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<meta name="HW.identifier" content="/ajnr/40/6/954.atom" />
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<meta name="DC.Title" content="Diagnostic Accuracy of High-Resolution Black-Blood MRI in the Evaluation of Intracranial Large-Vessel Arterial Occlusions" />
<meta name="DC.Identifier" content="10.3174/ajnr.A6065" />
<meta name="DC.Date" content="2019-06-01" />
<meta name="DC.Publisher" content="American Journal of Neuroradiology" />
<meta name="DC.Rights" content="© 2019 by American Journal of Neuroradiology. Indicates open access to non-subscribers at www.ajnr.org" />
<meta name="DC.AccessRights" content="open-access" />
<meta name="DC.Description" content="BACKGROUND AND PURPOSE: 3D high-resolution black-blood MRI or MR vessel wall imaging allows evaluation of the intracranial arterial wall and extraluminal pathology. We investigated the diagnostic accuracy and reliability of black-blood MRI for the intraluminal detection of large-vessel arterial occlusions.

MATERIALS AND METHODS: We retrospectively identified patients with intracranial arterial occlusions, confirmed by CTA or DSA, who also underwent 3D black-blood MRI with nonenhanced and contrast-enhanced T1 sampling perfection with application-optimized contrasts by using different flip angle evolution (T1 SPACE) sequences. Black-blood MRI findings were evaluated by 2 independent and blinded neuroradiologists. Large-vessel intracranial arterial segments were graded on a 3-point scale (grades 0–2) for intraluminal baseline T1 hyperintensity and contrast enhancement. Vessel segments were considered positive for arterial occlusion if focal weak (grade 1) or strong (grade 2) T1-hyperintense signal and/or enhancement replaced the normal intraluminal black-blood signal.

RESULTS: Thirty-one patients with 38 intracranial arterial occlusions were studied. The median time interval between black-blood MRI and CTA/DSA reference standard studies was 2 days (range, 0–20 days). Interobserver agreement was good for T1 hyperintensity (κ = 0.63) and excellent for contrast enhancement (κ = 0.89). High sensitivity (100%) and specificity (99.8%) for intracranial arterial occlusion diagnosis was observed with either intraluminal T1 hyperintensity or contrast-enhancement imaging criteria on black-blood MRI. Strong grade 2 intraluminal enhancement was maintained in &gt;80% of occlusions irrespective of location or chronicity. Relatively increased strong grade 2 intraluminal T1 hyperintensity was noted in chronic/incidental versus acute/subacute occlusions (45.5% versus 12.5%, P = .04).

CONCLUSIONS: Black-blood MRI with or without contrast has high diagnostic accuracy and reliability in evaluating intracranial large-vessel arterial occlusions with near-equivalency to DSA and CTA.

