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<meta name="DC.Title" content="Evaluation of Traumatic Subarachnoid Hemorrhage Using Susceptibility-Weighted Imaging" />
<meta name="DC.Identifier" content="10.3174/ajnr.A2022" />
<meta name="DC.Date" content="2010-08-01" />
<meta name="DC.Publisher" content="American Journal of Neuroradiology" />
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Indicates open access to non-subscribers at www.ajnr.org" />
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<meta name="DC.Description" content="BACKGROUND AND PURPOSE: SWI is an MR imaging technique that is very sensitive to hemorrhage. Our goal was to compare SWI and CT to determine if SWI can show traumatic SAH in different parts of the subarachnoid space.

MATERIALS AND METHODS: Twenty acute TBI patients identified by CT with SAH underwent MR imaging scans. Two neuroradiologists analyzed the CT and SWI data to decide whether there were SAHs in 8 anatomical parts of the subarachnoid space.

RESULTS: Fifty-five areas with SAH were identified by both CT and SWI. Ten areas were identified by CT only and 13 by SWI only. SAH was recognized on SWI by its very dark signal intensity surrounded by CSF signal intensity in the sulci or cisterns. Compared with the smooth-looking veins, SAH tended to have a rough boundary and inhomogeneous signal intensity. In many instances, blood in the sulcus left an area of signal intensity loss that had a “triangle” shape. SWI showed 5 more cases of intraventricular hemorrhage than did CT.

CONCLUSIONS: SAH can be recognized by SWI through its signal intensity and unique morphology. SWI can provide complementary information to CT in terms of small amounts of SAH and hemorrhage inside the ventricles.

BW
:   bandwidth
FA
:   flip angle
FLAIR
:   fluid-attenuated inversion recovery
FPC
:   frontal-parietal convexity
GRAPPA
:   generalized autocalibrating partially parallel acquisition
HU
:   Hounsfield unit
IHF
:   interhemispheric fissure
IVH
:   intraventricular hemorrhage
kvp
:   kilovoltage peak
MIP
:   minimum intensity projection
PFC
:   posterior fossa cisterns
PMC
:   perimesencephalic cistern
SAH
:   subarachnoid hemorrhage
SVF
:   Sylvian fissure
SWI
:   susceptibility-weighted imaging
T1WI
:   T1-weighted imaging
T2WI
:   T2-weighted imaging
TBI
:   traumatic brain injury
TNC
:   tentorial cistern
TOC
:   temporal-occipital convexity
WM
:   white matter" />
<meta name="DC.Contributor" content="Z. Wu" />
<meta name="DC.Contributor" content="S. Li" />
<meta name="DC.Contributor" content="J. Lei" />
<meta name="DC.Contributor" content="D. An" />
<meta name="DC.Contributor" content="E.M. Haacke" />
<meta name="article:published_time" content="2010-08-01" />
<meta name="article:section" content="Brain" />
<meta name="citation_title" content="Evaluation of Traumatic Subarachnoid Hemorrhage Using Susceptibility-Weighted Imaging" />
<meta name="citation_abstract" lang="en" content="&lt;h3&gt;BACKGROUND AND PURPOSE:&lt;/h3&gt;
&lt;p&gt;SWI is an MR imaging technique that is very sensitive to hemorrhage. Our goal was to compare SWI and CT to determine if SWI can show traumatic SAH in different parts of the subarachnoid space.&lt;/p&gt;&lt;h3&gt;MATERIALS AND METHODS:&lt;/h3&gt;
&lt;p&gt;Twenty acute TBI patients identified by CT with SAH underwent MR imaging scans. Two neuroradiologists analyzed the CT and SWI data to decide whether there were SAHs in 8 anatomical parts of the subarachnoid space.&lt;/p&gt;&lt;h3&gt;RESULTS:&lt;/h3&gt;
&lt;p&gt;Fifty-five areas with SAH were identified by both CT and SWI. Ten areas were identified by CT only and 13 by SWI only. SAH was recognized on SWI by its very dark signal intensity surrounded by CSF signal intensity in the sulci or cisterns. Compared with the smooth-looking veins, SAH tended to have a rough boundary and inhomogeneous signal intensity. In many instances, blood in the sulcus left an area of signal intensity loss that had a “triangle” shape. SWI showed 5 more cases of intraventricular hemorrhage than did CT.&lt;/p&gt;&lt;h3&gt;CONCLUSIONS:&lt;/h3&gt;
&lt;p&gt;SAH can be recognized by SWI through its signal intensity and unique morphology. SWI can provide complementary information to CT in terms of small amounts of SAH and hemorrhage inside the ventricles.&lt;/p&gt;" />
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<meta name="twitter:title" content="Evaluation of Traumatic Subarachnoid Hemorrhage Using Susceptibility-Weighted Imaging" />
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<meta name="twitter:description" content="BACKGROUND AND PURPOSE: SWI is an MR imaging technique that is very sensitive to hemorrhage. Our goal was to compare SWI and CT to determine if SWI can show traumatic SAH in different parts of the subarachnoid space.

