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<meta name="DC.Title" content="MR angiography of ruptured aneurysms in acute subarachnoid hemorrhage." />
<meta name="DC.Date" content="1997-06-01" />
<meta name="DC.Publisher" content="American Journal of Neuroradiology" />
<meta name="DC.Rights" content="Copyright © American Society of Neuroradiology" />
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<meta name="DC.Description" content="PURPOSE To determine the efficacy of high-resolution MR angiography for the prospective diagnosis of ruptured aneurysms in acute subarachnoid hemorrhage.

METHODS We used 3-D time-of-flight MR angiography with a large image matrix (193 x 512 frequency-encoding steps), magnetization transfer saturation, and a variable flip-angle excitation (tilted optimized nonsaturating excitation [TONE]) to study 28 patients with acute subarachnoid hemorrhage. The MR angiograms were compared with intraarterial digital subtraction angiographic (IA-DSA) images.

RESULTS Thirty-five (90%) of 39 aneurysms were detected prospectively with MR angiography. At least one aneurysm was identified with MR angiography in 25 (96%) of 26 patients with aneurysms proved by IA-DSA. Although four aneurysms were missed prospectively, three of these were detected retrospectively with MR angiography. Six aneurysms (18%) of those evident on MR angiograms were 3 mm or less in diameter. In one patient, additional targeted maximum intensity projections were greatly helpful for the ensuing IA-DSA by determining the optimial projection angle by which to depict a ruptured aneurysm that neither routine MR angiography nor routine IA-DSA detected.

CONCLUSION High-resolution MR angiography may be a useful diagnostic technique for detecting ruptured aneurysms, even in patients with acute subarachnoid hemorrhage. Initial MR angiography offers valuable and reliable information on ruptured aneurysms in acute subarachnoid hemorrhage, allowing the optimization of projection angles at conventional angiography." />
<meta name="DC.Contributor" content="M Ida" />
<meta name="DC.Contributor" content="Y Kurisu" />
<meta name="DC.Contributor" content="M Yamashita" />
<meta name="article:published_time" content="1997-06-01" />
<meta name="citation_title" content="MR angiography of ruptured aneurysms in acute subarachnoid hemorrhage." />
<meta name="citation_abstract" lang="en" content="&lt;h3&gt;PURPOSE&lt;/h3&gt;
&lt;p&gt;To determine the efficacy of high-resolution MR angiography for the prospective diagnosis of ruptured aneurysms in acute subarachnoid hemorrhage.&lt;/p&gt;&lt;h3&gt;METHODS&lt;/h3&gt;
&lt;p&gt;We used 3-D time-of-flight MR angiography with a large image matrix (193 x 512 frequency-encoding steps), magnetization transfer saturation, and a variable flip-angle excitation (tilted optimized nonsaturating excitation [TONE]) to study 28 patients with acute subarachnoid hemorrhage. The MR angiograms were compared with intraarterial digital subtraction angiographic (IA-DSA) images.&lt;/p&gt;&lt;h3&gt;RESULTS&lt;/h3&gt;
&lt;p&gt;Thirty-five (90%) of 39 aneurysms were detected prospectively with MR angiography. At least one aneurysm was identified with MR angiography in 25 (96%) of 26 patients with aneurysms proved by IA-DSA. Although four aneurysms were missed prospectively, three of these were detected retrospectively with MR angiography. Six aneurysms (18%) of those evident on MR angiograms were 3 mm or less in diameter. In one patient, additional targeted maximum intensity projections were greatly helpful for the ensuing IA-DSA by determining the optimial projection angle by which to depict a ruptured aneurysm that neither routine MR angiography nor routine IA-DSA detected.&lt;/p&gt;&lt;h3&gt;CONCLUSION&lt;/h3&gt;
&lt;p&gt;High-resolution MR angiography may be a useful diagnostic technique for detecting ruptured aneurysms, even in patients with acute subarachnoid hemorrhage. Initial MR angiography offers valuable and reliable information on ruptured aneurysms in acute subarachnoid hemorrhage, allowing the optimization of projection angles at conventional angiography.&lt;/p&gt;" />
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<meta name="citation_author" content="M Ida" />
<meta name="citation_author" content="Y Kurisu" />
<meta name="citation_author" content="M Yamashita" />
<meta name="twitter:title" content="MR angiography of ruptured aneurysms in acute subarachnoid hemorrhage." />
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<meta name="twitter:description" content="PURPOSE To determine the efficacy of high-resolution MR angiography for the prospective diagnosis of ruptured aneurysms in acute subarachnoid hemorrhage.

METHODS We used 3-D time-of-flight MR angiography with a large image matrix (193 x 512 frequency-encoding steps), magnetization transfer saturation, and a variable flip-angle excitation (tilted optimized nonsaturating excitation [TONE]) to study 28 patients with acute subarachnoid hemorrhage. The MR angiograms were compared with intraarterial digital subtraction angiographic (IA-DSA) images.

RESULTS Thirty-five (90%) of 39 aneurysms were detected prospectively with MR angiography. At least one aneurysm was identified with MR angiography in 25 (96%) of 26 patients with aneurysms proved by IA-DSA. Although four aneurysms were missed prospectively, three of these were detected retrospectively with MR angiography. Six aneurysms (18%) of those evident on MR angiograms were 3 mm or less in diameter. In one patient, additional targeted maximum intensity projections were greatly helpful for the ensuing IA-DSA by determining the optimial projection angle by which to depict a ruptured aneurysm that neither routine MR angiography nor routine IA-DSA detected.

