to the posterior border of the 2&lt;sup&gt;nd&lt;/sup&gt; genu-mastoid segment of the facial nerve had up to 55.6% risk of encountering difficult access, while those positioned anterior to or partially anterior to the anterior edge of the 2&lt;sup&gt;nd&lt;/sup&gt; genu-mastoid segment of the facial nerve had 0% risk of difficult access (p&amp;lt;0.05). There are substantial agreements in the intra-rater (Kappa=0.751, p&amp;lt;0.001) and inter-rater reliability (Kappa= 0.698, p&amp;lt;0.001). There is no significant association between surgical difficulty and facial nerve-chorda tympani distance or RW angle (p&amp;gt;0.05).&lt;/p&gt;&lt;h3&gt;CONCLUSIONS:&lt;/h3&gt;
&lt;p&gt;Identification of round window positions in the reformatted CT facial recess view is a useful tool in predicting potentially difficult round window access in cochlear implant surgery.&lt;/p&gt;&lt;p&gt;ABBREVIATIONS: RW= Round window, FN-CTN= facial nerve to chorda tympani nerve width&lt;/p&gt;" />
<meta name="citation_journal_title" content="American Journal of Neuroradiology" />
<meta name="citation_publisher" content="American Journal of Neuroradiology" />
<meta name="citation_publication_date" content="2024/09/16" />
<meta name="citation_mjid" content="ajnr;ajnr.A8503v1" />
<meta name="citation_id" content="ajnr.A8503v1" />
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<meta name="citation_section" content="ORIGINAL RESEARCH" />
<meta name="citation_author" content="Si Wei Kheok" />
<meta name="citation_author_institution" content="From the Department of Neuroradiology (SWK, LL), Singapore General Hospital, Singapore, Singapore; Department of Otorhinolaryngology-Head and Neck Surgery (JHN, VYJT), Singapore General Hospital, Singapore, Singapore; Department of Otorhinolaryngology, Tsueng Kwan O Hospital, Hong Kong, China; SingHealth Duke-NUS Academic Medical Centre (SWK, JHN, LL, VYJT), Singapore, Singapore." />
<meta name="citation_author" content="Jia Hui Ng" />
<meta name="citation_author_institution" content="From the Department of Neuroradiology (SWK, LL), Singapore General Hospital, Singapore, Singapore; Department of Otorhinolaryngology-Head and Neck Surgery (JHN, VYJT), Singapore General Hospital, Singapore, Singapore; Department of Otorhinolaryngology, Tsueng Kwan O Hospital, Hong Kong, China; SingHealth Duke-NUS Academic Medical Centre (SWK, JHN, LL, VYJT), Singapore, Singapore." />
<meta name="citation_author" content="Lishya Liauw" />
<meta name="citation_author_institution" content="From the Department of Neuroradiology (SWK, LL), Singapore General Hospital, Singapore, Singapore; Department of Otorhinolaryngology-Head and Neck Surgery (JHN, VYJT), Singapore General Hospital, Singapore, Singapore; Department of Otorhinolaryngology, Tsueng Kwan O Hospital, Hong Kong, China; SingHealth Duke-NUS Academic Medical Centre (SWK, JHN, LL, VYJT), Singapore, Singapore." />
<meta name="citation_author" content="Vanessa Yee Jueen Tan" />
<meta name="citation_author_institution" content="From the Department of Neuroradiology (SWK, LL), Singapore General Hospital, Singapore, Singapore; Department of Otorhinolaryngology-Head and Neck Surgery (JHN, VYJT), Singapore General Hospital, Singapore, Singapore; Department of Otorhinolaryngology, Tsueng Kwan O Hospital, Hong Kong, China; SingHealth Duke-NUS Academic Medical Centre (SWK, JHN, LL, VYJT), Singapore, Singapore." />
<meta name="citation_author" content="Jiun Fong Thong" />
<meta name="citation_author_institution" content="From the Department of Neuroradiology (SWK, LL), Singapore General Hospital, Singapore, Singapore; Department of Otorhinolaryngology-Head and Neck Surgery (JHN, VYJT), Singapore General Hospital, Singapore, Singapore; Department of Otorhinolaryngology, Tsueng Kwan O Hospital, Hong Kong, China; SingHealth Duke-NUS Academic Medical Centre (SWK, JHN, LL, VYJT), Singapore, Singapore." />
<meta name="twitter:title" content="Prediction of difficult round window visibility during cochlear implantation via a reformatted CT facial recess view: A retrospective study with surgical correlation" />
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<meta name="twitter:description" content="BACKGROUND AND PURPOSE: Cochlear implant surgery is performed commonly through the facial recess via the round window (RW) approach. This study aims to evaluate the utility of reformatting the pre-operative CT temporal bone scan into a CT facial recess view in alerting surgeons to a potentially difficult surgery with poorly visualized round window.