MATERIALS AND METHODS: Twenty acute TBI patients identified by CT with SAH underwent MR imaging scans. Two neuroradiologists analyzed the CT and SWI data to decide whether there were SAHs in 8 anatomical parts of the subarachnoid space.

RESULTS: Fifty-five areas with SAH were identified by both CT and SWI. Ten areas were identified by CT only and 13 by SWI only. SAH was recognized on SWI by its very dark signal intensity surrounded by CSF signal intensity in the sulci or cisterns. Compared with the smooth-looking veins, SAH tended to have a rough boundary and inhomogeneous signal intensity. In many instances, blood in the sulcus left an area of signal intensity loss that had a “triangle” shape. SWI showed 5 more cases of intraventricular hemorrhage than did CT.

CONCLUSIONS: SAH can be recognized by SWI through its signal intensity and unique morphology. SWI can provide complementary information to CT in terms of small amounts of SAH and hemorrhage inside the ventricles.

BW
:   bandwidth
FA
:   flip angle
FLAIR
:   fluid-attenuated inversion recovery
FPC
:   frontal-parietal convexity
GRAPPA
:   generalized autocalibrating partially parallel acquisition
HU
:   Hounsfield unit
IHF
:   interhemispheric fissure
IVH
:   intraventricular hemorrhage
kvp
:   kilovoltage peak
MIP
:   minimum intensity projection
PFC
:   posterior fossa cisterns
PMC
:   perimesencephalic cistern
SAH
:   subarachnoid hemorrhage
SVF
:   Sylvian fissure
SWI
:   susceptibility-weighted imaging
T1WI
:   T1-weighted imaging
T2WI
:   T2-weighted imaging
TBI
:   traumatic brain injury
TNC
:   tentorial cistern
TOC
:   temporal-occipital convexity
WM
:   white matter" />
<meta name="og-title" property="og:title" content="Evaluation of Traumatic Subarachnoid Hemorrhage Using Susceptibility-Weighted Imaging" />
<meta name="og-url" property="og:url" content="http://ajnr-stage2.stage.highwire.org/content/31/7/1302" />
<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: SWI is an MR imaging technique that is very sensitive to hemorrhage. Our goal was to compare SWI and CT to determine if SWI can show traumatic SAH in different parts of the subarachnoid space.

MATERIALS AND METHODS: Twenty acute TBI patients identified by CT with SAH underwent MR imaging scans. Two neuroradiologists analyzed the CT and SWI data to decide whether there were SAHs in 8 anatomical parts of the subarachnoid space.

RESULTS: Fifty-five areas with SAH were identified by both CT and SWI. Ten areas were identified by CT only and 13 by SWI only. SAH was recognized on SWI by its very dark signal intensity surrounded by CSF signal intensity in the sulci or cisterns. Compared with the smooth-looking veins, SAH tended to have a rough boundary and inhomogeneous signal intensity. In many instances, blood in the sulcus left an area of signal intensity loss that had a “triangle” shape. SWI showed 5 more cases of intraventricular hemorrhage than did CT.

CONCLUSIONS: SAH can be recognized by SWI through its signal intensity and unique morphology. SWI can provide complementary information to CT in terms of small amounts of SAH and hemorrhage inside the ventricles.

