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    <div class="highwire-article-citation highwire-citation-type-highwire-article node96080--7" data-node-nid="96080" id="top-node-96080--81320816682" data-pisa="ajnr;43/3/E4" data-pisa-master="ajnr;ajnr.A7454" data-apath="/ajnr/43/3/E4.atom" data-hw-author-tooltip-instance="highwire_author_tooltip"><div class="highwire-cite highwire-cite-highwire-article highwire-citation-jcore-article-title-complete clearfix has-author-tooltip highwire-citation-highwire-article-top-a">
  
  
      <div class="highwire-cite-overline"><span  class="highwire-cite-metadata-article-type highwire-cite-metadata">Reply</span><span class="separator-pipe"></span><span  class="highwire-cite-metadata-art-cat highwire-cite-metadata"><span class="wrapper">LETTER</span></span></div>
  
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    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0">J. Raymond</span>, <span class="highwire-citation-author" data-delta="1">L. Létourneau-Guillon</span>, <span class="highwire-citation-author" data-delta="2">T. E. Darsaut</span>, <span class="highwire-citation-author" data-delta="3">J. M. Findlay</span>, <span class="highwire-citation-author" data-delta="4">M. M. Chow</span>, <span class="highwire-citation-author" data-delta="5">M. B. Keough</span>, <span class="highwire-citation-author" data-delta="6">A. M. Chan</span>, <span class="highwire-citation-author" data-delta="7">Bezhad Farzin</span>, <span class="highwire-citation-author" data-delta="8">G. Gevry</span>, <span class="highwire-citation-author" data-delta="9">M. Chagnon</span> and <span class="highwire-citation-author" data-delta="10">J. Zehr</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">March 2022,  </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">43 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(3) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">E4; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata">DOI: https://doi.org/10.3174/ajnr.A7454 </span></div>
  
  
  