CONCLUSION High-resolution MR angiography may be a useful diagnostic technique for detecting ruptured aneurysms, even in patients with acute subarachnoid hemorrhage. Initial MR angiography offers valuable and reliable information on ruptured aneurysms in acute subarachnoid hemorrhage, allowing the optimization of projection angles at conventional angiography." />
<meta name="og-title" property="og:title" content="MR angiography of ruptured aneurysms in acute subarachnoid hemorrhage." />
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<meta name="og-description" property="og:description" content="PURPOSE To determine the efficacy of high-resolution MR angiography for the prospective diagnosis of ruptured aneurysms in acute subarachnoid hemorrhage.

METHODS We used 3-D time-of-flight MR angiography with a large image matrix (193 x 512 frequency-encoding steps), magnetization transfer saturation, and a variable flip-angle excitation (tilted optimized nonsaturating excitation [TONE]) to study 28 patients with acute subarachnoid hemorrhage. The MR angiograms were compared with intraarterial digital subtraction angiographic (IA-DSA) images.

RESULTS Thirty-five (90%) of 39 aneurysms were detected prospectively with MR angiography. At least one aneurysm was identified with MR angiography in 25 (96%) of 26 patients with aneurysms proved by IA-DSA. Although four aneurysms were missed prospectively, three of these were detected retrospectively with MR angiography. Six aneurysms (18%) of those evident on MR angiograms were 3 mm or less in diameter. In one patient, additional targeted maximum intensity projections were greatly helpful for the ensuing IA-DSA by determining the optimial projection angle by which to depict a ruptured aneurysm that neither routine MR angiography nor routine IA-DSA detected.

CONCLUSION High-resolution MR angiography may be a useful diagnostic technique for detecting ruptured aneurysms, even in patients with acute subarachnoid hemorrhage. Initial MR angiography offers valuable and reliable information on ruptured aneurysms in acute subarachnoid hemorrhage, allowing the optimization of projection angles at conventional angiography." />
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      <h1 class="highwire-cite-title" id="page-title">MR angiography of ruptured aneurysms in acute subarachnoid hemorrhage.</h1>  
    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0">M Ida</span>, <span class="highwire-citation-author" data-delta="1">Y Kurisu</span> and <span class="highwire-citation-author" data-delta="2">M Yamashita</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">June 1997,  </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">18 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(6) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">1025-1032; </span></div>
  
  
  
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<div id="hw-article-author-popups-top-node-4396--6822966496" style="display: none;"><div class="author-tooltip-0"><div class="author-tooltip-name">M Ida </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%2BIda%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=Ida%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 last"><a href="/search/author1%3AM%2BIda%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">Y Kurisu </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%2BKurisu%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=Kurisu%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%2BKurisu%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">M Yamashita </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%2BYamashita%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=Yamashita%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 last"><a href="/search/author1%3AM%2BYamashita%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>Abstract</h2><div id="sec-1" class="subsection"><p id="p-1"><strong>PURPOSE</strong> To determine the efficacy of high-resolution MR angiography for the prospective diagnosis of ruptured aneurysms in acute subarachnoid hemorrhage.</p></div><div id="sec-2" class="subsection"><p id="p-2"><strong>METHODS</strong> We used 3-D time-of-flight MR angiography with a large image matrix (193 x 512 frequency-encoding steps), magnetization transfer saturation, and a variable flip-angle excitation (tilted optimized nonsaturating excitation [TONE]) to study 28 patients with acute subarachnoid hemorrhage. The MR angiograms were compared with intraarterial digital subtraction angiographic (IA-DSA) images.</p></div><div id="sec-3" class="subsection"><p id="p-3"><strong>RESULTS</strong> Thirty-five (90%) of 39 aneurysms were detected prospectively with MR angiography. At least one aneurysm was identified with MR angiography in 25 (96%) of 26 patients with aneurysms proved by IA-DSA. Although four aneurysms were missed prospectively, three of these were detected retrospectively with MR angiography. Six aneurysms (18%) of those evident on MR angiograms were 3 mm or less in diameter. In one patient, additional targeted maximum intensity projections were greatly helpful for the ensuing IA-DSA by determining the optimial projection angle by which to depict a ruptured aneurysm that neither routine MR angiography nor routine IA-DSA detected.</p></div><div id="sec-4" class="subsection"><p id="p-4"><strong>CONCLUSION</strong> High-resolution MR angiography may be a useful diagnostic technique for detecting ruptured aneurysms, even in patients with acute subarachnoid hemorrhage. Initial MR angiography offers valuable and reliable information on ruptured aneurysms in acute subarachnoid hemorrhage, allowing the optimization of projection angles at conventional angiography.</p></div></div><ul class="copyright-statement"><li class="fn" id="copyright-statement-1">Copyright © American Society 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. 18</span>, <span  class="highwire-cite-metadata-issue highwire-cite-metadata">Issue 6 </span><div  class="highwire-cite-metadata-pubdate highwire-cite-metadata">1 Jun 1997 </div></div>
      
      
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      <div class="highwire-cite-title">MR angiography of ruptured aneurysms in acute subarachnoid hemorrhage.</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">M</span> <span class="nlm-surname">Ida</span></span>, <span class="highwire-citation-author" data-delta="1"><span class="nlm-given-names">Y</span> <span class="nlm-surname">Kurisu</span></span>, <span class="highwire-citation-author" data-delta="2"><span class="nlm-given-names">M</span> <span class="nlm-surname">Yamashita</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">Jun 1997, </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">18 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(6) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">1025-1032; </span></div>
  
  
  
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