MATERIALS AND METHODS: This is a retrospective study of 41 patients (43 ears), who had undergone cochlear implant surgery. Intraoperative findings of round window position relative to 2nd genu-mastoid portion of facial nerve, and round window membrane orientation were recorded by the surgeons. Pre-operative CTs were analyzed by two radiologists in axial and a reformatted facial recess plane that simulates the surgeon's view via the facial recess. Radiological assessment markers include the facial nerve-chorda tympani nerve width (FN-CTN) measured 1.2mm inferior to the exit point of the chorda tympani nerve into the tympanic cavity, round window position relative to 2nd genu-mastoid segment of the facial nerve and RW membrane's angle from the vertical axis.

RESULTS: The best predictor for difficult round window intraoperative visibility is the RW position relative to the 2nd genu-mastoid segment of the facial nerve lying lateral to it on CT facial recess reformatted images. A RW that lies partially to completely posterior to the posterior border of the 2nd genu-mastoid segment of the facial nerve had up to 55.6% risk of encountering difficult access, while those positioned anterior to or partially anterior to the anterior edge of the 2nd genu-mastoid segment of the facial nerve had 0% risk of difficult access (p&lt;0.05). There are substantial agreements in the intra-rater (Kappa=0.751, p&lt;0.001) and inter-rater reliability (Kappa= 0.698, p&lt;0.001). There is no significant association between surgical difficulty and facial nerve-chorda tympani distance or RW angle (p&gt;0.05).

CONCLUSIONS: Identification of round window positions in the reformatted CT facial recess view is a useful tool in predicting potentially difficult round window access in cochlear implant surgery.

ABBREVIATIONS: RW= Round window, FN-CTN= facial nerve to chorda tympani nerve width" />
<meta name="og-title" property="og:title" content="Prediction of difficult round window visibility during cochlear implantation via a reformatted CT facial recess view: A retrospective study with surgical correlation" />
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<meta name="og-site-name" property="og:site_name" content="American Journal of Neuroradiology" />
<meta name="og-description" property="og:description" content="BACKGROUND AND PURPOSE: Cochlear implant surgery is performed commonly through the facial recess via the round window (RW) approach. This study aims to evaluate the utility of reformatting the pre-operative CT temporal bone scan into a CT facial recess view in alerting surgeons to a potentially difficult surgery with poorly visualized round window.

MATERIALS AND METHODS: This is a retrospective study of 41 patients (43 ears), who had undergone cochlear implant surgery. Intraoperative findings of round window position relative to 2nd genu-mastoid portion of facial nerve, and round window membrane orientation were recorded by the surgeons. Pre-operative CTs were analyzed by two radiologists in axial and a reformatted facial recess plane that simulates the surgeon's view via the facial recess. Radiological assessment markers include the facial nerve-chorda tympani nerve width (FN-CTN) measured 1.2mm inferior to the exit point of the chorda tympani nerve into the tympanic cavity, round window position relative to 2nd genu-mastoid segment of the facial nerve and RW membrane's angle from the vertical axis.

RESULTS: The best predictor for difficult round window intraoperative visibility is the RW position relative to the 2nd genu-mastoid segment of the facial nerve lying lateral to it on CT facial recess reformatted images. A RW that lies partially to completely posterior to the posterior border of the 2nd genu-mastoid segment of the facial nerve had up to 55.6% risk of encountering difficult access, while those positioned anterior to or partially anterior to the anterior edge of the 2nd genu-mastoid segment of the facial nerve had 0% risk of difficult access (p&lt;0.05). There are substantial agreements in the intra-rater (Kappa=0.751, p&lt;0.001) and inter-rater reliability (Kappa= 0.698, p&lt;0.001). There is no significant association between surgical difficulty and facial nerve-chorda tympani distance or RW angle (p&gt;0.05).

CONCLUSIONS: Identification of round window positions in the reformatted CT facial recess view is a useful tool in predicting potentially difficult round window access in cochlear implant surgery.