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<div id="hw-article-author-popups-top-node-96080--81320816682" style="display: none;"><div class="author-tooltip-0"><div class="author-tooltip-name">J. Raymond </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>Department of Radiology, Neuroradiology Service Centre Hospitalier de l’Université de Montréal (CHUM), Montreal Quebec, CanadaCHUM Research Centre, MontrealQuebec, Canada</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.%2BRaymond%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=Raymond%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.%2BRaymond%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="https://orcid.org/0000-0003-1978-4274" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for J. Raymond</a></li></ul></div><div class="author-tooltip-1"><div class="author-tooltip-name">L. Létourneau-Guillon </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>Department of Radiology, Neuroradiology Service Centre Hospitalier de l’Université de Montréal (CHUM), Montreal Quebec, CanadaCHUM Research Centre, MontrealQuebec, Canada</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=L.%2BL%C3%A9tourneau-Guillon%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=L%C3%A9tourneau-Guillon%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"><a href="/search/author1%3AL.%2BL%25C3%25A9tourneau-Guillon%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="https://orcid.org/0000-0002-6325-7538" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for L. Létourneau-Guillon</a></li></ul></div><div class="author-tooltip-2"><div class="author-tooltip-name">T. E. Darsaut </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>b</span>Department of Surgery, Division of Neurosurgery University of Alberta hospital, Mackenzie Health Sciences Center, EdmontonAlberta, Canada</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=T.%2BE.%2BDarsaut%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=Darsaut%20TE&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%3AT.%2BE.%2BDarsaut%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="https://orcid.org/0000-0003-4662-1550" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for T. E. Darsaut</a></li></ul></div><div class="author-tooltip-3"><div class="author-tooltip-name">J. M. Findlay </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>b</span>Department of Surgery, Division of Neurosurgery University of Alberta hospital, Mackenzie Health Sciences Center, EdmontonAlberta, Canada</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.%2BM.%2BFindlay%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=Findlay%20JM&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.%2BM.%2BFindlay%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="https://orcid.org/0000-0002-4842-3905" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for J. M. Findlay</a></li></ul></div><div class="author-tooltip-4"><div class="author-tooltip-name">M. M. Chow </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>b</span>Department of Surgery, Division of Neurosurgery University of Alberta hospital, Mackenzie Health Sciences Center, EdmontonAlberta, Canada</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=M.%2BM.%2BChow%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=Chow%20MM&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%3AM.%2BM.%2BChow%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="https://orcid.org/0000-0002-8074-3511" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for M. M. Chow</a></li></ul></div><div class="author-tooltip-5"><div class="author-tooltip-name">M. B. Keough </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>b</span>Department of Surgery, Division of Neurosurgery University of Alberta hospital, Mackenzie Health Sciences Center, EdmontonAlberta, Canada</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=M.%2BB.%2BKeough%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=Keough%20MB&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%3AM.%2BB.%2BKeough%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="https://orcid.org/0000-0001-5361-3327" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for M. B. Keough</a></li></ul></div><div class="author-tooltip-6"><div class="author-tooltip-name">A. M. Chan </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>b</span>Department of Surgery, Division of Neurosurgery University of Alberta hospital, Mackenzie Health Sciences Center, EdmontonAlberta, Canada</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.%2BM.%2BChan%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=Chan%20AM&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.%2BM.%2BChan%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="https://orcid.org/0000-0002-2487-4357" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for A. M. Chan</a></li></ul></div><div class="author-tooltip-7"><div class="author-tooltip-name">Bezhad Farzin </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>c</span>CHUM Research Centre, MontrealQuebec, Canada</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=Bezhad%2BFarzin%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=Farzin%20B&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%3ABezhad%2BFarzin%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="https://orcid.org/0000-0003-0420-1005" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for Bezhad Farzin</a></li></ul></div><div class="author-tooltip-8"><div class="author-tooltip-name">G. Gevry </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>c</span>CHUM Research Centre, MontrealQuebec, Canada</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=G.%2BGevry%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=Gevry%20G&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%3AG.%2BGevry%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="https://orcid.org/0000-0003-1982-3480" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for G. Gevry</a></li></ul></div><div class="author-tooltip-9"><div class="author-tooltip-name">M. Chagnon </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>d</span>Department of Mathematics and Statistics Université de Montréal, Montreal Quebec, Canada</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=M.%2BChagnon%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=Chagnon%20M&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%3AM.%2BChagnon%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="https://orcid.org/0000-0002-2291-9566" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for M. Chagnon</a></li></ul></div><div class="author-tooltip-10"><div class="author-tooltip-name">J. Zehr </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>d</span>Department of Mathematics and Statistics Université de Montréal, Montreal Quebec, Canada</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.%2BZehr%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=Zehr%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.%2BZehr%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="https://orcid.org/0000-0002-8295-4590" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for J. 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    	<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">Mar 2022, </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">43 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(3) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">E4; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata"><span class="label">DOI:</span> 10.3174/ajnr.A7454 </span></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">J.</span> <span class="nlm-surname">Raymond</span></span>, <span class="highwire-citation-author" data-delta="1"><span class="nlm-given-names">L.</span> <span class="nlm-surname">Létourneau-Guillon</span></span>, <span class="highwire-citation-author" data-delta="2"><span class="nlm-given-names">T. E.</span> <span class="nlm-surname">Darsaut</span></span>, <span class="highwire-citation-author" data-delta="3"><span class="nlm-given-names">J. M.</span> <span class="nlm-surname">Findlay</span></span>, <span class="highwire-citation-author" data-delta="4"><span class="nlm-given-names">M. M.</span> <span class="nlm-surname">Chow</span></span>, <span class="highwire-citation-author" data-delta="5"><span class="nlm-given-names">M. B.</span> <span class="nlm-surname">Keough</span></span>, <span class="highwire-citation-author" data-delta="6"><span class="nlm-given-names">A. M.</span> <span class="nlm-surname">Chan</span></span>, <span class="highwire-citation-author" data-delta="7"><span class="nlm-given-names">Bezhad</span> <span class="nlm-surname">Farzin</span></span>, <span class="highwire-citation-author" data-delta="8"><span class="nlm-given-names">G.</span> <span class="nlm-surname">Gevry</span></span>, <span class="highwire-citation-author" data-delta="9"><span class="nlm-given-names">M.</span> <span class="nlm-surname">Chagnon</span></span>, <span class="highwire-citation-author" data-delta="10"><span class="nlm-given-names">J.</span> <span class="nlm-surname">Zehr</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">Mar 2022, </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">43 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(3) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">E4; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata"><span class="label">DOI:</span> 10.3174/ajnr.A7454 </span></div>
  
  
  
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