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      <h1 class="highwire-cite-title" id="page-title">Coregistration and Fusion: An Easy and Reliable Method for Identifying Cranial Nerve IV on MRI</h1>  
    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0">A. Lecler</span>, <span class="highwire-citation-author" data-delta="1">J. Savatovsky</span> and <span class="highwire-citation-author" data-delta="2">F. Audren</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">October 2017,  </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">38 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(10) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">E81-E82; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata">DOI: https://doi.org/10.3174/ajnr.A5286 </span></div>
  
  
  
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<div id="hw-article-author-popups-top-node-56225--61161154529" style="display: none;"><div class="author-tooltip-0"><div class="author-tooltip-name">A. Lecler </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>Department of Radiology</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=A.%2BLecler%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=Lecler%20A&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"><a href="/search/author1%3AA.%2BLecler%2B" rel="nofollow" class="" data-icon-position="" data-hide-link-title="0">Search for this author on this site</a></li><li class="author-orcid-link last"><a href="http://orcid.org/0000-0001-7869-1815" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for A. Lecler</a></li></ul></div><div class="author-tooltip-1"><div class="author-tooltip-name">J. Savatovsky </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>Department of Radiology</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=J.%2BSavatovsky%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=Savatovsky%20J&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"><a href="/search/author1%3AJ.%2BSavatovsky%2B" rel="nofollow" class="" data-icon-position="" data-hide-link-title="0">Search for this author on this site</a></li><li class="author-orcid-link last"><a href="http://orcid.org/0000-0002-6732-1779" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for J. Savatovsky</a></li></ul></div><div class="author-tooltip-2"><div class="author-tooltip-name">F. Audren </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>b</span>Department of Ophthalmology
Fondation Ophtalmologique Adolphe de Rothschild
Paris, France</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=F.%2BAudren%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=Audren%20F&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"><a href="/search/author1%3AF.%2BAudren%2B" rel="nofollow" class="" data-icon-position="" data-hide-link-title="0">Search for this author on this site</a></li><li class="author-orcid-link last"><a href="http://orcid.org/0000-0003-1371-4013" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for F. Audren</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 fulltext-view "><span class="highwire-journal-article-marker-start"></span><p id="p-1">We read with much interest the article by Bunch et al<sup><a id="xref-ref-1-1" class="xref-bibr" href="#ref-1">1</a></sup> in the March 2017 issue of the <em>American Journal of Neuroradiology</em>, in which they described the trochlear groove and trochlear cistern as reliable anatomic landmarks when searching for the tentorial segment of cranial nerve IV on MR imaging. The authors provided useful indications to recognize these 2 structures with a T2-weighted driven equilibrium radiofrequency reset pulse sequence. Confirming these 2 landmarks was significantly associated with correctly identifying the trochlear nerve.</p><p id="p-2">We agree that short sequences are more practical for routine clinical use as opposed to those previously reported in the literature using high-resolution motion-sensitized driven equilibrium sequences with a 26-minute acquisition time.