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<meta name="DC.Description" content="In the first part of this investigation, 216 consecutive carotid angiograms from 108 patients were reviewed to analyze variations of the anterior choroidal artery (AChA) for the origin, size, and course of the stem and for the possible identification of the uncal branch, perforating branches, and plexal segment of the AChA. In the second part of our investigation, we analyzed anomalies of the AChA seen on angiography. The anomalies of this artery were divided into hypoplastic and hyperplastic types, with prevalences of 3% and 2.3%, respectively, as determined from 216 control carotid angiograms. Hypoplasia of the plexal segment of this artery might represent an evolutionary variant in which the artery ceased to acquire choroidal branches, thus remaining in the reptilian stage. Twenty-five hyperplastic anomalous arteries that supplied a part of the distribution of the posterior cerebral artery were found not only on the 216 control angiograms (five arteries), but also on 2000 carotid angiograms obtained over 8 years (20 arteries). The hyperplastic arteries were further classified into subtypes according to the distribution area and course of the vessel. The hyperplastic anomalies are considered to represent a situation in which the AChA has maintained, as a main pathway, an anastomosis with the posterior communicating artery and posterior cerebral artery. Our detailed analysis of the variations and anomalies of the choroidal artery should be useful in the assessment of this territory." />
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      <h1 class="highwire-cite-title" id="page-title">Anterior choroidal artery: angiographic analysis of variations and anomalies.</h1>  
    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0">S Takahashi</span>, <span class="highwire-citation-author" data-delta="1">T Suga</span>, <span class="highwire-citation-author" data-delta="2">Y Kawata</span> and <span class="highwire-citation-author" data-delta="3">K Sakamoto</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">July 1990,  </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">11 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(4) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">719-729; </span></div>
  
  
  
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<div id="hw-article-author-popups-top-node-4867--6741210991" style="display: none;"><div class="author-tooltip-0"><div class="author-tooltip-name">S Takahashi </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'>Department of Radiology, Tohoku University School of Medicine, Sendai, Japan.</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=S%2BTakahashi%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=Takahashi%20S&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%3AS%2BTakahashi%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">T Suga </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'>Department of Radiology, Tohoku University School of Medicine, Sendai, Japan.</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%2BSuga%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=Suga%20T&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%3AT%2BSuga%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">Y Kawata </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'>Department of Radiology, Tohoku University School of Medicine, Sendai, Japan.</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=Y%2BKawata%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=Kawata%20Y&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%3AY%2BKawata%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">K Sakamoto </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'>Department of Radiology, Tohoku University School of Medicine, Sendai, Japan.</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=K%2BSakamoto%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=Sakamoto%20K&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%3AK%2BSakamoto%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-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0"><span class="nlm-given-names">S</span> <span class="nlm-surname">Takahashi</span></span>, <span class="highwire-citation-author" data-delta="1"><span class="nlm-given-names">T</span> <span class="nlm-surname">Suga</span></span>, <span class="highwire-citation-author" data-delta="2"><span class="nlm-given-names">Y</span> <span class="nlm-surname">Kawata</span></span>, <span class="highwire-citation-author" data-delta="3"><span class="nlm-given-names">K</span> <span class="nlm-surname">Sakamoto</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">Jul 1990, </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">11 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(4) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">719-729; </span></div>
  
  
  
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