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<meta name="DC.Title" content="Comparison of Image Quality and Radiation Dose in Pediatric Temporal Bone CT Using Photon-Counting Detector CT and Energy-Integrating Detector CT" />
<meta name="DC.Identifier" content="10.3174/ajnr.A8276" />
<meta name="DC.Date" content="2024-09-01" />
<meta name="DC.Publisher" content="American Journal of Neuroradiology" />
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<meta name="DC.Description" content="BACKGROUND AND PURPOSE: Currently, there is a lack of research directly comparing photon-counting detector CT (PCD-CT) and energy-integrating detector CT (EID-CT) in pediatric temporal bone CT imaging. The purpose of this study was to compare the image quality and radiation dose of temporal bone CT scans in pediatric patients acquired with PCD-CT and EID-CT.

MATERIALS AND METHODS: The retrospective study included a total of 110 pediatric temporal bone CT scans (PCD-CT, n = 52; EID-CT, n = 58). Two independent readers evaluated the spatial resolution of 4 anatomic structures (tympanic membrane, incudostapedial joint, stapedial crura, and cochlear modiolus) and overall image quality by using a 4-point scale. Interreader agreement was assessed. Dose-length product for each CT was compared, and subgroup analyses were performed based on age (younger than 3 years, 3–5 years, 6–11 years, and 12 years and above).

RESULTS: PCD-CT demonstrated statistically significantly higher scores than EID-CT for all items (tympanic membrane, 2.9 versus 2.4; incudostapedial joint, 3.6 versus 2.6; stapedial crura, 3.2 versus 2.4; cochlear modiolus, 3.4 versus 2.8; overall image quality, 3.6 versus 2.8; P  &lt; .05). Interreader agreement ranged from good to excellent (interclass correlation coefficients, 0.6–0.81). PCD-CT exhibited a 43% dose reduction compared with EID-CT, with a particularly substantial reduction of over 70% in the subgroups of children younger than 6 years.

CONCLUSIONS: PCD temporal bone CT achieves significantly superior imaging quality at a lower radiation dose compared with EID-CT.

AEC
:   automatic exposure control
DLP
:   dose-length product
EID-CT
:   energy-integrating detector CT
ICC
:   interclass correlation coefficient
PCD-CT
:   photon-counting detector CT" />
<meta name="DC.Contributor" content="Jeong Sub Lee" />
<meta name="DC.Contributor" content="John Kim" />
<meta name="DC.Contributor" content="Jayapalli R. Bapuraj" />
<meta name="DC.Contributor" content="Ashok Srinivasan" />
<meta name="article:published_time" content="2024-09-01" />
<meta name="article:section" content="Pediatric Neuroimaging" />
<meta name="citation_title" content="Comparison of Image Quality and Radiation Dose in Pediatric Temporal Bone CT Using Photon-Counting Detector CT and Energy-Integrating Detector CT" />
<meta name="citation_abstract" lang="en" content="&lt;h3&gt;BACKGROUND AND PURPOSE:&lt;/h3&gt;
&lt;p&gt;Currently, there is a lack of research directly comparing photon-counting detector CT (PCD-CT) and energy-integrating detector CT (EID-CT) in pediatric temporal bone CT imaging. The purpose of this study was to compare the image quality and radiation dose of temporal bone CT scans in pediatric patients acquired with PCD-CT and EID-CT.&lt;/p&gt;&lt;h3&gt;MATERIALS AND METHODS:&lt;/h3&gt;
&lt;p&gt;The retrospective study included a total of 110 pediatric temporal bone CT scans (PCD-CT, &lt;i&gt;n&lt;/i&gt; = 52; EID-CT, &lt;i&gt;n&lt;/i&gt; = 58). Two independent readers evaluated the spatial resolution of 4 anatomic structures (tympanic membrane, incudostapedial joint, stapedial crura, and cochlear modiolus) and overall image quality by using a 4-point scale. Interreader agreement was assessed. Dose-length product for each CT was compared, and subgroup analyses were performed based on age (younger than 3 years, 3–5 years, 6–11 years, and 12 years and above).&lt;/p&gt;&lt;h3&gt;RESULTS:&lt;/h3&gt;
&lt;p&gt;PCD-CT demonstrated statistically significantly higher scores than EID-CT for all items (tympanic membrane, 2.9 versus 2.4; incudostapedial joint, 3.6 versus 2.6; stapedial crura, 3.2 versus 2.4; cochlear modiolus, 3.4 versus 2.8; overall image quality, 3.6 versus 2.8; &lt;i&gt;P &lt;/i&gt;&amp;lt; .05). Interreader agreement ranged from good to excellent (interclass correlation coefficients, 0.6–0.81). PCD-CT exhibited a 43% dose reduction compared with EID-CT, with a particularly substantial reduction of over 70% in the subgroups of children younger than 6 years.&lt;/p&gt;&lt;h3&gt;CONCLUSIONS:&lt;/h3&gt;
&lt;p&gt;PCD temporal bone CT achieves significantly superior imaging quality at a lower radiation dose compared with EID-CT.&lt;/p&gt;" />
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<meta name="citation_author_institution" content="aFrom the Department of Radiology (J.S.L.), Jeju National University Hospital, Jeju National University College of Medicine, Jeju-si, Jeju-do, Republic of Korea" />
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<meta name="twitter:title" content="Comparison of Image Quality and Radiation Dose in Pediatric Temporal Bone CT Using Photon-Counting Detector CT and Energy-Integrating Detector CT" />
<meta name="twitter:card" content="summary_large_image" />
<meta name="twitter:image" content="http://ajnr-stage2.stage.highwire.org/sites/default/files/highwire/ajnr/45/9.cover-source.jpg" />
<meta name="twitter:description" content="BACKGROUND AND PURPOSE: Currently, there is a lack of research directly comparing photon-counting detector CT (PCD-CT) and energy-integrating detector CT (EID-CT) in pediatric temporal bone CT imaging. The purpose of this study was to compare the image quality and radiation dose of temporal bone CT scans in pediatric patients acquired with PCD-CT and EID-CT.