BBMRI
:   black-blood MRI
MR VWI
:   MR vessel wall imaging
SPACE
:   sampling perfection with application-optimized contrasts by using different flip angle evolution" />
<meta name="DC.Contributor" content="A.S. Al-Smadi" />
<meta name="DC.Contributor" content="R.N. Abdalla" />
<meta name="DC.Contributor" content="A.H. Elmokadem" />
<meta name="DC.Contributor" content="A. Shaibani" />
<meta name="DC.Contributor" content="M.C. Hurley" />
<meta name="DC.Contributor" content="M.B. Potts" />
<meta name="DC.Contributor" content="B.S. Jahromi" />
<meta name="DC.Contributor" content="T.J. Carroll" />
<meta name="DC.Contributor" content="S.A. Ansari" />
<meta name="article:published_time" content="2019-06-01" />
<meta name="article:section" content="Adult Brain" />
<meta name="citation_title" content="Diagnostic Accuracy of High-Resolution Black-Blood MRI in the Evaluation of Intracranial Large-Vessel Arterial Occlusions" />
<meta name="citation_abstract" lang="en" content="&lt;h3&gt;BACKGROUND AND PURPOSE:&lt;/h3&gt;
&lt;p&gt;3D high-resolution black-blood MRI or MR vessel wall imaging allows evaluation of the intracranial arterial wall and extraluminal pathology. We investigated the diagnostic accuracy and reliability of black-blood MRI for the intraluminal detection of large-vessel arterial occlusions.&lt;/p&gt;&lt;h3&gt;MATERIALS AND METHODS:&lt;/h3&gt;
&lt;p&gt;We retrospectively identified patients with intracranial arterial occlusions, confirmed by CTA or DSA, who also underwent 3D black-blood MRI with nonenhanced and contrast-enhanced T1 sampling perfection with application-optimized contrasts by using different flip angle evolution (T1 SPACE) sequences. Black-blood MRI findings were evaluated by 2 independent and blinded neuroradiologists. Large-vessel intracranial arterial segments were graded on a 3-point scale (grades 0–2) for intraluminal baseline T1 hyperintensity and contrast enhancement. Vessel segments were considered positive for arterial occlusion if focal weak (grade 1) or strong (grade 2) T1-hyperintense signal and/or enhancement replaced the normal intraluminal black-blood signal.&lt;/p&gt;&lt;h3&gt;RESULTS:&lt;/h3&gt;
&lt;p&gt;Thirty-one patients with 38 intracranial arterial occlusions were studied. The median time interval between black-blood MRI and CTA/DSA reference standard studies was 2 days (range, 0–20 days). Interobserver agreement was good for T1 hyperintensity (κ = 0.63) and excellent for contrast enhancement (κ = 0.89). High sensitivity (100%) and specificity (99.8%) for intracranial arterial occlusion diagnosis was observed with either intraluminal T1 hyperintensity or contrast-enhancement imaging criteria on black-blood MRI. Strong grade 2 intraluminal enhancement was maintained in &amp;gt;80% of occlusions irrespective of location or chronicity. Relatively increased strong grade 2 intraluminal T1 hyperintensity was noted in chronic/incidental versus acute/subacute occlusions (45.5% versus 12.5%, &lt;i&gt;P&lt;/i&gt; = .04).&lt;/p&gt;&lt;h3&gt;CONCLUSIONS:&lt;/h3&gt;
&lt;p&gt;Black-blood MRI with or without contrast has high diagnostic accuracy and reliability in evaluating intracranial large-vessel arterial occlusions with near-equivalency to DSA and CTA.&lt;/p&gt;" />
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<meta name="twitter:description" content="BACKGROUND AND PURPOSE: 3D high-resolution black-blood MRI or MR vessel wall imaging allows evaluation of the intracranial arterial wall and extraluminal pathology. We investigated the diagnostic accuracy and reliability of black-blood MRI for the intraluminal detection of large-vessel arterial occlusions.

MATERIALS AND METHODS: We retrospectively identified patients with intracranial arterial occlusions, confirmed by CTA or DSA, who also underwent 3D black-blood MRI with nonenhanced and contrast-enhanced T1 sampling perfection with application-optimized contrasts by using different flip angle evolution (T1 SPACE) sequences. Black-blood MRI findings were evaluated by 2 independent and blinded neuroradiologists. Large-vessel intracranial arterial segments were graded on a 3-point scale (grades 0–2) for intraluminal baseline T1 hyperintensity and contrast enhancement. Vessel segments were considered positive for arterial occlusion if focal weak (grade 1) or strong (grade 2) T1-hyperintense signal and/or enhancement replaced the normal intraluminal black-blood signal.

RESULTS: Thirty-one patients with 38 intracranial arterial occlusions were studied. The median time interval between black-blood MRI and CTA/DSA reference standard studies was 2 days (range, 0–20 days). Interobserver agreement was good for T1 hyperintensity (κ = 0.63) and excellent for contrast enhancement (κ = 0.89). High sensitivity (100%) and specificity (99.8%) for intracranial arterial occlusion diagnosis was observed with either intraluminal T1 hyperintensity or contrast-enhancement imaging criteria on black-blood MRI. Strong grade 2 intraluminal enhancement was maintained in &gt;80% of occlusions irrespective of location or chronicity. Relatively increased strong grade 2 intraluminal T1 hyperintensity was noted in chronic/incidental versus acute/subacute occlusions (45.5% versus 12.5%, P = .04).