BW
:   bandwidth
FA
:   flip angle
FLAIR
:   fluid-attenuated inversion recovery
FPC
:   frontal-parietal convexity
GRAPPA
:   generalized autocalibrating partially parallel acquisition
HU
:   Hounsfield unit
IHF
:   interhemispheric fissure
IVH
:   intraventricular hemorrhage
kvp
:   kilovoltage peak
MIP
:   minimum intensity projection
PFC
:   posterior fossa cisterns
PMC
:   perimesencephalic cistern
SAH
:   subarachnoid hemorrhage
SVF
:   Sylvian fissure
SWI
:   susceptibility-weighted imaging
T1WI
:   T1-weighted imaging
T2WI
:   T2-weighted imaging
TBI
:   traumatic brain injury
TNC
:   tentorial cistern
TOC
:   temporal-occipital convexity
WM
:   white matter" />
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      <h1 class="highwire-cite-title" id="page-title">Evaluation of Traumatic Subarachnoid Hemorrhage Using Susceptibility-Weighted Imaging</h1>  
    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0">Z. Wu</span>, <span class="highwire-citation-author" data-delta="1">S. Li</span>, <span class="highwire-citation-author" data-delta="2">J. Lei</span>, <span class="highwire-citation-author" data-delta="3">D. An</span> and <span class="highwire-citation-author" data-delta="4">E.M. Haacke</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">August 2010,  </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">31 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(7) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">1302-1310; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata">DOI: https://doi.org/10.3174/ajnr.A2022 </span></div>
  
  
  
