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<meta name="DC.Title" content="Correlation of Collateral Scores Derived from Whole-Brain Time-Resolved Flat Panel Detector Imaging in Acute Ischemic Stroke" />
<meta name="DC.Identifier" content="10.3174/ajnr.A7657" />
<meta name="DC.Date" content="2022-11-01" />
<meta name="DC.Publisher" content="American Journal of Neuroradiology" />
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<meta name="DC.Description" content="BACKGROUND AND PURPOSE: Flat panel detector CT imaging allows simultaneous acquisition of multiphase flat panel CTA and flat panel CTP imaging directly in the angio suite. We compared collateral assessment derived from multiphase flat panel CTA and flat panel CTP with collateral assessment derived from DSA as the gold-standard.

MATERIALS AND METHODS: We performed a retrospective analysis of patients with occlusion of the first or second segment of the MCA who underwent pre-interventional flat panel detector CT. The hypoperfusion intensity ratio as a correlate of collateral status was calculated from flat panel CTP (time-to-maximum &gt; 10 seconds volume/time-to-maximum &gt; 6 seconds volume). Intraclass correlation coefficients were calculated for interrater reliability for the Calgary/Menon score for multiphase flat panel CTA and for the American Society of Interventional and Therapeutic Neuroradiology/Society of Interventional Radiology (ASITN/SIR) score for DSA collateral scores. Correlations of the hypoperfusion intensity ratio, multiphase flat panel CTA score, and the ASITN/SIR score were calculated using the Spearman correlation.

RESULTS: From November 2019 to February 2020, thirty patients were included. Moderate interrater reliability was achieved for the ASITN/SIR DSA score (0.68; 95% CI, 0.50–0.82) as well as for the Calgary/Menon multiphase flat panel CTA score (0.53; 95% CI, 0.29–0.72). We found a strong correlation between the ASITN/SIR DSA and Calgary/Menon multiphase flat panel CTA score (ρ = 0.54, P = .002) and between the hypoperfusion intensity ratio and the Calgary/Menon multiphase flat panel CTA score (ρ = −0.57, P &lt; .001). The correlation was moderate between the hypoperfusion intensity ratio and the ASITN/SIR DSA score (ρ = –0.49, P = .006). The infarct core volume correlated strongly with the Calgary/Menon multiphase flat panel CTA score (ρ = –0.66, P  &lt; .001) and the hypoperfusion intensity ratio (ρ = 0.76, P  &lt; .001) and correlated moderately with the ASITN/SIR DSA score (ρ = –0.46, P = .01).

CONCLUSIONS: The Calgary/Menon multiphase flat panel CTA score and the hypoperfusion intensity ratio correlated with each other and with the ASITN/SIR DSA score as the gold-standard. In our cohort, the collateral scoring derived from flat panel detector CT was clinically reliable.