CONCLUSIONS: Black-blood MRI with or without contrast has high diagnostic accuracy and reliability in evaluating intracranial large-vessel arterial occlusions with near-equivalency to DSA and CTA.

BBMRI
:   black-blood MRI
MR VWI
:   MR vessel wall imaging
SPACE
:   sampling perfection with application-optimized contrasts by using different flip angle evolution" />
<meta name="og-title" property="og:title" content="Diagnostic Accuracy of High-Resolution Black-Blood MRI in the Evaluation of Intracranial Large-Vessel Arterial Occlusions" />
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<meta name="og-description" property="og:description" content="BACKGROUND AND PURPOSE: 3D high-resolution black-blood MRI or MR vessel wall imaging allows evaluation of the intracranial arterial wall and extraluminal pathology. We investigated the diagnostic accuracy and reliability of black-blood MRI for the intraluminal detection of large-vessel arterial occlusions.

MATERIALS AND METHODS: We retrospectively identified patients with intracranial arterial occlusions, confirmed by CTA or DSA, who also underwent 3D black-blood MRI with nonenhanced and contrast-enhanced T1 sampling perfection with application-optimized contrasts by using different flip angle evolution (T1 SPACE) sequences. Black-blood MRI findings were evaluated by 2 independent and blinded neuroradiologists. Large-vessel intracranial arterial segments were graded on a 3-point scale (grades 0–2) for intraluminal baseline T1 hyperintensity and contrast enhancement. Vessel segments were considered positive for arterial occlusion if focal weak (grade 1) or strong (grade 2) T1-hyperintense signal and/or enhancement replaced the normal intraluminal black-blood signal.

RESULTS: Thirty-one patients with 38 intracranial arterial occlusions were studied. The median time interval between black-blood MRI and CTA/DSA reference standard studies was 2 days (range, 0–20 days). Interobserver agreement was good for T1 hyperintensity (κ = 0.63) and excellent for contrast enhancement (κ = 0.89). High sensitivity (100%) and specificity (99.8%) for intracranial arterial occlusion diagnosis was observed with either intraluminal T1 hyperintensity or contrast-enhancement imaging criteria on black-blood MRI. Strong grade 2 intraluminal enhancement was maintained in &gt;80% of occlusions irrespective of location or chronicity. Relatively increased strong grade 2 intraluminal T1 hyperintensity was noted in chronic/incidental versus acute/subacute occlusions (45.5% versus 12.5%, P = .04).

CONCLUSIONS: Black-blood MRI with or without contrast has high diagnostic accuracy and reliability in evaluating intracranial large-vessel arterial occlusions with near-equivalency to DSA and CTA.

BBMRI
:   black-blood MRI
MR VWI
:   MR vessel wall imaging
SPACE
:   sampling perfection with application-optimized contrasts by using different flip angle evolution" />
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    <div class="highwire-article-citation highwire-citation-type-highwire-article node67961--7" data-node-nid="67961" id="top-node-67961--82042894394" data-pisa="ajnr;40/6/954" data-pisa-master="ajnr;ajnr.A6065" data-apath="/ajnr/40/6/954.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">
  
  
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    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0">A.S. Al-Smadi</span>, <span class="highwire-citation-author" data-delta="1">R.N. Abdalla</span>, <span class="highwire-citation-author" data-delta="2">A.H. Elmokadem</span>, <span class="highwire-citation-author" data-delta="3">A. Shaibani</span>, <span class="highwire-citation-author" data-delta="4">M.C. Hurley</span>, <span class="highwire-citation-author" data-delta="5">M.B. Potts</span>, <span class="highwire-citation-author" data-delta="6">B.S. Jahromi</span>, <span class="highwire-citation-author" data-delta="7">T.J. Carroll</span> and <span class="highwire-citation-author" data-delta="8">S.A. Ansari</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 2019,  </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">40 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(6) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">954-959; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata">DOI: https://doi.org/10.3174/ajnr.A6065 </span></div>
  