<sup><a id="xref-ref-2-1" class="xref-bibr" href="#ref-2">2</a></sup> This sequence use is particularly true for cranial nerve IV imaging because a substantial number of patients being evaluated for suspected trochlear nerve pathology, including congenital palsy, are children, who are more prone to movements than adults. Therefore, a long scanning time may exacerbate motion artifacts on MR images.</p><p id="p-3">However, we believe that this study has a few limitations that may impair its scope. The trochlear nerve remains the thinnest of all cranial nerves, with a mean diameter of approximately 0.5 mm (range, 0.3–0.9 mm). It has a complex course around the midbrain and is in close proximity to many arteries and veins with similar courses and calibers. The voxel size acquired in this study ranged from 0.3 × 0.35 × 3.0 to 0.4 × 0.44 × 3.0; thus, the section thickness (resolution of the z-axis) provided was 3.0 mm, which is too large to identify the trochlear nerve consistently. Moreover, the gap ranged from 0.3 to 1 mm, which is too high to observe a 0.5-mm structure.<sup><a id="xref-ref-3-1" class="xref-bibr" href="#ref-3">3</a></sup> Much thinner sections are required to visualize the trochlear nerve, with a maximum of 0.25-mm section thickness and no gap.</p><p id="p-4">The imaging findings of this study remain subjective and are not supported by surgical or pathologic correlations. Additionally, significant discrepancies between the MR imaging and anatomic findings were reported in cadaveric studies. Our colleagues' images are somewhat noisy, with CSF flow-related artifacts and are therefore not very convincing, even with annotations.</p><p id="p-5">An interesting option for reliably identifying cranial nerve IV on MR imaging within a reasonable acquisition time may be the use of coregistration and fusion<sup><a id="xref-ref-4-1" class="xref-bibr" href="#ref-4">4</a></sup> of an MR angiography sequence and of a “routine” T2-weighted driven equilibrium radiofrequency reset pulse sequence. Regrettably, even a very high resolution may still be insufficient due to the very complex course of the nerve and its close proximity to adjacent vessels. MRA enables the reader to clearly and reliably identify both arteries and veins, despite their highly variable anatomy. Therefore, this technique supports correct identification of the closely related trochlear nerve (<a id="xref-fig-1-1" class="xref-fig" href="#F1">Figure</a>). This method is easy and is available in various software packages. A long posttreatment process is not necessary, and it can be performed during routine clinical practice in many institutions without involving highly specialized providers. With this method, all segments of the trochlear nerve are visible, especially its tentorial segment where the nerve is parallel to the vessels and runs along the tentorial edge. This approach may also be used successfully on larger cranial nerves such as the oculomotor or the abducens nerves.</p><div id="F1" class="fig pos-float  odd"><div class="highwire-figure"><div class="fig-inline-img-wrapper"><div class="fig-inline-img"><a href="http://ajnr-stage2.stage.highwire.org/content/ajnr/38/10/E81/F1.large.jpg?width=800&amp;height=600&amp;carousel=1" title="Coregistration-fusion of an MR angiography and a T2-weighted driven equilibrium radiofrequency reset pulse sequence allowing to distinguish cisternal vessels colored in white from the trochlear nerves in black (arrows)." class="highwire-fragment fragment-images colorbox-load" rel="gallery-fragment-images-1573054000" data-figure-caption="&lt;div class=&quot;highwire-markup&quot;&gt;&lt;div xmlns=&quot;http://www.w3.org/1999/xhtml&quot;&gt;Coregistration-fusion of an MR angiography and a T2-weighted driven equilibrium radiofrequency reset pulse sequence allowing to distinguish cisternal vessels colored in white from the trochlear nerves in black (&lt;em&gt;arrows&lt;/em&gt;).