MATERIALS AND METHODS: The retrospective study included a total of 110 pediatric temporal bone CT scans (PCD-CT, n = 52; EID-CT, n = 58). Two independent readers evaluated the spatial resolution of 4 anatomic structures (tympanic membrane, incudostapedial joint, stapedial crura, and cochlear modiolus) and overall image quality by using a 4-point scale. Interreader agreement was assessed. Dose-length product for each CT was compared, and subgroup analyses were performed based on age (younger than 3 years, 3–5 years, 6–11 years, and 12 years and above).

RESULTS: PCD-CT demonstrated statistically significantly higher scores than EID-CT for all items (tympanic membrane, 2.9 versus 2.4; incudostapedial joint, 3.6 versus 2.6; stapedial crura, 3.2 versus 2.4; cochlear modiolus, 3.4 versus 2.8; overall image quality, 3.6 versus 2.8; P  &lt; .05). Interreader agreement ranged from good to excellent (interclass correlation coefficients, 0.6–0.81). PCD-CT exhibited a 43% dose reduction compared with EID-CT, with a particularly substantial reduction of over 70% in the subgroups of children younger than 6 years.

CONCLUSIONS: PCD temporal bone CT achieves significantly superior imaging quality at a lower radiation dose compared with EID-CT.

AEC
:   automatic exposure control
DLP
:   dose-length product
EID-CT
:   energy-integrating detector CT
ICC
:   interclass correlation coefficient
PCD-CT
:   photon-counting detector CT" />
<meta name="og-title" property="og:title" content="Comparison of Image Quality and Radiation Dose in Pediatric Temporal Bone CT Using Photon-Counting Detector CT and Energy-Integrating Detector CT" />
<meta name="og-url" property="og:url" content="http://ajnr-stage2.stage.highwire.org/content/45/9/1322" />
<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: Currently, there is a lack of research directly comparing photon-counting detector CT (PCD-CT) and energy-integrating detector CT (EID-CT) in pediatric temporal bone CT imaging. The purpose of this study was to compare the image quality and radiation dose of temporal bone CT scans in pediatric patients acquired with PCD-CT and EID-CT.

MATERIALS AND METHODS: The retrospective study included a total of 110 pediatric temporal bone CT scans (PCD-CT, n = 52; EID-CT, n = 58). Two independent readers evaluated the spatial resolution of 4 anatomic structures (tympanic membrane, incudostapedial joint, stapedial crura, and cochlear modiolus) and overall image quality by using a 4-point scale. Interreader agreement was assessed. Dose-length product for each CT was compared, and subgroup analyses were performed based on age (younger than 3 years, 3–5 years, 6–11 years, and 12 years and above).

RESULTS: PCD-CT demonstrated statistically significantly higher scores than EID-CT for all items (tympanic membrane, 2.9 versus 2.4; incudostapedial joint, 3.6 versus 2.6; stapedial crura, 3.2 versus 2.4; cochlear modiolus, 3.4 versus 2.8; overall image quality, 3.6 versus 2.8; P  &lt; .05). Interreader agreement ranged from good to excellent (interclass correlation coefficients, 0.6–0.81). PCD-CT exhibited a 43% dose reduction compared with EID-CT, with a particularly substantial reduction of over 70% in the subgroups of children younger than 6 years.

CONCLUSIONS: PCD temporal bone CT achieves significantly superior imaging quality at a lower radiation dose compared with EID-CT.