ASITN/SIR
:   American Society of Interventional and Therapeutic Neuroradiology/Society of Interventional Radiology
FDCT
:   flat panel detector CT
FDCTP
:   flat panel detector CTP
HIR
:   hypoperfusion intensity ratio
ICC
:   intraclass correlation coefficient
mCTA
:   multiphase CTA
mFDCTA
:   multiphase flat panel detector CTA
rCBF
:   relative CBF
Tmax
:   time to maximum" />
<meta name="DC.Contributor" content="C.C. Kurmann" />
<meta name="DC.Contributor" content="J. Kaesmacher" />
<meta name="DC.Contributor" content="S. Pilgram-Pastor" />
<meta name="DC.Contributor" content="E.I. Piechowiak" />
<meta name="DC.Contributor" content="A. Scutelnic" />
<meta name="DC.Contributor" content="M.R. Heldner" />
<meta name="DC.Contributor" content="T. Dobrocky" />
<meta name="DC.Contributor" content="J. Gralla" />
<meta name="DC.Contributor" content="P. Mordasini" />
<meta name="article:published_time" content="2022-11-01" />
<meta name="article:section" content="Interventional" />
<meta name="citation_title" content="Correlation of Collateral Scores Derived from Whole-Brain Time-Resolved Flat Panel Detector Imaging in Acute Ischemic Stroke" />
<meta name="citation_abstract" lang="en" content="&lt;h3&gt;BACKGROUND AND PURPOSE:&lt;/h3&gt;
&lt;p&gt;Flat panel detector CT imaging allows simultaneous acquisition of multiphase flat panel CTA and flat panel CTP imaging directly in the angio suite. We compared collateral assessment derived from multiphase flat panel CTA and flat panel CTP with collateral assessment derived from DSA as the gold-standard.&lt;/p&gt;&lt;h3&gt;MATERIALS AND METHODS:&lt;/h3&gt;
&lt;p&gt;We performed a retrospective analysis of patients with occlusion of the first or second segment of the MCA who underwent pre-interventional flat panel detector CT. The hypoperfusion intensity ratio as a correlate of collateral status was calculated from flat panel CTP (time-to-maximum &amp;gt; 10 seconds volume/time-to-maximum &amp;gt; 6 seconds volume). Intraclass correlation coefficients were calculated for interrater reliability for the Calgary/Menon score for multiphase flat panel CTA and for the American Society of Interventional and Therapeutic Neuroradiology/Society of Interventional Radiology (ASITN/SIR) score for DSA collateral scores. Correlations of the hypoperfusion intensity ratio, multiphase flat panel CTA score, and the ASITN/SIR score were calculated using the Spearman correlation.&lt;/p&gt;&lt;h3&gt;RESULTS:&lt;/h3&gt;
&lt;p&gt;From November 2019 to February 2020, thirty patients were included. Moderate interrater reliability was achieved for the ASITN/SIR DSA score (0.68; 95% CI, 0.50–0.82) as well as for the Calgary/Menon multiphase flat panel CTA score (0.53; 95% CI, 0.29–0.72). We found a strong correlation between the ASITN/SIR DSA and Calgary/Menon multiphase flat panel CTA score (ρ = 0.54, &lt;i&gt;P&lt;/i&gt; = .002) and between the hypoperfusion intensity ratio and the Calgary/Menon multiphase flat panel CTA score (ρ = −0.57, &lt;i&gt;P&lt;/i&gt; &amp;lt; .001). The correlation was moderate between the hypoperfusion intensity ratio and the ASITN/SIR DSA score (ρ = –0.49, &lt;i&gt;P&lt;/i&gt; = .006). The infarct core volume correlated strongly with the Calgary/Menon multiphase flat panel CTA score (ρ = –0.66, &lt;i&gt;P &lt;/i&gt;&amp;lt; .001) and the hypoperfusion intensity ratio (ρ = 0.76, &lt;i&gt;P &lt;/i&gt;&amp;lt; .001) and correlated moderately with the ASITN/SIR DSA score (ρ = –0.46, &lt;i&gt;P&lt;/i&gt; = .01).&lt;/p&gt;&lt;h3&gt;CONCLUSIONS:&lt;/h3&gt;
&lt;p&gt;The Calgary/Menon multiphase flat panel CTA score and the hypoperfusion intensity ratio correlated with each other and with the ASITN/SIR DSA score as the gold-standard. In our cohort, the collateral scoring derived from flat panel detector CT was clinically reliable.&lt;/p&gt;" />
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<meta name="twitter:title" content="Correlation of Collateral Scores Derived from Whole-Brain Time-Resolved Flat Panel Detector Imaging in Acute Ischemic Stroke" />
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<meta name="twitter:description" content="BACKGROUND AND PURPOSE: Flat panel detector CT imaging allows simultaneous acquisition of multiphase flat panel CTA and flat panel CTP imaging directly in the angio suite. We compared collateral assessment derived from multiphase flat panel CTA and flat panel CTP with collateral assessment derived from DSA as the gold-standard.

MATERIALS AND METHODS: We performed a retrospective analysis of patients with occlusion of the first or second segment of the MCA who underwent pre-interventional flat panel detector CT. The hypoperfusion intensity ratio as a correlate of collateral status was calculated from flat panel CTP (time-to-maximum &gt; 10 seconds volume/time-to-maximum &gt; 6 seconds volume). Intraclass correlation coefficients were calculated for interrater reliability for the Calgary/Menon score for multiphase flat panel CTA and for the American Society of Interventional and Therapeutic Neuroradiology/Society of Interventional Radiology (ASITN/SIR) score for DSA collateral scores. Correlations of the hypoperfusion intensity ratio, multiphase flat panel CTA score, and the ASITN/SIR score were calculated using the Spearman correlation.