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<div id="hw-article-author-popups-top-node-9763--61227017917" style="display: none;"><div class="author-tooltip-0"><div class="author-tooltip-name">Z. Wu </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=Z.%2BWu%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=Wu%20Z&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%3AZ.%2BWu%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">S. Li </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.%2BLi%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=Li%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.%2BLi%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">J. Lei </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.%2BLei%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=Lei%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 last"><a href="/search/author1%3AJ.%2BLei%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">D. An </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=D.%2BAn%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=An%20D&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%3AD.%2BAn%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">E.M. Haacke </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=E.M.%2BHaacke%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=Haacke%20E&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%3AE.M.%2BHaacke%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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<p id="p-2"><strong>BACKGROUND AND PURPOSE:</strong> SWI is an MR imaging technique that is very sensitive to hemorrhage. Our goal was to compare SWI and CT to determine if SWI can show traumatic SAH in different parts of the subarachnoid space.</p>
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<p id="p-3"><strong>MATERIALS AND METHODS:</strong> Twenty acute TBI patients identified by CT with SAH underwent MR imaging scans. Two neuroradiologists analyzed the CT and SWI data to decide whether there were SAHs in 8 anatomical parts of the subarachnoid space.</p>
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<p id="p-4"><strong>RESULTS:</strong> Fifty-five areas with SAH were identified by both CT and SWI. Ten areas were identified by CT only and 13 by SWI only. SAH was recognized on SWI by its very dark signal intensity surrounded by CSF signal intensity in the sulci or cisterns. Compared with the smooth-looking veins, SAH tended to have a rough boundary and inhomogeneous signal intensity. In many instances, blood in the sulcus left an area of signal intensity loss that had a “triangle” shape. SWI showed 5 more cases of intraventricular hemorrhage than did CT.</p>
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<p id="p-5"><strong>CONCLUSIONS:</strong> SAH can be recognized by SWI through its signal intensity and unique morphology. SWI can provide complementary information to CT in terms of small amounts of SAH and hemorrhage inside the ventricles.</p>
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</div><div class="section glossary" id="glossary-1"><h2>Abbreviations</h2><dl id="def-list-1"><dt id="def-item-1">BW<span class="def-item-dt-sep"></span></dt><dd>bandwidth<span class="def-item-dd-sep"></span></dd><dt id="def-item-2">FA<span class="def-item-dt-sep"></span></dt><dd>flip angle<span class="def-item-dd-sep"></span></dd><dt id="def-item-3">FLAIR<span class="def-item-dt-sep"></span></dt><dd>fluid-attenuated inversion recovery<span class="def-item-dd-sep"></span></dd><dt id="def-item-4">FPC<span class="def-item-dt-sep"></span></dt><dd>frontal-parietal convexity<span class="def-item-dd-sep"></span></dd><dt id="def-item-5">GRAPPA<span class="def-item-dt-sep"></span></dt><dd>generalized autocalibrating partially parallel acquisition<span class="def-item-dd-sep"></span></dd><dt id="def-item-6">HU<span class="def-item-dt-sep"></span></dt><dd>Hounsfield unit<span class="def-item-dd-sep"></span></dd><dt id="def-item-7">IHF<span class="def-item-dt-sep"></span></dt><dd>interhemispheric fissure<span class="def-item-dd-sep"></span></dd><dt id="def-item-8">IVH<span class="def-item-dt-sep"></span></dt><dd>intraventricular hemorrhage<span class="def-item-dd-sep"></span></dd><dt id="def-item-9">kvp<span class="def-item-dt-sep"></span></dt><dd>kilovoltage peak<span class="def-item-dd-sep"></span></dd><dt id="def-item-10">MIP<span class="def-item-dt-sep"></span></dt><dd>minimum intensity projection<span class="def-item-dd-sep"></span></dd><dt id="def-item-11">PFC<span class="def-item-dt-sep"></span></dt><dd>posterior fossa cisterns<span class="def-item-dd-sep"></span></dd><dt id="def-item-12">PMC<span class="def-item-dt-sep"></span></dt><dd>perimesencephalic cistern<span class="def-item-dd-sep"></span></dd><dt id="def-item-13">SAH<span class="def-item-dt-sep"></span></dt><dd>subarachnoid hemorrhage<span class="def-item-dd-sep"></span></dd><dt id="def-item-14">SVF<span class="def-item-dt-sep"></span></dt><dd>Sylvian fissure<span class="def-item-dd-sep"></span></dd><dt id="def-item-15">SWI<span class="def-item-dt-sep"></span></dt><dd>susceptibility-weighted imaging<span class="def-item-dd-sep"></span></dd><dt id="def-item-16">T1WI<span class="def-item-dt-sep"></span></dt><dd>T1-weighted imaging<span class="def-item-dd-sep"></span></dd><dt id="def-item-17">T2WI<span class="def-item-dt-sep"></span></dt><dd>T2-weighted imaging<span class="def-item-dd-sep"></span></dd><dt id="def-item-18">TBI<span class="def-item-dt-sep"></span></dt><dd>traumatic brain injury<span class="def-item-dd-sep"></span></dd><dt id="def-item-19">TNC<span class="def-item-dt-sep"></span></dt><dd>tentorial cistern<span class="def-item-dd-sep"></span></dd><dt id="def-item-20">TOC<span class="def-item-dt-sep"></span></dt><dd>temporal-occipital convexity<span class="def-item-dd-sep"></span></dd><dt id="def-item-21">WM<span class="def-item-dt-sep"></span></dt><dd>white matter</dd></dl></div><ul class="copyright-statement"><li class="fn" id="copyright-statement-1">Copyright © American Society of Neuroradiology</li></ul><div class="license" id="license-1"><p id="p-1">Indicates open access to non-subscribers at <a href="http://www.ajnr.org">www.ajnr.org</a></p></div><span class="highwire-journal-article-marker-end"></span></div><span class="related-urls"></span></div><a href="http://ajnr-stage2.stage.highwire.org/content/31/7/1302.full" class="hw-link hw-link-article-full-text" data-icon-position="" data-hide-link-title="0">View Full Text</a></div>  </div>

  
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      <div class="highwire-cite-title">Evaluation of Traumatic Subarachnoid Hemorrhage Using Susceptibility-Weighted Imaging</div>  
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      <div class="highwire-cite-title">Evaluation of Traumatic Subarachnoid Hemorrhage Using Susceptibility-Weighted Imaging</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">Z.</span> <span class="nlm-surname">Wu</span></span>, <span class="highwire-citation-author" data-delta="1"><span class="nlm-given-names">S.</span> <span class="nlm-surname">Li</span></span>, <span class="highwire-citation-author" data-delta="2"><span class="nlm-given-names">J.</span> <span class="nlm-surname">Lei</span></span>, <span class="highwire-citation-author" data-delta="3"><span class="nlm-given-names">D.</span> <span class="nlm-surname">An</span></span>, <span class="highwire-citation-author" data-delta="4"><span class="nlm-given-names">E.M.</span> <span class="nlm-surname">Haacke</span></span></span></div>
  
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