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<!DOCTYPE html>
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<meta name="DC.Title" content="MR Imaging of Subcallosal Artery Infarct Causing Amnesia after Surgery for Anterior Communicating Artery Aneurysm" />
<meta name="DC.Identifier" content="10.3174/ajnr.A4057" />
<meta name="DC.Date" content="2014-07-31" />
<meta name="DC.Publisher" content="American Journal of Neuroradiology" />
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<meta name="DC.Description" content="BACKGROUND AND PURPOSE: During surgery to treat an aneurysm in the anterior communicating artery, injury to the subcallosal artery, a perforator of the anterior communicating artery, may lead to infarction that produces basal forebrain amnesia after surgery. Our purpose was to examine whether 3D MR imaging can detect subcallosal artery infarction in patients with amnesia after surgery for an anterior communicating artery aneurysm.

MATERIALS AND METHODS: We evaluated 3D–T2-weighted MR images obtained a median of 4 months after treatment of anterior communicating artery aneurysm for the presence of infarcted foci in 10 consecutive patients with postoperative amnesia. Because the subcallosal artery and its neighboring perforator, the recurrent artery of Heubner, were considered the most easily affected vessels during that surgery, we focused mainly on 8 regions of the subcallosal artery territory per hemisphere and 5 regions of the recurrent artery of Heubner territory per hemisphere.

RESULTS: All 10 patients had infarcts in the territory of the subcallosal artery (median, 9 regions per patient), and most were bilateral (9 of 10 patients). Five patients had additional infarcted foci in the territory of the recurrent artery of Heubner (median, 1 region per patient), all unilateral. Among the regions perfused by the subcallosal artery, the column of the fornix was involved in all patients; the anterior commissure, in 9; and the paraterminal gyrus, in 8 patients.

CONCLUSIONS: 3D MR imaging revealed subcallosal artery infarction, the distribution of which was mostly bilateral, presumably owing to the unpairedness of that artery, in patients with postoperative amnesia after anterior communicating artery aneurysm repair.