RESULTS: From November 2019 to February 2020, thirty patients were included. Moderate interrater reliability was achieved for the ASITN/SIR DSA score (0.68; 95% CI, 0.50–0.82) as well as for the Calgary/Menon multiphase flat panel CTA score (0.53; 95% CI, 0.29–0.72). We found a strong correlation between the ASITN/SIR DSA and Calgary/Menon multiphase flat panel CTA score (ρ = 0.54, P = .002) and between the hypoperfusion intensity ratio and the Calgary/Menon multiphase flat panel CTA score (ρ = −0.57, P &lt; .001). The correlation was moderate between the hypoperfusion intensity ratio and the ASITN/SIR DSA score (ρ = –0.49, P = .006). The infarct core volume correlated strongly with the Calgary/Menon multiphase flat panel CTA score (ρ = –0.66, P  &lt; .001) and the hypoperfusion intensity ratio (ρ = 0.76, P  &lt; .001) and correlated moderately with the ASITN/SIR DSA score (ρ = –0.46, P = .01).

CONCLUSIONS: The Calgary/Menon multiphase flat panel CTA score and the hypoperfusion intensity ratio correlated with each other and with the ASITN/SIR DSA score as the gold-standard. In our cohort, the collateral scoring derived from flat panel detector CT was clinically reliable.

ASITN/SIR
:   American Society of Interventional and Therapeutic Neuroradiology/Society of Interventional Radiology
FDCT
:   flat panel detector CT
FDCTP
:   flat panel detector CTP
HIR
:   hypoperfusion intensity ratio
ICC
:   intraclass correlation coefficient
mCTA
:   multiphase CTA
mFDCTA
:   multiphase flat panel detector CTA
rCBF
:   relative CBF
Tmax
:   time to maximum" />
<meta name="og-title" property="og:title" content="Correlation of Collateral Scores Derived from Whole-Brain Time-Resolved Flat Panel Detector Imaging in Acute Ischemic Stroke" />
<meta name="og-url" property="og:url" content="http://ajnr-stage2.stage.highwire.org/content/43/11/1627" />
<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: Flat panel detector CT imaging allows simultaneous acquisition of multiphase flat panel CTA and flat panel CTP imaging directly in the angio suite. We compared collateral assessment derived from multiphase flat panel CTA and flat panel CTP with collateral assessment derived from DSA as the gold-standard.

MATERIALS AND METHODS: We performed a retrospective analysis of patients with occlusion of the first or second segment of the MCA who underwent pre-interventional flat panel detector CT. The hypoperfusion intensity ratio as a correlate of collateral status was calculated from flat panel CTP (time-to-maximum &gt; 10 seconds volume/time-to-maximum &gt; 6 seconds volume). Intraclass correlation coefficients were calculated for interrater reliability for the Calgary/Menon score for multiphase flat panel CTA and for the American Society of Interventional and Therapeutic Neuroradiology/Society of Interventional Radiology (ASITN/SIR) score for DSA collateral scores. Correlations of the hypoperfusion intensity ratio, multiphase flat panel CTA score, and the ASITN/SIR score were calculated using the Spearman correlation.

RESULTS: From November 2019 to February 2020, thirty patients were included. Moderate interrater reliability was achieved for the ASITN/SIR DSA score (0.68; 95% CI, 0.50–0.82) as well as for the Calgary/Menon multiphase flat panel CTA score (0.53; 95% CI, 0.29–0.72). We found a strong correlation between the ASITN/SIR DSA and Calgary/Menon multiphase flat panel CTA score (ρ = 0.54, P = .002) and between the hypoperfusion intensity ratio and the Calgary/Menon multiphase flat panel CTA score (ρ = −0.57, P &lt; .001). The correlation was moderate between the hypoperfusion intensity ratio and the ASITN/SIR DSA score (ρ = –0.49, P = .006). The infarct core volume correlated strongly with the Calgary/Menon multiphase flat panel CTA score (ρ = –0.66, P  &lt; .001) and the hypoperfusion intensity ratio (ρ = 0.76, P  &lt; .001) and correlated moderately with the ASITN/SIR DSA score (ρ = –0.46, P = .01).

CONCLUSIONS: The Calgary/Menon multiphase flat panel CTA score and the hypoperfusion intensity ratio correlated with each other and with the ASITN/SIR DSA score as the gold-standard. In our cohort, the collateral scoring derived from flat panel detector CT was clinically reliable.