&lt;/div&gt;&lt;/div&gt;" data-icon-position="" data-hide-link-title="0"><span class="hw-responsive-img"><img class="highwire-fragment fragment-image lazyload" alt="Figure." src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://ajnr-stage2.stage.highwire.org/content/ajnr/38/10/E81/F1.medium.gif" width="422" height="440"/><noscript><img class="highwire-fragment fragment-image" alt="Figure." src="http://ajnr-stage2.stage.highwire.org/content/ajnr/38/10/E81/F1.medium.gif" width="422" height="440"/></noscript></span></a></div></div><ul class="highwire-figure-links inline"><li class="download-fig first"><a href="http://ajnr-stage2.stage.highwire.org/content/ajnr/38/10/E81/F1.large.jpg?download=true" class="highwire-figure-link highwire-figure-link-download" title="Download Figure." data-icon-position="" data-hide-link-title="0">Download figure</a></li><li class="new-tab"><a href="http://ajnr-stage2.stage.highwire.org/content/ajnr/38/10/E81/F1.large.jpg" class="highwire-figure-link highwire-figure-link-newtab" target="_blank" data-icon-position="" data-hide-link-title="0">Open in new tab</a></li><li class="download-ppt last"><a href="/highwire/powerpoint/56409" class="highwire-figure-link highwire-figure-link-ppt" data-icon-position="" data-hide-link-title="0">Download powerpoint</a></li></ul></div><div class="fig-caption" xmlns:xhtml="http://www.w3.org/1999/xhtml"><span class="fig-label">Figure.</span> <p id="p-6" class="first-child">Coregistration-fusion of an MR angiography and a T2-weighted driven equilibrium radiofrequency reset pulse sequence allowing to distinguish cisternal vessels colored in white from the trochlear nerves in black (<em>arrows</em>).</p><div class="sb-div caption-clear"></div></div></div><p id="p-7">Finally, it is possible that the key for reliable and accurate identification of the trochlear nerve may be the use of a simple coregistration and fusion instead of long and complex high-resolution MR imaging acquisitions.</p><div class="section fn-group" id="fn-group-1"><h2>Footnotes</h2><ul><li class="fn-financial-disclosure" id="fn-1"><p id="p-8">Disclosures: Julien Savatovsky—<em>UNRELATED</em>: <em>Consultancy</em>: Servier International Re-search Institute (IRIS), Madday Pharmaceutical, Bristol-Myers Squibb, GlaxoSmithKline, <em>Comments</em>: All except IRIS paid me around $5000 2 years ago*; <em>Expert Testimony</em>: Philips Healthcare, Bayer Pharmaceutical; <em>Grants/Grants Pending</em>: Association de la Recherche Sur le Syndrome Immuno-Déficitaire Acqui*; <em>Payment for Lectures Including Service on Speakers Bureaus</em>: Philips Healthcare, IRIS, Biogen; <em>Travel/Accommodations/Meeting Expenses Unrelated to Activities Listed</em>: GE Healthcare, Philips, Bayer. *Money paid to the institution.</p></li></ul></div><div class="section ref-list" id="ref-list-1"><h2 class="">References</h2><ol class="cit-list ref-use-labels"><li><span class="ref-label">1.</span><a class="rev-xref-ref" href="#xref-ref-1-1" title="View reference 1. in text" id="ref-1">↵</a><div class="cit ref-cit ref-journal" id="cit-38.10.E81.1" data-doi="10.3174/ajnr.A5117"><div class="cit-metadata"><ol class="cit-auth-list"><li>
</li><li><span class="cit-auth"><span class="cit-name-surname">Bunch</span>  <span class="cit-name-given-names">PM</span></span>, </li><li><span class="cit-auth"><span class="cit-name-surname">Kelly</span>  <span class="cit-name-given-names">HR</span></span>, </li><li><span class="cit-auth"><span class="cit-name-surname">Zander</span>  <span class="cit-name-given-names">DA</span></span>, <span class="cit-etal">et al</span></li></ol><cite>. <span class="cit-article-title">Trochlear groove and trochlear cistern: useful anatomic landmarks for identifying the tentorial segment of cranial nerve IV on MRI</span>. <abbr class="cit-jnl-abbrev">AJNR Am J Neuroradiol</abbr> <span class="cit-pub-date">2017</span>;<span class="cit-vol">38</span>:<span class="cit-fpage">1026</span>–<span class="cit-lpage">30</span><span class="cit-pub-id-sep cit-pub-id-doi-sep"> </span><span class="cit-pub-id cit-pub-id-doi"><span class="cit-pub-id-scheme-doi">doi:</span>10.3174/ajnr.A5117</span><span class="cit-pub-id-sep cit-pub-id-pmid-sep"> </span><span class="cit-pub-id cit-pub-id-pmid"><span class="cit-pub-id-scheme-pmid">pmid:</span>28302606</span></cite></div><div class="cit-extra"><a href="/lookup/ijlink/YTozOntzOjQ6InBhdGgiO3M6MTQ6Ii9sb29rdXAvaWpsaW5rIjtzOjU6InF1ZXJ5IjthOjQ6e3M6ODoibGlua1R5cGUiO3M6NDoiQUJTVCI7czoxMToiam91cm5hbENvZGUiO3M6NDoiYWpuciI7czo1OiJyZXNpZCI7czo5OiIzOC81LzEwMjYiO3M6NDoiYXRvbSI7czoyMDoiL2FqbnIvMzgvMTAvRTgxLmF0b20iO31zOjg6ImZyYWdtZW50IjtzOjA6IiI7fQ==" class="cit-ref-sprinkles cit-ref-sprinkles-ijlink"><span><span class="cit-reflinks-abstract">Abstract</span><span class="cit-sep cit-reflinks-variant-name-sep">/</span><span class="cit-reflinks-full-text"><span class="free-full-text">FREE </span>Full Text</span></span></a></div></div></li><li><span class="ref-label">2.</span><a class="rev-xref-ref" href="#xref-ref-2-1" title="View reference 2. in text" id="ref-2">↵</a><div class="cit ref-cit ref-journal" id="cit-38.10.E81.2" data-doi="10.3174/ajnr.A3403"><div class="cit-metadata"><ol class="cit-auth-list"><li>