ABBREVIATIONS: RW= Round window, FN-CTN= facial nerve to chorda tympani nerve width" />
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    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0">Si Wei Kheok</span>, <span class="highwire-citation-author" data-delta="1">Jia Hui Ng</span>, <span class="highwire-citation-author" data-delta="2">Lishya Liauw</span>, <span class="highwire-citation-author" data-delta="3">Vanessa Yee Jueen Tan</span> and <span class="highwire-citation-author" data-delta="4">Jiun Fong Thong</span></span></div>
  
    	<div class="highwire-cite-metadata"><span  class="highwire-cite-metadata-journal highwire-cite-metadata">American Journal of Neuroradiology </span><span  class="highwire-cite-metadata-date highwire-cite-metadata">September 2024,  </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">ajnr.A8503; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata">DOI: https://doi.org/10.3174/ajnr.A8503 </span></div>
  
  
  
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<div id="hw-article-author-popups-top-node-110597--645892452" style="display: none;"><div class="author-tooltip-0"><div class="author-tooltip-name">Si Wei Kheok </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'>From the Department of Neuroradiology (SWK, LL), Singapore General Hospital, Singapore, Singapore; Department of Otorhinolaryngology-Head and Neck Surgery (JHN, VYJT), Singapore General Hospital, Singapore, Singapore; Department of Otorhinolaryngology, Tsueng Kwan O Hospital, Hong Kong, China; SingHealth Duke-NUS Academic Medical Centre (SWK, JHN, LL, VYJT), Singapore, Singapore.</div></span></div><ul class="author-tooltip-find-more"><li class="author-tooltip-gs-link first"><a href="/lookup/google-scholar?link_type=googlescholar&amp;gs_type=author&amp;author%5B0%5D=Si%2BWei%2BKheok%2B" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on Google Scholar</a></li><li class="author-tooltip-pubmed-link"><a href="/lookup/external-ref?access_num=Kheok%20SW&amp;link_type=AUTHORSEARCH" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on PubMed</a></li><li class="author-site-search-link last"><a href="/search/author1%3ASi%2BWei%2BKheok%2B" rel="nofollow" class="" data-icon-position="" data-hide-link-title="0">Search for this author on this site</a></li></ul></div><div class="author-tooltip-1"><div class="author-tooltip-name">Jia Hui Ng </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'>From the Department of Neuroradiology (SWK, LL), Singapore General Hospital, Singapore, Singapore; Department of Otorhinolaryngology-Head and Neck Surgery (JHN, VYJT), Singapore General Hospital, Singapore, Singapore; Department of Otorhinolaryngology, Tsueng Kwan O Hospital, Hong Kong, China; SingHealth Duke-NUS Academic Medical Centre (SWK, JHN, LL, VYJT), Singapore, Singapore.</div></span></div><ul class="author-tooltip-find-more"><li class="author-tooltip-gs-link first"><a href="/lookup/google-scholar?link_type=googlescholar&amp;gs_type=author&amp;author%5B0%5D=Jia%2BHui%2BNg%2B" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on Google Scholar</a></li><li class="author-tooltip-pubmed-link"><a href="/lookup/external-ref?access_num=Ng%20JH&amp;link_type=AUTHORSEARCH" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on PubMed</a></li><li class="author-site-search-link last"><a href="/search/author1%3AJia%2BHui%2BNg%2B" rel="nofollow" class="" data-icon-position="" data-hide-link-title="0">Search for this author on this site</a></li></ul></div><div class="author-tooltip-2"><div class="author-tooltip-name">Lishya Liauw </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'>From the Department of Neuroradiology (SWK, LL), Singapore General Hospital, Singapore, Singapore; Department of Otorhinolaryngology-Head and Neck Surgery (JHN, VYJT), Singapore General Hospital, Singapore, Singapore; Department of Otorhinolaryngology, Tsueng Kwan O Hospital, Hong Kong, China; SingHealth Duke-NUS Academic Medical Centre (SWK, JHN, LL, VYJT), Singapore, Singapore.</div></span></div><ul class="author-tooltip-find-more"><li class="author-tooltip-gs-link first"><a href="/lookup/google-scholar?link_type=googlescholar&amp;gs_type=author&amp;author%5B0%5D=Lishya%2BLiauw%2B" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on Google Scholar</a></li><li class="author-tooltip-pubmed-link"><a href="/lookup/external-ref?access_num=Liauw%20L&amp;link_type=AUTHORSEARCH" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on PubMed</a></li><li class="author-site-search-link last"><a href="/search/author1%3ALishya%2BLiauw%2B" rel="nofollow" class="" data-icon-position="" data-hide-link-title="0">Search for this author on this site</a></li></ul></div><div class="author-tooltip-3"><div class="author-tooltip-name">Vanessa Yee Jueen Tan </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'>From the Department of Neuroradiology (SWK, LL), Singapore General Hospital, Singapore, Singapore; Department of Otorhinolaryngology-Head and Neck Surgery (JHN, VYJT), Singapore General Hospital, Singapore, Singapore; Department of Otorhinolaryngology, Tsueng Kwan O Hospital, Hong Kong, China; SingHealth Duke-NUS Academic Medical Centre (SWK, JHN, LL, VYJT), Singapore, Singapore.</div></span></div><ul class="author-tooltip-find-more"><li class="author-tooltip-gs-link first"><a href="/lookup/google-scholar?link_type=googlescholar&amp;gs_type=author&amp;author%5B0%5D=Vanessa%2BYee%2BJueen%2BTan%2B" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on Google Scholar</a></li><li class="author-tooltip-pubmed-link"><a href="/lookup/external-ref?access_num=Tan%20VY&amp;link_type=AUTHORSEARCH" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on PubMed</a></li><li class="author-site-search-link last"><a href="/search/author1%3AVanessa%2BYee%2BJueen%2BTan%2B" rel="nofollow" class="" data-icon-position="" data-hide-link-title="0">Search for this author on this site</a></li></ul></div><div class="author-tooltip-4"><div class="author-tooltip-name">Jiun Fong Thong </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'>From the Department of Neuroradiology (SWK, LL), Singapore General Hospital, Singapore, Singapore; Department of Otorhinolaryngology-Head and Neck Surgery (JHN, VYJT), Singapore General Hospital, Singapore, Singapore; Department of Otorhinolaryngology, Tsueng Kwan O Hospital, Hong Kong, China; SingHealth Duke-NUS Academic Medical Centre (SWK, JHN, LL, VYJT), Singapore, Singapore.</div></span></div><ul class="author-tooltip-find-more"><li class="author-tooltip-gs-link first"><a href="/lookup/google-scholar?link_type=googlescholar&amp;gs_type=author&amp;author%5B0%5D=Jiun%2BFong%2BThong%2B" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on Google Scholar</a></li><li class="author-tooltip-pubmed-link"><a href="/lookup/external-ref?access_num=Thong%20JF&amp;link_type=AUTHORSEARCH" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on PubMed</a></li><li class="author-site-search-link last"><a href="/search/author1%3AJiun%2BFong%2BThong%2B" rel="nofollow" class="" data-icon-position="" data-hide-link-title="0">Search for this author on this site</a></li></ul></div></div></div>  </div>