ASITN/SIR
:   American Society of Interventional and Therapeutic Neuroradiology/Society of Interventional Radiology
FDCT
:   flat panel detector CT
FDCTP
:   flat panel detector CTP
HIR
:   hypoperfusion intensity ratio
ICC
:   intraclass correlation coefficient
mCTA
:   multiphase CTA
mFDCTA
:   multiphase flat panel detector CTA
rCBF
:   relative CBF
Tmax
:   time to maximum" />
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    <div class="highwire-article-citation highwire-citation-type-highwire-article node99649--7" data-node-nid="99649" id="top-node-99649--81757712373" data-pisa="ajnr;43/11/1627" data-pisa-master="ajnr;ajnr.A7657" data-apath="/ajnr/43/11/1627.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">Research Article</span><span class="separator-pipe"></span><span  class="highwire-cite-metadata-art-cat highwire-cite-metadata"><span class="wrapper">Interventional</span></span></div>
  
      <div class="highwire-cite-access"><span class="highwire-citation-access"><i class="highwire-access-icon highwire-access-icon-open-access open-access hw-icon-open-access" title="Open Access" aria-hidden="true"></i><span  class="element-invisible highwire-access-icon highwire-access-icon-open-access" style="">Open Access</span></span></div>
  
      <h1 class="highwire-cite-title" id="page-title">Correlation of Collateral Scores Derived from Whole-Brain Time-Resolved Flat Panel Detector Imaging in Acute Ischemic Stroke</h1>  
    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0">C.C. Kurmann</span>, <span class="highwire-citation-author" data-delta="1">J. Kaesmacher</span>, <span class="highwire-citation-author" data-delta="2">S. Pilgram-Pastor</span>, <span class="highwire-citation-author" data-delta="3">E.I. Piechowiak</span>, <span class="highwire-citation-author" data-delta="4">A. Scutelnic</span>, <span class="highwire-citation-author" data-delta="5">M.R. Heldner</span>, <span class="highwire-citation-author" data-delta="6">T. Dobrocky</span>, <span class="highwire-citation-author" data-delta="7">J. Gralla</span> and <span class="highwire-citation-author" data-delta="8">P. Mordasini</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">November 2022,  </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">43 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(11) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">1627-1632; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata">DOI: https://doi.org/10.3174/ajnr.A7657 </span></div>
  
  
  