</li><li><span class="cit-auth"><span class="cit-name-surname">Kanoto</span>  <span class="cit-name-given-names">M</span></span>, </li><li><span class="cit-auth"><span class="cit-name-surname">Toyoguchi</span>  <span class="cit-name-given-names">Y</span></span>, </li><li><span class="cit-auth"><span class="cit-name-surname">Hosoya</span>  <span class="cit-name-given-names">T</span></span>, <span class="cit-etal">et al</span></li></ol><cite>. <span class="cit-article-title">Visualization of the trochlear nerve in the cistern with use of high-resolution turbo spin-echo multisection motion-sensitized driven equilibrium</span>. <abbr class="cit-jnl-abbrev">AJNR Am J Neuroradiol</abbr> <span class="cit-pub-date">2013</span>;<span class="cit-vol">34</span>:<span class="cit-fpage">1434</span>–<span class="cit-lpage">37</span><span class="cit-pub-id-sep cit-pub-id-doi-sep"> </span><span class="cit-pub-id cit-pub-id-doi"><span class="cit-pub-id-scheme-doi">doi:</span>10.3174/ajnr.A3403</span><span class="cit-pub-id-sep cit-pub-id-pmid-sep"> </span><span class="cit-pub-id cit-pub-id-pmid"><span class="cit-pub-id-scheme-pmid">pmid:</span>23391840</span></cite></div><div class="cit-extra"><a href="/lookup/ijlink/YTozOntzOjQ6InBhdGgiO3M6MTQ6Ii9sb29rdXAvaWpsaW5rIjtzOjU6InF1ZXJ5IjthOjQ6e3M6ODoibGlua1R5cGUiO3M6NDoiQUJTVCI7czoxMToiam91cm5hbENvZGUiO3M6NDoiYWpuciI7czo1OiJyZXNpZCI7czo5OiIzNC83LzE0MzQiO3M6NDoiYXRvbSI7czoyMDoiL2FqbnIvMzgvMTAvRTgxLmF0b20iO31zOjg6ImZyYWdtZW50IjtzOjA6IiI7fQ==" class="cit-ref-sprinkles cit-ref-sprinkles-ijlink"><span><span class="cit-reflinks-abstract">Abstract</span><span class="cit-sep cit-reflinks-variant-name-sep">/</span><span class="cit-reflinks-full-text"><span class="free-full-text">FREE </span>Full Text</span></span></a></div></div></li><li><span class="ref-label">3.</span><a class="rev-xref-ref" href="#xref-ref-3-1" title="View reference 3. in text" id="ref-3">↵</a><div class="cit ref-cit ref-journal" id="cit-38.10.E81.3" data-doi="10.3174/ajnr.A1992"><div class="cit-metadata"><ol class="cit-auth-list"><li>
</li><li><span class="cit-auth"><span class="cit-name-surname">Choi</span>  <span class="cit-name-given-names">BS</span></span>, </li><li><span class="cit-auth"><span class="cit-name-surname">Kim</span>  <span class="cit-name-given-names">JH</span></span>, </li><li><span class="cit-auth"><span class="cit-name-surname">Jung</span>  <span class="cit-name-given-names">C</span></span>, <span class="cit-etal">et al</span></li></ol><cite>. <span class="cit-article-title">High-resolution 3D MR imaging of the trochlear nerve</span>. <abbr class="cit-jnl-abbrev">AJNR Am J Neuroradiol</abbr> <span class="cit-pub-date">2010</span>;<span class="cit-vol">31</span>:<span class="cit-fpage">1076</span>–<span class="cit-lpage">79</span><span class="cit-pub-id-sep cit-pub-id-doi-sep"> </span><span class="cit-pub-id cit-pub-id-doi"><span class="cit-pub-id-scheme-doi">doi:</span>10.3174/ajnr.A1992</span><span class="cit-pub-id-sep cit-pub-id-pmid-sep"> </span><span class="cit-pub-id cit-pub-id-pmid"><span class="cit-pub-id-scheme-pmid">pmid:</span>20093316</span></cite></div><div class="cit-extra"><a href="/lookup/ijlink/YTozOntzOjQ6InBhdGgiO3M6MTQ6Ii9sb29rdXAvaWpsaW5rIjtzOjU6InF1ZXJ5IjthOjQ6e3M6ODoibGlua1R5cGUiO3M6NDoiQUJTVCI7czoxMToiam91cm5hbENvZGUiO3M6NDoiYWpuciI7czo1OiJyZXNpZCI7czo5OiIzMS82LzEwNzYiO3M6NDoiYXRvbSI7czoyMDoiL2FqbnIvMzgvMTAvRTgxLmF0b20iO31zOjg6ImZyYWdtZW50IjtzOjA6IiI7fQ==" class="cit-ref-sprinkles cit-ref-sprinkles-ijlink"><span><span class="cit-reflinks-abstract">Abstract</span><span class="cit-sep cit-reflinks-variant-name-sep">/</span><span class="cit-reflinks-full-text"><span class="free-full-text">FREE </span>Full Text</span></span></a></div></div></li><li><span class="ref-label">4.</span><a class="rev-xref-ref" href="#xref-ref-4-1" title="View reference 4. in text" id="ref-4">↵</a><div class="cit ref-cit ref-journal" id="cit-38.10.E81.4" data-doi="10.1155/2013/902470"><div class="cit-metadata"><ol class="cit-auth-list"><li>