### Abbreviations

ACoA
:   anterior communicating artery
IQ
:   full-scale intelligence quotient
MQ
:   general memory quotient
RAH
:   recurrent artery of Heubner
VISTA
:   volumetric isotropic turbo spin-echo acquisition" />
<meta name="DC.Contributor" content="S. Mugikura" />
<meta name="DC.Contributor" content="H. Kikuchi" />
<meta name="DC.Contributor" content="T. Fujii" />
<meta name="DC.Contributor" content="T. Murata" />
<meta name="DC.Contributor" content="K. Takase" />
<meta name="DC.Contributor" content="E. Mori" />
<meta name="DC.Contributor" content="S. Marinković" />
<meta name="DC.Contributor" content="S. Takahashi" />
<meta name="article:published_time" content="2014-07-31" />
<meta name="article:section" content="BRAIN" />
<meta name="citation_title" content="MR Imaging of Subcallosal Artery Infarct Causing Amnesia after Surgery for Anterior Communicating Artery Aneurysm" />
<meta name="citation_abstract" lang="en" content="&lt;h3&gt;BACKGROUND AND PURPOSE:&lt;/h3&gt;
&lt;p&gt;During surgery to treat an aneurysm in the anterior communicating artery, injury to the subcallosal artery, a perforator of the anterior communicating artery, may lead to infarction that produces basal forebrain amnesia after surgery. Our purpose was to examine whether 3D MR imaging can detect subcallosal artery infarction in patients with amnesia after surgery for an anterior communicating artery aneurysm.&lt;/p&gt;&lt;h3&gt;MATERIALS AND METHODS:&lt;/h3&gt;
&lt;p&gt;We evaluated 3D–T2-weighted MR images obtained a median of 4 months after treatment of anterior communicating artery aneurysm for the presence of infarcted foci in 10 consecutive patients with postoperative amnesia. Because the subcallosal artery and its neighboring perforator, the recurrent artery of Heubner, were considered the most easily affected vessels during that surgery, we focused mainly on 8 regions of the subcallosal artery territory per hemisphere and 5 regions of the recurrent artery of Heubner territory per hemisphere.&lt;/p&gt;&lt;h3&gt;RESULTS:&lt;/h3&gt;
&lt;p&gt;All 10 patients had infarcts in the territory of the subcallosal artery (median, 9 regions per patient), and most were bilateral (9 of 10 patients). Five patients had additional infarcted foci in the territory of the recurrent artery of Heubner (median, 1 region per patient), all unilateral. Among the regions perfused by the subcallosal artery, the column of the fornix was involved in all patients; the anterior commissure, in 9; and the paraterminal gyrus, in 8 patients.&lt;/p&gt;&lt;h3&gt;CONCLUSIONS:&lt;/h3&gt;
&lt;p&gt;3D MR imaging revealed subcallosal artery infarction, the distribution of which was mostly bilateral, presumably owing to the unpairedness of that artery, in patients with postoperative amnesia after anterior communicating artery aneurysm repair.&lt;/p&gt;" />
<meta name="citation_journal_title" content="American Journal of Neuroradiology" />
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<meta name="citation_publication_date" content="2014/07/31" />
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<meta name="citation_author" content="S. Mugikura" />
<meta name="citation_author_institution" content="From the Departments of Diagnostic Radiology (S. Mugikura, T.M., K.T., S.T.) and Behavioral Neurology and Cognitive Neuroscience (H.K., T.F., E.M.), Tohoku University, Graduate School of Medicine, Sendai, Japan; and Institute of Anatomy (S. Marinković), School of Medicine, University of Belgrade, Belgrade, Serbia." />
<meta name="citation_author" content="H. Kikuchi" />
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<meta name="citation_author" content="T. Fujii" />
<meta name="citation_author_institution" content="From the Departments of Diagnostic Radiology (S. Mugikura, T.M., K.T., S.T.) and Behavioral Neurology and Cognitive Neuroscience (H.K., T.F., E.M.), Tohoku University, Graduate School of Medicine, Sendai, Japan; and Institute of Anatomy (S. Marinković), School of Medicine, University of Belgrade, Belgrade, Serbia." />
<meta name="citation_author" content="T. Murata" />
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<meta name="citation_author" content="K. Takase" />
<meta name="citation_author_institution" content="From the Departments of Diagnostic Radiology (S. Mugikura, T.M., K.T., S.T.) and Behavioral Neurology and Cognitive Neuroscience (H.K., T.F., E.M.), Tohoku University, Graduate School of Medicine, Sendai, Japan; and Institute of Anatomy (S. Marinković), School of Medicine, University of Belgrade, Belgrade, Serbia." />
<meta name="citation_author" content="E. Mori" />
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<meta name="citation_author" content="S. Takahashi" />
<meta name="citation_author_institution" content="From the Departments of Diagnostic Radiology (S. Mugikura, T.M., K.T., S.T.) and Behavioral Neurology and Cognitive Neuroscience (H.K., T.F., E.M.), Tohoku University, Graduate School of Medicine, Sendai, Japan; and Institute of Anatomy (S. Marinković), School of Medicine, University of Belgrade, Belgrade, Serbia." />
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<meta name="twitter:title" content="MR Imaging of Subcallosal Artery Infarct Causing Amnesia after Surgery for Anterior Communicating Artery Aneurysm" />
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<meta name="twitter:description" content="BACKGROUND AND PURPOSE: During surgery to treat an aneurysm in the anterior communicating artery, injury to the subcallosal artery, a perforator of the anterior communicating artery, may lead to infarction that produces basal forebrain amnesia after surgery. Our purpose was to examine whether 3D MR imaging can detect subcallosal artery infarction in patients with amnesia after surgery for an anterior communicating artery aneurysm.

MATERIALS AND METHODS: We evaluated 3D–T2-weighted MR images obtained a median of 4 months after treatment of anterior communicating artery aneurysm for the presence of infarcted foci in 10 consecutive patients with postoperative amnesia. Because the subcallosal artery and its neighboring perforator, the recurrent artery of Heubner, were considered the most easily affected vessels during that surgery, we focused mainly on 8 regions of the subcallosal artery territory per hemisphere and 5 regions of the recurrent artery of Heubner territory per hemisphere.

RESULTS: All 10 patients had infarcts in the territory of the subcallosal artery (median, 9 regions per patient), and most were bilateral (9 of 10 patients). Five patients had additional infarcted foci in the territory of the recurrent artery of Heubner (median, 1 region per patient), all unilateral. Among the regions perfused by the subcallosal artery, the column of the fornix was involved in all patients; the anterior commissure, in 9; and the paraterminal gyrus, in 8 patients.

CONCLUSIONS: 3D MR imaging revealed subcallosal artery infarction, the distribution of which was mostly bilateral, presumably owing to the unpairedness of that artery, in patients with postoperative amnesia after anterior communicating artery aneurysm repair.