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<div id="hw-article-author-popups-top-node-99649--81757712373" style="display: none;"><div class="author-tooltip-0"><div class="author-tooltip-name">C.C. Kurmann </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>From the University Institute of Diagnostic and Interventional Neuroradiology (C.C.K., J.K., S.P.-P., E.I.P., T.D., J.G., P.M.)</div><div class='author-affiliation'><span class='nlm-sup'>b</span>University Institute of Diagnostic and Interventional and Pediatric Radiology (C.C.K.)</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=C.C.%2BKurmann%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=Kurmann%20C&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%3AC.C.%2BKurmann%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/0000-0001-5770-5675" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for C.C. Kurmann</a></li></ul></div><div class="author-tooltip-1"><div class="author-tooltip-name">J. Kaesmacher </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>From the University Institute of Diagnostic and Interventional Neuroradiology (C.C.K., J.K., S.P.-P., E.I.P., T.D., J.G., P.M.)</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.%2BKaesmacher%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=Kaesmacher%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.%2BKaesmacher%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/0000-0002-9177-2289" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for J. Kaesmacher</a></li></ul></div><div class="author-tooltip-2"><div class="author-tooltip-name">S. Pilgram-Pastor </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>From the University Institute of Diagnostic and Interventional Neuroradiology (C.C.K., J.K., S.P.-P., E.I.P., T.D., J.G., P.M.)</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.%2BPilgram-Pastor%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=Pilgram-Pastor%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.%2BPilgram-Pastor%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">E.I. Piechowiak </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>From the University Institute of Diagnostic and Interventional Neuroradiology (C.C.K., J.K., S.P.-P., E.I.P., T.D., J.G., P.M.)</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=E.I.%2BPiechowiak%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=Piechowiak%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"><a href="/search/author1%3AE.I.%2BPiechowiak%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/0000-0001-5609-0998" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for E.I. Piechowiak</a></li></ul></div><div class="author-tooltip-4"><div class="author-tooltip-name">A. Scutelnic </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>c</span>Department of Neurology (A.S., M.R.H.), University Hospital Bern, Inselspital, University of Bern, Bern, Switzerland</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.%2BScutelnic%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=Scutelnic%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.%2BScutelnic%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/0000-0001-9053-584X" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for A. Scutelnic</a></li></ul></div><div class="author-tooltip-5"><div class="author-tooltip-name">M.R. Heldner </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>c</span>Department of Neurology (A.S., M.R.H.), University Hospital Bern, Inselspital, University of Bern, Bern, Switzerland</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.R.%2BHeldner%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=Heldner%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.R.%2BHeldner%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/0000-0002-3594-2159" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for M.R. Heldner</a></li></ul></div><div class="author-tooltip-6"><div class="author-tooltip-name">T. Dobrocky </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>From the University Institute of Diagnostic and Interventional Neuroradiology (C.C.K., J.K., S.P.-P., E.I.P., T.D., J.G., P.M.)</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.%2BDobrocky%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=Dobrocky%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.%2BDobrocky%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/0000-0002-6167-3343" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for T. Dobrocky</a></li></ul></div><div class="author-tooltip-7"><div class="author-tooltip-name">J. Gralla </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>From the University Institute of Diagnostic and Interventional Neuroradiology (C.C.K., J.K., S.P.-P., E.I.P., T.D., J.G., P.M.)</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.%2BGralla%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=Gralla%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.%2BGralla%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/0000-0003-1953-9033" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for J. Gralla</a></li></ul></div><div class="author-tooltip-8"><div class="author-tooltip-name">P. Mordasini </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>From the University Institute of Diagnostic and Interventional Neuroradiology (C.C.K., J.K., S.P.-P., E.I.P., T.D., J.G., P.M.)</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=P.%2BMordasini%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=Mordasini%20P&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%3AP.%2BMordasini%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/0000-0003-1712-4168" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for P. 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    	<div class="highwire-cite-metadata"><span  class="highwire-cite-metadata-volume highwire-cite-metadata">vol. 43 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">no. 11 </span><span  class="highwire-cite-metadata-page-string highwire-cite-metadata">1627-1632 </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">C.C. Kurmann</span><a id="xref-aff-1-1" 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>, </li><li class="contributor" id="contrib-2"><span class="name">J. Kaesmacher</span><a id="xref-aff-1-2" class="xref-aff" href="#aff-1">a</a>, </li><li class="contributor" id="contrib-3"><span class="name">S. Pilgram-Pastor</span><a id="xref-aff-1-3" class="xref-aff" href="#aff-1">a</a>, </li><li class="contributor" id="contrib-4"><span class="name">E.I. Piechowiak</span><a id="xref-aff-1-4" class="xref-aff" href="#aff-1">a</a>, </li><li class="contributor" id="contrib-5"><span class="name">A. Scutelnic</span><a id="xref-aff-3-1" class="xref-aff" href="#aff-3">c</a>, </li><li class="contributor" id="contrib-6"><span class="name">M.R. Heldner</span><a id="xref-aff-3-2" class="xref-aff" href="#aff-3">c</a>, </li><li class="contributor" id="contrib-7"><span class="name">T. Dobrocky</span><a id="xref-aff-1-5" class="xref-aff" href="#aff-1">a</a>, </li><li class="contributor" id="contrib-8"><span class="name">J. Gralla</span><a id="xref-aff-1-6" class="xref-aff" href="#aff-1">a</a> and </li><li class="last" id="contrib-9"><span class="name">P. Mordasini</span><a id="xref-aff-1-7" class="xref-aff" href="#aff-1">a</a></li></ol><ol class="affiliation-list"><li class="aff"><a id="aff-1" name="aff-1"></a><address><sup>a</sup>From the University Institute of Diagnostic and Interventional Neuroradiology (C.C.K., J.K., S.P.-P., E.I.P., T.D., J.G., P.M.)</address></li><li class="aff"><a id="aff-2" name="aff-2"></a><address><sup>b</sup>University Institute of Diagnostic and Interventional and Pediatric Radiology (C.C.K.)</address></li><li class="aff"><a id="aff-3" name="aff-3"></a><address><sup>c</sup>Department of Neurology (A.S., M.R.H.), University Hospital Bern, Inselspital, University of Bern, Bern, Switzerland</address></li></ol><ol class="corresp-list"><li class="corresp" id="corresp-1">Please address correspondence to Pasquale Mordasini, MD, MSc, <span class="addr-line">University Institute of Diagnostic and Interventional Neuroradiology, University Hospital Bern, Inselspital, University of Bern, Freiburgstrasse 10, CH 3010, Bern, Switzerland</span>; e-mail: <span class="em-link"><span class="em-addr">Pasquale.mordasini{at}insel.ch</span></span>; <a href="https://mobile.twitter.com/chris_kurmann">@chris_kurmann</a>; <a href="https://mobile.twitter.com/CheesemakerMD">@CheesemakerMD</a></li></ol></div></div><a href="http://ajnr-stage2.stage.highwire.org/content/43/11/1627.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-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0"><span class="nlm-given-names">C.C.</span> <span class="nlm-surname">Kurmann</span></span>, <span class="highwire-citation-author" data-delta="1"><span class="nlm-given-names">J.</span> <span class="nlm-surname">Kaesmacher</span></span>, <span class="highwire-citation-author" data-delta="2"><span class="nlm-given-names">S.</span> <span class="nlm-surname">Pilgram-Pastor</span></span>, <span class="highwire-citation-author" data-delta="3"><span class="nlm-given-names">E.I.</span> <span class="nlm-surname">Piechowiak</span></span>, <span class="highwire-citation-author" data-delta="4"><span class="nlm-given-names">A.</span> <span class="nlm-surname">Scutelnic</span></span>, <span class="highwire-citation-author" data-delta="5"><span class="nlm-given-names">M.R.</span> <span class="nlm-surname">Heldner</span></span>, <span class="highwire-citation-author" data-delta="6"><span class="nlm-given-names">T.</span> <span class="nlm-surname">Dobrocky</span></span>, <span class="highwire-citation-author" data-delta="7"><span class="nlm-given-names">J.</span> <span class="nlm-surname">Gralla</span></span>, <span class="highwire-citation-author" data-delta="8"><span class="nlm-given-names">P.</span> <span class="nlm-surname">Mordasini</span></span></span></div>
  
