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<meta name="DC.Title" content="Visibility of calcium on MR and CT: can MR show calcium that CT cannot?" />
<meta name="DC.Date" content="1994-06-01" />
<meta name="DC.Publisher" content="American Journal of Neuroradiology" />
<meta name="DC.Rights" content="Copyright © American Society of Neuroradiology" />
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<meta name="DC.Description" content="PURPOSE To test the hypothesis that calcium can be visible on MR images without being visible on CT.

METHODS Five different calcium salts ranging in concentration from 0 to 0.45 g/mL were suspended in 2% agarose gel and studied using T2-weighted MR, T1-weighted MR, and CT. MR signal intensity, CT attenuation, and image noise were measured. Relative visibility was determined from these measurements.

RESULTS CT was shown to be more than 10 times as sensitive as T2-weighted MR or T1-weighted MR for the detection of calcium.

CONCLUSION MR cannot show calcium that is occult on CT." />
<meta name="DC.Contributor" content="W Kucharczyk" />
<meta name="DC.Contributor" content="R M Henkelman" />
<meta name="article:published_time" content="1994-06-01" />
<meta name="citation_title" content="Visibility of calcium on MR and CT: can MR show calcium that CT cannot?" />
<meta name="citation_abstract" lang="en" content="&lt;h3&gt;PURPOSE&lt;/h3&gt;
&lt;p&gt;To test the hypothesis that calcium can be visible on MR images without being visible on CT.&lt;/p&gt;&lt;h3&gt;METHODS&lt;/h3&gt;
&lt;p&gt;Five different calcium salts ranging in concentration from 0 to 0.45 g/mL were suspended in 2% agarose gel and studied using T2-weighted MR, T1-weighted MR, and CT. MR signal intensity, CT attenuation, and image noise were measured. Relative visibility was determined from these measurements.&lt;/p&gt;&lt;h3&gt;RESULTS&lt;/h3&gt;
&lt;p&gt;CT was shown to be more than 10 times as sensitive as T2-weighted MR or T1-weighted MR for the detection of calcium.&lt;/p&gt;&lt;h3&gt;CONCLUSION&lt;/h3&gt;
&lt;p&gt;MR cannot show calcium that is occult on CT.&lt;/p&gt;" />
<meta name="citation_journal_title" content="American Journal of Neuroradiology" />
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<meta name="citation_publication_date" content="1994/06/01" />
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<meta name="citation_author" content="W Kucharczyk" />
<meta name="citation_author_institution" content="Department of Radiology, University of Toronto, Ontario, Canada." />
<meta name="citation_author" content="R M Henkelman" />
<meta name="citation_author_institution" content="Department of Radiology, University of Toronto, Ontario, Canada." />
<meta name="twitter:title" content="Visibility of calcium on MR and CT: can MR show calcium that CT cannot?" />
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<meta name="twitter:description" content="PURPOSE To test the hypothesis that calcium can be visible on MR images without being visible on CT.

METHODS Five different calcium salts ranging in concentration from 0 to 0.45 g/mL were suspended in 2% agarose gel and studied using T2-weighted MR, T1-weighted MR, and CT. MR signal intensity, CT attenuation, and image noise were measured. Relative visibility was determined from these measurements.

RESULTS CT was shown to be more than 10 times as sensitive as T2-weighted MR or T1-weighted MR for the detection of calcium.

CONCLUSION MR cannot show calcium that is occult on CT." />
<meta name="og-title" property="og:title" content="Visibility of calcium on MR and CT: can MR show calcium that CT cannot?" />
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<meta name="og-site-name" property="og:site_name" content="American Journal of Neuroradiology" />
<meta name="og-description" property="og:description" content="PURPOSE To test the hypothesis that calcium can be visible on MR images without being visible on CT.

METHODS Five different calcium salts ranging in concentration from 0 to 0.45 g/mL were suspended in 2% agarose gel and studied using T2-weighted MR, T1-weighted MR, and CT. MR signal intensity, CT attenuation, and image noise were measured. Relative visibility was determined from these measurements.

RESULTS CT was shown to be more than 10 times as sensitive as T2-weighted MR or T1-weighted MR for the detection of calcium.

CONCLUSION MR cannot show calcium that is occult on CT." />
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      <h1 class="highwire-cite-title" id="page-title">Visibility of calcium on MR and CT: can MR show calcium that CT cannot?</h1>  
    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0">W Kucharczyk</span> and <span class="highwire-citation-author" data-delta="1">R M Henkelman</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 1994,  </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">15 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(6) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">1145-1148; </span></div>
  
  
  
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<div id="hw-article-author-popups-top-node-6080--61089796465" style="display: none;"><div class="author-tooltip-0"><div class="author-tooltip-name">W Kucharczyk </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'>Department of Radiology, University of Toronto, Ontario, Canada.</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=W%2BKucharczyk%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=Kucharczyk%20W&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%3AW%2BKucharczyk%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">R M Henkelman </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'>Department of Radiology, University of Toronto, Ontario, Canada.</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%2BM%2BHenkelman%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=Henkelman%20RM&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%3AR%2BM%2BHenkelman%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>METHODS</strong> Five different calcium salts ranging in concentration from 0 to 0.45 g/mL were suspended in 2% agarose gel and studied using T2-weighted MR, T1-weighted MR, and CT. MR signal intensity, CT attenuation, and image noise were measured. Relative visibility was determined from these measurements.</p>
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          <p id="p-4"><strong>CONCLUSION</strong> MR cannot show calcium that is occult on CT.</p>
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        	<div class="highwire-cite-metadata"><span  class="highwire-cite-metadata-volume highwire-cite-metadata">Vol. 15</span>, <span  class="highwire-cite-metadata-issue highwire-cite-metadata">Issue 6 </span><div  class="highwire-cite-metadata-pubdate highwire-cite-metadata">1 Jun 1994 </div></div>
      
      
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      <div class="highwire-cite-title">Visibility of calcium on MR and CT: can MR show calcium that CT cannot?</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">W</span> <span class="nlm-surname">Kucharczyk</span></span>, <span class="highwire-citation-author" data-delta="1"><span class="nlm-given-names">R M</span> <span class="nlm-surname">Henkelman</span></span></span></div>
  
    	<div class="highwire-cite-metadata"><span  class="highwire-cite-metadata-journal highwire-cite-metadata">American Journal of Neuroradiology </span><span  class="highwire-cite-metadata-date highwire-cite-metadata">Jun 1994, </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">15 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(6) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">1145-1148; </span></div>
  
  
  
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