### Abbreviations

ACoA
:   anterior communicating artery
IQ
:   full-scale intelligence quotient
MQ
:   general memory quotient
RAH
:   recurrent artery of Heubner
VISTA
:   volumetric isotropic turbo spin-echo acquisition" />
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<meta name="og-description" property="og:description" content="BACKGROUND AND PURPOSE: During surgery to treat an aneurysm in the anterior communicating artery, injury to the subcallosal artery, a perforator of the anterior communicating artery, may lead to infarction that produces basal forebrain amnesia after surgery. Our purpose was to examine whether 3D MR imaging can detect subcallosal artery infarction in patients with amnesia after surgery for an anterior communicating artery aneurysm.

MATERIALS AND METHODS: We evaluated 3D–T2-weighted MR images obtained a median of 4 months after treatment of anterior communicating artery aneurysm for the presence of infarcted foci in 10 consecutive patients with postoperative amnesia. Because the subcallosal artery and its neighboring perforator, the recurrent artery of Heubner, were considered the most easily affected vessels during that surgery, we focused mainly on 8 regions of the subcallosal artery territory per hemisphere and 5 regions of the recurrent artery of Heubner territory per hemisphere.

RESULTS: All 10 patients had infarcts in the territory of the subcallosal artery (median, 9 regions per patient), and most were bilateral (9 of 10 patients). Five patients had additional infarcted foci in the territory of the recurrent artery of Heubner (median, 1 region per patient), all unilateral. Among the regions perfused by the subcallosal artery, the column of the fornix was involved in all patients; the anterior commissure, in 9; and the paraterminal gyrus, in 8 patients.

CONCLUSIONS: 3D MR imaging revealed subcallosal artery infarction, the distribution of which was mostly bilateral, presumably owing to the unpairedness of that artery, in patients with postoperative amnesia after anterior communicating artery aneurysm repair.

### Abbreviations

ACoA
:   anterior communicating artery
IQ
:   full-scale intelligence quotient
MQ
:   general memory quotient
RAH
:   recurrent artery of Heubner
VISTA
:   volumetric isotropic turbo spin-echo acquisition" />
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    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0">S. Mugikura</span>, <span class="highwire-citation-author" data-delta="1">H. Kikuchi</span>, <span class="highwire-citation-author" data-delta="2">T. Fujii</span>, <span class="highwire-citation-author" data-delta="3">T. Murata</span>, <span class="highwire-citation-author" data-delta="4">K. Takase</span>, <span class="highwire-citation-author" data-delta="5">E. Mori</span>, <span class="highwire-citation-author" data-delta="6">S. Marinković</span> and <span class="highwire-citation-author" data-delta="7">S. Takahashi</span></span></div>
  
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<div id="hw-article-author-popups-top-node-50760--6705884601" style="display: none;"><div class="author-tooltip-0"><div class="author-tooltip-name">S. Mugikura </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'>From the Departments of Diagnostic Radiology (S. Mugikura, T.M., K.T., S.T.) and Behavioral Neurology and Cognitive Neuroscience (H.K., T.F., E.M.), Tohoku University, Graduate School of Medicine, Sendai, Japan; and Institute of Anatomy (S. 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      <div class="highwire-cite-title">MR Imaging of Subcallosal Artery Infarct Causing Amnesia after Surgery for Anterior Communicating Artery Aneurysm</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">S.</span> <span class="nlm-surname">Mugikura</span></span>, <span class="highwire-citation-author" data-delta="1"><span class="nlm-given-names">H.</span> <span class="nlm-surname">Kikuchi</span></span>, <span class="highwire-citation-author" data-delta="2"><span class="nlm-given-names">T.</span> <span class="nlm-surname">Fujii</span></span>, <span class="highwire-citation-author" data-delta="3"><span class="nlm-given-names">T.</span> <span class="nlm-surname">Murata</span></span>, <span class="highwire-citation-author" data-delta="4"><span class="nlm-given-names">K.</span> <span class="nlm-surname">Takase</span></span>, <span class="highwire-citation-author" data-delta="5"><span class="nlm-given-names">E.</span> <span class="nlm-surname">Mori</span></span>, <span class="highwire-citation-author" data-delta="6"><span class="nlm-given-names">S.</span> <span class="nlm-surname">Marinković</span></span>, <span class="highwire-citation-author" data-delta="7"><span class="nlm-given-names">S.</span> <span class="nlm-surname">Takahashi</span></span></span></div>
  
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