  
  
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<div id="hw-article-author-popups-top-node-67961--82042894394" style="display: none;"><div class="author-tooltip-0"><div class="author-tooltip-name">A.S. Al-Smadi </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>From the Departments of Radiology (A.S.A.-S., R.N.A., A.H.E., A.S., M.C.H., M.B.P., B.S.J., S.A.A.)</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.S.%2BAl-Smadi%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=Al-Smadi%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.S.%2BAl-Smadi%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/0000-0002-2466-7083" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for A.S. Al-Smadi</a></li></ul></div><div class="author-tooltip-1"><div class="author-tooltip-name">R.N. Abdalla </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>From the Departments of Radiology (A.S.A.-S., R.N.A., A.H.E., A.S., M.C.H., M.B.P., B.S.J., S.A.A.)</div><div class='author-affiliation'><span class='nlm-sup'>e</span>Department of Radiology (R.N.A.), Ain Shams University, Cairo, Egypt</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=R.N.%2BAbdalla%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=Abdalla%20R&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%3AR.N.%2BAbdalla%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/0000-0003-2611-2097" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for R.N. Abdalla</a></li></ul></div><div class="author-tooltip-2"><div class="author-tooltip-name">A.H. Elmokadem </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>From the Departments of Radiology (A.S.A.-S., R.N.A., A.H.E., A.S., M.C.H., M.B.P., B.S.J., S.A.A.)</div><div class='author-affiliation'><span class='nlm-sup'>f</span>Department of Radiology (A.H.E.), Mansoura University, Mansoura, Egypt.</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.H.%2BElmokadem%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=Elmokadem%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.H.%2BElmokadem%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/0000-0001-5119-9548" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for A.H. Elmokadem</a></li></ul></div><div class="author-tooltip-3"><div class="author-tooltip-name">A. Shaibani </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>From the Departments of Radiology (A.S.A.-S., R.N.A., A.H.E., A.S., M.C.H., M.B.P., B.S.J., S.A.A.)</div><div class='author-affiliation'><span class='nlm-sup'>c</span>Neurological Surgery (A.S., M.C.H., M.B.P., B.S.J., S.A.A.), Northwestern University, Feinberg School of Medicine, Chicago, Illinois</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.%2BShaibani%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=Shaibani%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.%2BShaibani%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/0000-0002-9901-2903" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for A. Shaibani</a></li></ul></div><div class="author-tooltip-4"><div class="author-tooltip-name">M.C. Hurley </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>From the Departments of Radiology (A.S.A.-S., R.N.A., A.H.E., A.S., M.C.H., M.B.P., B.S.J., S.A.A.)</div><div class='author-affiliation'><span class='nlm-sup'>c</span>Neurological Surgery (A.S., M.C.H., M.B.P., B.S.J., S.A.A.), Northwestern University, Feinberg School of Medicine, Chicago, Illinois</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.C.%2BHurley%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=Hurley%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.C.%2BHurley%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/0000-0003-2873-4738" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for M.C. Hurley</a></li></ul></div><div class="author-tooltip-5"><div class="author-tooltip-name">M.B. Potts </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>From the Departments of Radiology (A.S.A.-S., R.N.A., A.H.E., A.S., M.C.H., M.B.P., B.S.J., S.A.A.)</div><div class='author-affiliation'><span class='nlm-sup'>c</span>Neurological Surgery (A.S., M.C.H., M.B.P., B.S.J., S.A.A.), Northwestern University, Feinberg School of Medicine, Chicago, Illinois</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.B.%2BPotts%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=Potts%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.B.%2BPotts%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/0000-0002-0534-5097" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for M.B. Potts</a></li></ul></div><div class="author-tooltip-6"><div class="author-tooltip-name">B.S. Jahromi </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>From the Departments of Radiology (A.S.A.-S., R.N.A., A.H.E., A.S., M.C.H., M.B.P., B.S.J., S.A.A.)</div><div class='author-affiliation'><span class='nlm-sup'>c</span>Neurological Surgery (A.S., M.C.H., M.B.P., B.S.J., S.A.A.), Northwestern University, Feinberg School of Medicine, Chicago, Illinois</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=B.S.%2BJahromi%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=Jahromi%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%3AB.S.%2BJahromi%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/0000-0001-5064-5278" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for B.S. Jahromi</a></li></ul></div><div class="author-tooltip-7"><div class="author-tooltip-name">T.J. Carroll </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>d</span>Department of Radiology (T.J.C.), University of Chicago, Chicago, Illinois</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.J.%2BCarroll%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=Carroll%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"><a href="/search/author1%3AT.J.%2BCarroll%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/0000-0003-2113-6284" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for T.J. Carroll</a></li></ul></div><div class="author-tooltip-8"><div class="author-tooltip-name">S.A. Ansari </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>From the Departments of Radiology (A.S.A.-S., R.N.A., A.H.E., A.S., M.C.H., M.B.P., B.S.J., S.A.A.)</div><div class='author-affiliation'><span class='nlm-sup'>b</span>Neurology (S.A.A.)</div><div class='author-affiliation'><span class='nlm-sup'>c</span>Neurological Surgery (A.S., M.C.H., M.B.P., B.S.J., S.A.A.), Northwestern University, Feinberg School of Medicine, Chicago, Illinois</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.A.%2BAnsari%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=Ansari%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"><a href="/search/author1%3AS.A.%2BAnsari%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/0000-0001-8176-4616" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for S.A. 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    	<div class="highwire-cite-metadata"><span  class="highwire-cite-metadata-volume highwire-cite-metadata">vol. 40 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">no. 6 </span><span  class="highwire-cite-metadata-page-string highwire-cite-metadata">954-959 </span></div>
  