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      <div class="highwire-cite-title">Correlation of Collateral Scores Derived from Whole-Brain Time-Resolved Flat Panel Detector Imaging in Acute Ischemic Stroke</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">C.C.</span> <span class="nlm-surname">Kurmann</span></span>, <span class="highwire-citation-author" data-delta="1"><span class="nlm-given-names">J.</span> <span class="nlm-surname">Kaesmacher</span></span>, <span class="highwire-citation-author" data-delta="2"><span class="nlm-given-names">S.</span> <span class="nlm-surname">Pilgram-Pastor</span></span>, <span class="highwire-citation-author" data-delta="3"><span class="nlm-given-names">E.I.</span> <span class="nlm-surname">Piechowiak</span></span>, <span class="highwire-citation-author" data-delta="4"><span class="nlm-given-names">A.</span> <span class="nlm-surname">Scutelnic</span></span>, <span class="highwire-citation-author" data-delta="5"><span class="nlm-given-names">M.R.</span> <span class="nlm-surname">Heldner</span></span>, <span class="highwire-citation-author" data-delta="6"><span class="nlm-given-names">T.</span> <span class="nlm-surname">Dobrocky</span></span>, <span class="highwire-citation-author" data-delta="7"><span class="nlm-given-names">J.</span> <span class="nlm-surname">Gralla</span></span>, <span class="highwire-citation-author" data-delta="8"><span class="nlm-given-names">P.</span> <span class="nlm-surname">Mordasini</span></span></span></div>
  
    	<div class="highwire-cite-metadata"><span  class="highwire-cite-metadata-oa-ind highwire-cite-metadata"><i class="highwire-oa-indicator"></i> </span><span  class="highwire-cite-metadata-journal highwire-cite-metadata">American Journal of Neuroradiology </span><span  class="highwire-cite-metadata-date highwire-cite-metadata">Nov 2022, </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">43 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(11) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">1627-1632; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata"><span class="label">DOI:</span> 10.3174/ajnr.A7657 </span></div>
  
  
  
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