  
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    <div class="highwire-markup"><div xmlns="http://www.w3.org/1999/xhtml" data-highwire-cite-ref-tooltip-instance="highwire_reflinks_tooltip" class="content-block-markup" xmlns:xhtml="http://www.w3.org/1999/xhtml"><div class="article abstract-view "><span class="highwire-journal-article-marker-start"></span><div class="section abstract" id="abstract-1"><h2 class="">ABSTRACT</h2><div id="sec-1" class="subsection"><p id="p-2"><strong>BACKGROUND AND PURPOSE:</strong> Cochlear implant surgery is performed commonly through the facial recess via the round window (RW) approach. This study aims to evaluate the utility of reformatting the pre-operative CT temporal bone scan into a CT facial recess view in alerting surgeons to a potentially difficult surgery with poorly visualized round window.</p></div><div id="sec-2" class="subsection"><p id="p-3"><strong>MATERIALS AND METHODS:</strong> This is a retrospective study of 41 patients (43 ears), who had undergone cochlear implant surgery. Intraoperative findings of round window position relative to 2nd genu-mastoid portion of facial nerve, and round window membrane orientation were recorded by the surgeons. Pre-operative CTs were analyzed by two radiologists in axial and a reformatted facial recess plane that simulates the surgeon's view via the facial recess. Radiological assessment markers include the facial nerve-chorda tympani nerve width (FN-CTN) measured 1.2mm inferior to the exit point of the chorda tympani nerve into the tympanic cavity, round window position relative to 2<sup>nd</sup> genu-mastoid segment of the facial nerve and RW membrane's angle from the vertical axis.</p></div><div id="sec-3" class="subsection"><p id="p-4"><strong>RESULTS:</strong> The best predictor for difficult round window intraoperative visibility is the RW position relative to the 2nd genu-mastoid segment of the facial nerve lying lateral to it on CT facial recess reformatted images. A RW that lies partially to completely posterior to the posterior border of the 2<sup>nd</sup> genu-mastoid segment of the facial nerve had up to 55.6% risk of encountering difficult access, while those positioned anterior to or partially anterior to the anterior edge of the 2<sup>nd</sup> genu-mastoid segment of the facial nerve had 0% risk of difficult access (p&lt;0.05). There are substantial agreements in the intra-rater (Kappa=0.751, p&lt;0.001) and inter-rater reliability (Kappa= 0.698, p&lt;0.001). There is no significant association between surgical difficulty and facial nerve-chorda tympani distance or RW angle (p&gt;0.05).</p></div><div id="sec-4" class="subsection"><p id="p-5"><strong>CONCLUSIONS:</strong> Identification of round window positions in the reformatted CT facial recess view is a useful tool in predicting potentially difficult round window access in cochlear implant surgery.</p><p id="p-6">ABBREVIATIONS: RW= Round window, FN-CTN= facial nerve to chorda tympani nerve width</p></div></div><div class="section fn-group" id="fn-group-1"><h2>Footnotes</h2><ul><li class="fn-conflict" id="fn-1"><p id="p-1">The authors declare no conflicts of interest related to the content of this article.</p></li></ul></div><ul class="copyright-statement"><li class="fn" id="copyright-statement-1">© 2024 by American Journal of Neuroradiology</li></ul><span class="highwire-journal-article-marker-end"></span></div><span class="related-urls"></span></div></div>  </div>