  
  
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    <div class="highwire-markup"><div xmlns="http://www.w3.org/1999/xhtml" class="content-block-markup" xmlns:xhtml="http://www.w3.org/1999/xhtml"><div xmlns:xhtml="http://www.w3.org/1999/xhtml" class="contributors"><ol class="contributor-list" id="contrib-group-1"><li class="contributor" id="contrib-1"><span class="name">A.S. Al-Smadi</span><a id="xref-aff-1-1" class="xref-aff" href="#aff-1">a</a>, </li><li class="contributor" id="contrib-2"><span class="name">R.N. Abdalla</span><a id="xref-aff-1-2" class="xref-aff" href="#aff-1">a</a><span class="xref-sep">,</span><a id="xref-aff-5-1" class="xref-aff" href="#aff-5">e</a>, </li><li class="contributor" id="contrib-3"><span class="name">A.H. Elmokadem</span><a id="xref-aff-1-3" class="xref-aff" href="#aff-1">a</a><span class="xref-sep">,</span><a id="xref-aff-6-1" class="xref-aff" href="#aff-6">f</a>, </li><li class="contributor" id="contrib-4"><span class="name">A. Shaibani</span><a id="xref-aff-1-4" class="xref-aff" href="#aff-1">a</a><span class="xref-sep">,</span><a id="xref-aff-3-1" class="xref-aff" href="#aff-3">c</a>, </li><li class="contributor" id="contrib-5"><span class="name">M.C. Hurley</span><a id="xref-aff-1-5" class="xref-aff" href="#aff-1">a</a><span class="xref-sep">,</span><a id="xref-aff-3-2" class="xref-aff" href="#aff-3">c</a>, </li><li class="contributor" id="contrib-6"><span class="name">M.B. Potts</span><a id="xref-aff-1-6" class="xref-aff" href="#aff-1">a</a><span class="xref-sep">,</span><a id="xref-aff-3-3" class="xref-aff" href="#aff-3">c</a>, </li><li class="contributor" id="contrib-7"><span class="name">B.S. Jahromi</span><a id="xref-aff-1-7" class="xref-aff" href="#aff-1">a</a><span class="xref-sep">,</span><a id="xref-aff-3-4" class="xref-aff" href="#aff-3">c</a>, </li><li class="contributor" id="contrib-8"><span class="name">T.J. Carroll</span><a id="xref-aff-4-1" class="xref-aff" href="#aff-4">d</a> and </li><li class="last" id="contrib-9"><span class="name">S.A. Ansari</span><a id="xref-aff-1-8" class="xref-aff" href="#aff-1">a</a><span class="xref-sep">,</span><a id="xref-aff-2-1" class="xref-aff" href="#aff-2">b</a><span class="xref-sep">,</span><a id="xref-aff-3-5" class="xref-aff" href="#aff-3">c</a></li></ol><ol class="affiliation-list"><li class="aff"><a id="aff-1" name="aff-1"></a><address><sup>a</sup>From the Departments of Radiology (A.S.A.-S., R.N.A., A.H.E., A.S., M.C.H., M.B.P., B.S.J., S.A.A.)</address></li><li class="aff"><a id="aff-2" name="aff-2"></a><address><sup>b</sup>Neurology (S.A.A.)