</li><li><span class="cit-auth"><span class="cit-name-surname">Liu</span>  <span class="cit-name-given-names">P</span></span>, </li><li><span class="cit-auth"><span class="cit-name-surname">Eberhardt</span>  <span class="cit-name-given-names">B</span></span>, </li><li><span class="cit-auth"><span class="cit-name-surname">Wybranski</span>  <span class="cit-name-given-names">C</span></span>, <span class="cit-etal">et al</span></li></ol><cite>. <span class="cit-article-title">Nonrigid 3D medical image registration and fusion based on deformable models</span>. <abbr class="cit-jnl-abbrev">Comput Math Methods Med</abbr> <span class="cit-pub-date">2013</span>;<span class="cit-vol">2013</span>:<span class="cit-fpage">902470</span><span class="cit-pub-id-sep cit-pub-id-doi-sep"> </span><span class="cit-pub-id cit-pub-id-doi"><span class="cit-pub-id-scheme-doi">doi:</span>10.1155/2013/902470</span><span class="cit-pub-id-sep cit-pub-id-pmid-sep"> </span><span class="cit-pub-id cit-pub-id-pmid"><span class="cit-pub-id-scheme-pmid">pmid:</span>23690883</span></cite></div><div class="cit-extra"><a href="/lookup/external-ref?access_num=10.1155/2013/902470&amp;link_type=DOI" class="cit-ref-sprinkles cit-ref-sprinkles-doi cit-ref-sprinkles-crossref"><span>CrossRef</span></a><a href="/lookup/external-ref?access_num=23690883&amp;link_type=MED&amp;atom=%2Fajnr%2F38%2F10%2FE81.atom" class="cit-ref-sprinkles cit-ref-sprinkles-medline"><span>PubMed</span></a></div></div></li></ol></div><ul class="copyright-statement"><li class="fn" id="copyright-statement-1">© 2017 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-metadata"><span  class="highwire-cite-metadata-volume highwire-cite-metadata">Vol. 38</span>, <span  class="highwire-cite-metadata-issue highwire-cite-metadata">Issue 10 </span><div  class="highwire-cite-metadata-pubdate highwire-cite-metadata">1 Oct 2017 </div></div>
      
      
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    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0"><span class="nlm-given-names">A.</span> <span class="nlm-surname">Lecler</span></span>, <span class="highwire-citation-author" data-delta="1"><span class="nlm-given-names">J.</span> <span class="nlm-surname">Savatovsky</span></span>, <span class="highwire-citation-author" data-delta="2"><span class="nlm-given-names">F.</span> <span class="nlm-surname">Audren</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">Oct 2017, </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">38 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(10) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">E81-E82; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata"><span class="label">DOI:</span> 10.3174/ajnr.A5286 </span></div>
  
  
  
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      <div class="highwire-cite-title">Coregistration and Fusion: An Easy and Reliable Method for Identifying Cranial Nerve IV on MRI</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">A.</span> <span class="nlm-surname">Lecler</span></span>, <span class="highwire-citation-author" data-delta="1"><span class="nlm-given-names">J.</span> <span class="nlm-surname">Savatovsky</span></span>, <span class="highwire-citation-author" data-delta="2"><span class="nlm-given-names">F.</span> <span class="nlm-surname">Audren</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">Oct 2017, </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">38 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(10) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">E81-E82; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata"><span class="label">DOI:</span> 10.3174/ajnr.A5286 </span></div>
  
  
  
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