  
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      <div class="highwire-cite-title">Prediction of difficult round window visibility during cochlear implantation via a reformatted CT facial recess view: A retrospective study with surgical correlation</div>  
    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0"><span class="nlm-given-names">Si Wei</span> <span class="nlm-surname">Kheok</span></span>, <span class="highwire-citation-author" data-delta="1"><span class="nlm-given-names">Jia Hui</span> <span class="nlm-surname">Ng</span></span>, <span class="highwire-citation-author" data-delta="2"><span class="nlm-given-names">Lishya</span> <span class="nlm-surname">Liauw</span></span>, <span class="highwire-citation-author" data-delta="3"><span class="nlm-given-names">Vanessa Yee Jueen</span> <span class="nlm-surname">Tan</span></span>, <span class="highwire-citation-author" data-delta="4"><span class="nlm-given-names">Jiun Fong</span> <span class="nlm-surname">Thong</span></span></span></div>
  
    	<div class="highwire-cite-metadata"><span  class="highwire-cite-metadata-journal highwire-cite-metadata">American Journal of Neuroradiology </span><span  class="highwire-cite-metadata-date highwire-cite-metadata">Sep 2024, </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">ajnr.A8503; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata"><span class="label">DOI:</span> 10.3174/ajnr.A8503 </span></div>
  
  
  
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      <div class="highwire-cite-title">Prediction of difficult round window visibility during cochlear implantation via a reformatted CT facial recess view: A retrospective study with surgical correlation</div>  
    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0"><span class="nlm-given-names">Si Wei</span> <span class="nlm-surname">Kheok</span></span>, <span class="highwire-citation-author" data-delta="1"><span class="nlm-given-names">Jia Hui</span> <span class="nlm-surname">Ng</span></span>, <span class="highwire-citation-author" data-delta="2"><span class="nlm-given-names">Lishya</span> <span class="nlm-surname">Liauw</span></span>, <span class="highwire-citation-author" data-delta="3"><span class="nlm-given-names">Vanessa Yee Jueen</span> <span class="nlm-surname">Tan</span></span>, <span class="highwire-citation-author" data-delta="4"><span class="nlm-given-names">Jiun Fong</span> <span class="nlm-surname">Thong</span></span></span></div>
  
    	<div class="highwire-cite-metadata"><span  class="highwire-cite-metadata-journal highwire-cite-metadata">American Journal of Neuroradiology </span><span  class="highwire-cite-metadata-date highwire-cite-metadata">Sep 2024, </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">ajnr.A8503; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata"><span class="label">DOI:</span> 10.3174/ajnr.A8503 </span></div>
  
  
  
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