</address></li><li class="aff"><a id="aff-3" name="aff-3"></a><address><sup>c</sup>Neurological Surgery (A.S., M.C.H., M.B.P., B.S.J., S.A.A.), Northwestern University, Feinberg School of Medicine, Chicago, Illinois</address></li><li class="aff"><a id="aff-4" name="aff-4"></a><address><sup>d</sup>Department of Radiology (T.J.C.), University of Chicago, Chicago, Illinois</address></li><li class="aff"><a id="aff-5" name="aff-5"></a><address><sup>e</sup>Department of Radiology (R.N.A.), Ain Shams University, Cairo, Egypt</address></li><li class="aff"><a id="aff-6" name="aff-6"></a><address><sup>f</sup>Department of Radiology (A.H.E.), Mansoura University, Mansoura, Egypt.</address></li></ol><ol class="corresp-list"><li class="corresp" id="corresp-1">Please address correspondence to Sameer A. Ansari, MD, PhD, <span class="addr-line">Departments of Radiology, Neurology, and Neurological Surgery, Northwestern University, Feinberg School of Medicine, 676 N St Clair St, Suite 800, Chicago, IL 60611-2927</span>; e-mail: <span class="em-link"><span class="em-addr">s-ansari{at}northwestern.edu</span></span></li></ol></div></div><a href="http://ajnr-stage2.stage.highwire.org/content/40/6/954.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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</span></h3><div class="funding-award-ids text-secondary"><span class="nlm-award-id" data-hwp-id="award-id-1">1R21HL130969</span></div></div></li><li class="even"><div class="funding-award-group"><h3 class="funding-source no-margin-bottom"><span class="nlm-funding-source" data-hwp-id="funding-source-2">American Heart Association

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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.S.</span> <span class="nlm-surname">Al-Smadi</span></span>, <span class="highwire-citation-author" data-delta="1"><span class="nlm-given-names">R.N.</span> <span class="nlm-surname">Abdalla</span></span>, <span class="highwire-citation-author" data-delta="2"><span class="nlm-given-names">A.H.</span> <span class="nlm-surname">Elmokadem</span></span>, <span class="highwire-citation-author" data-delta="3"><span class="nlm-given-names">A.</span> <span class="nlm-surname">Shaibani</span></span>, <span class="highwire-citation-author" data-delta="4"><span class="nlm-given-names">M.C.</span> <span class="nlm-surname">Hurley</span></span>, <span class="highwire-citation-author" data-delta="5"><span class="nlm-given-names">M.B.</span> <span class="nlm-surname">Potts</span></span>, <span class="highwire-citation-author" data-delta="6"><span class="nlm-given-names">B.S.</span> <span class="nlm-surname">Jahromi</span></span>, <span class="highwire-citation-author" data-delta="7"><span class="nlm-given-names">T.J.</span> <span class="nlm-surname">Carroll</span></span>, <span class="highwire-citation-author" data-delta="8"><span class="nlm-given-names">S.A.</span> <span class="nlm-surname">Ansari</span></span></span></div>
  
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