AEC
:   automatic exposure control
DLP
:   dose-length product
EID-CT
:   energy-integrating detector CT
ICC
:   interclass correlation coefficient
PCD-CT
:   photon-counting detector CT" />
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    <div class="highwire-article-citation highwire-citation-type-highwire-article node110104--5" data-node-nid="110104" id="top-node-110104--6711534421" data-pisa="ajnr;45/9/1322" data-pisa-master="ajnr;ajnr.A8276" data-apath="/ajnr/45/9/1322.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">Pediatric Neuroimaging</span></span></div>
  
      <div class="highwire-cite-access"><span class="highwire-citation-access highwire-citation-access-check" data-pisa-id="ajnr;ajnr.A8276" data-atom-uri="/ajnr/45/9/1322.atom" data-request-view="full"></span></div>
  
      <h1 class="highwire-cite-title" id="page-title">Comparison of Image Quality and Radiation Dose in Pediatric Temporal Bone CT Using Photon-Counting Detector CT and Energy-Integrating Detector CT</h1>  
    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0">Jeong Sub Lee</span>, <span class="highwire-citation-author" data-delta="1">John Kim</span>, <span class="highwire-citation-author" data-delta="2">Jayapalli R. Bapuraj</span> and <span class="highwire-citation-author" data-delta="3">Ashok Srinivasan</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">September 2024,  </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">45 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(9) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">1322-1326; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata">DOI: https://doi.org/10.3174/ajnr.A8276 </span></div>
  
  
  
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<div id="hw-article-author-popups-top-node-110104--6711534421" style="display: none;"><div class="author-tooltip-0"><div class="author-tooltip-name">Jeong Sub Lee </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>From the Department of Radiology (J.S.L.), Jeju National University Hospital, Jeju National University College of Medicine, Jeju-si, Jeju-do, Republic of Korea</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=Jeong%2BSub%2BLee%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=Lee%20JS&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%3AJeong%2BSub%2BLee%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/0000-0002-4120-8655" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for Jeong Sub Lee</a></li></ul></div><div class="author-tooltip-1"><div class="author-tooltip-name">John Kim </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>b</span>Department of Radiology (J.K., J.R.B., A.S.), University of Michigan, Ann Arbor, Michigan.</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=John%2BKim%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=Kim%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%3AJohn%2BKim%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/0000-0002-9223-7640" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for John Kim</a></li></ul></div><div class="author-tooltip-2"><div class="author-tooltip-name">Jayapalli R. Bapuraj </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>b</span>Department of Radiology (J.K., J.R.B., A.S.), University of Michigan, Ann Arbor, Michigan.</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=Jayapalli%2BR.%2BBapuraj%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=Bapuraj%20JR&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%3AJayapalli%2BR.%2BBapuraj%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/0000-0003-3933-203X" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for Jayapalli R. Bapuraj</a></li></ul></div><div class="author-tooltip-3"><div class="author-tooltip-name">Ashok Srinivasan </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>b</span>Department of Radiology (J.K., J.R.B., A.S.), University of Michigan, Ann Arbor, Michigan.</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=Ashok%2BSrinivasan%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=Srinivasan%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%3AAshok%2BSrinivasan%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/0000-0002-4400-1959" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for Ashok Srinivasan</a></li></ul></div></div></div>  </div>

  
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    <div class="highwire-markup"><div xmlns="http://www.w3.org/1999/xhtml" xmlns:xhtml="http://www.w3.org/1999/xhtml" class="section ref-list" id="ref-list-1"><h2 class="">References</h2><ol class="cit-list ref-use-labels"><li><span class="ref-label">1.</span><a class="rev-xref-ref" href="#xref-ref-1-1" title="View reference 1. in text" id="ref-1">↵</a><div class="cit ref-cit ref-journal" id="cit-45.9.1322.1" data-doi="10.1148/rg.261055703"><div class="cit-metadata"><ol class="cit-auth-list"><li><span class="cit-auth"><span class="cit-name-surname">Lane</span>  <span class="cit-name-given-names">JI</span></span>, </li><li><span class="cit-auth"><span class="cit-name-surname">Lindell</span>  <span class="cit-name-given-names">EP</span></span>, </li><li><span class="cit-auth"><span class="cit-name-surname">Witte</span>  <span class="cit-name-given-names">RJ</span></span>, <span class="cit-etal">et al</span></li></ol><cite>. <span class="cit-article-title">Middle and inner ear: improved 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      <div class="highwire-cite-highlight"><a href="/content/45/9"  class="highlight-image-linked"><img class="highlight-image" src="http://ajnr-stage2.stage.highwire.org/sites/default/files/styles/medium/public/highwire/ajnr/45/9.cover-source.jpg?itok=IKaEZsgB" alt="American Journal of Neuroradiology: 45 (9)" /></a></div>
  
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        	<div class="highwire-cite-metadata"><span  class="highwire-cite-metadata-volume highwire-cite-metadata">Vol. 45</span>, <span  class="highwire-cite-metadata-issue highwire-cite-metadata">Issue 9 </span><div  class="highwire-cite-metadata-pubdate highwire-cite-metadata">1 Sep 2024 </div></div>
      
      
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