Dual-energy computed tomography colonography using dual-layer spectral detector computed tomography: Utility of virtual monochromatic imaging for electronic cleansing
•Tagging density on VMI at low keV was significantly higher than that on 120 kVp.•VMI can improve the image quality and electronic cleansing performance.•Dual-layer spectral detector CT allows need-based retrospective tagging calibration. To assess the utility of virtual monochromatic imaging (VMI)...
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| Veröffentlicht in: | European journal of radiology 2018-11, Vol.108, p.7-12 |
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| container_title | European journal of radiology |
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| creator | Taguchi, Narumi Oda, Seitaro Imuta, Masanori Yamamura, Sadahiro Yokota, Yasuhiro Nakaura, Takeshi Nagayama, Yasunori Kidoh, Masafumi Utsunomiya, Daisuke Funama, Yoshinori Baba, Hideo Yamashita, Yasuyuki |
| description | •Tagging density on VMI at low keV was significantly higher than that on 120 kVp.•VMI can improve the image quality and electronic cleansing performance.•Dual-layer spectral detector CT allows need-based retrospective tagging calibration.
To assess the utility of virtual monochromatic imaging (VMI) using a dual-layer spectral detector CT for electronic cleansing in fecal-tagging CT colonography (CTC).
This study included 35 patients who underwent fecal-tagging CTC with a dual-layer detector spectral CT scanner. Conventional images at 120 kVp and VMI at 40, 50, and 60 keV were reconstructed. Quantitative image quality parameters, i.e., tagging density and image noise, were compared and the visual image quality was scored on a four-point scale. We recorded the number of the colon segments with appropriate tagging density (≥300 HU) for each patient and used these data to compare the reconstructions. In addition, electronic cleansing performance was semi-quantitatively assessed using a four-point scale.
The mean tagging density on VMI was significantly higher than that on conventional 120 kVp images. The number of colon segments with appropriate tagging density on VMI were significantly higher than that on conventional 120 kVp images. There was no significant difference among the reconstructed images with respect to image noise. Scores for subjective image quality and electronic cleansing performance on VMI were significantly higher than those on conventional 120 kVp images.
With dual-layer spectral detector CT, VMI can yield significantly better fecal-tagged CTC image quality and improve electronic cleansing performance. |
| doi_str_mv | 10.1016/j.ejrad.2018.09.011 |
| format | Article |
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To assess the utility of virtual monochromatic imaging (VMI) using a dual-layer spectral detector CT for electronic cleansing in fecal-tagging CT colonography (CTC).
This study included 35 patients who underwent fecal-tagging CTC with a dual-layer detector spectral CT scanner. Conventional images at 120 kVp and VMI at 40, 50, and 60 keV were reconstructed. Quantitative image quality parameters, i.e., tagging density and image noise, were compared and the visual image quality was scored on a four-point scale. We recorded the number of the colon segments with appropriate tagging density (≥300 HU) for each patient and used these data to compare the reconstructions. In addition, electronic cleansing performance was semi-quantitatively assessed using a four-point scale.
The mean tagging density on VMI was significantly higher than that on conventional 120 kVp images. The number of colon segments with appropriate tagging density on VMI were significantly higher than that on conventional 120 kVp images. There was no significant difference among the reconstructed images with respect to image noise. Scores for subjective image quality and electronic cleansing performance on VMI were significantly higher than those on conventional 120 kVp images.
With dual-layer spectral detector CT, VMI can yield significantly better fecal-tagged CTC image quality and improve electronic cleansing performance.</description><identifier>ISSN: 0720-048X</identifier><identifier>EISSN: 1872-7727</identifier><identifier>DOI: 10.1016/j.ejrad.2018.09.011</identifier><identifier>PMID: 30396674</identifier><language>eng</language><publisher>Ireland: Elsevier B.V</publisher><subject>Adult ; Aged ; Colon cancer ; Colonic Neoplasms - diagnostic imaging ; Colonography, Computed Tomographic - methods ; CT colonography ; Dual-energy CT ; Dual-layer spectral detector CT ; Electronic cleansing ; Feces ; Female ; Humans ; Image Processing, Computer-Assisted - methods ; Male ; Middle Aged ; Tomography Scanners, X-Ray Computed ; Tomography, X-Ray Computed - methods</subject><ispartof>European journal of radiology, 2018-11, Vol.108, p.7-12</ispartof><rights>2018 Elsevier B.V.</rights><rights>Copyright © 2018 Elsevier B.V. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c425t-1b91c20284297096e6161f8afd8bd16863c22ccc7b44ca8bc48ba1edeb56a3b73</citedby><cites>FETCH-LOGICAL-c425t-1b91c20284297096e6161f8afd8bd16863c22ccc7b44ca8bc48ba1edeb56a3b73</cites><orcidid>0000-0003-4101-5113 ; 0000-0002-9010-0341 ; 0000-0002-9589-7054</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0720048X18303176$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/30396674$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Taguchi, Narumi</creatorcontrib><creatorcontrib>Oda, Seitaro</creatorcontrib><creatorcontrib>Imuta, Masanori</creatorcontrib><creatorcontrib>Yamamura, Sadahiro</creatorcontrib><creatorcontrib>Yokota, Yasuhiro</creatorcontrib><creatorcontrib>Nakaura, Takeshi</creatorcontrib><creatorcontrib>Nagayama, Yasunori</creatorcontrib><creatorcontrib>Kidoh, Masafumi</creatorcontrib><creatorcontrib>Utsunomiya, Daisuke</creatorcontrib><creatorcontrib>Funama, Yoshinori</creatorcontrib><creatorcontrib>Baba, Hideo</creatorcontrib><creatorcontrib>Yamashita, Yasuyuki</creatorcontrib><title>Dual-energy computed tomography colonography using dual-layer spectral detector computed tomography: Utility of virtual monochromatic imaging for electronic cleansing</title><title>European journal of radiology</title><addtitle>Eur J Radiol</addtitle><description>•Tagging density on VMI at low keV was significantly higher than that on 120 kVp.•VMI can improve the image quality and electronic cleansing performance.•Dual-layer spectral detector CT allows need-based retrospective tagging calibration.
To assess the utility of virtual monochromatic imaging (VMI) using a dual-layer spectral detector CT for electronic cleansing in fecal-tagging CT colonography (CTC).
This study included 35 patients who underwent fecal-tagging CTC with a dual-layer detector spectral CT scanner. Conventional images at 120 kVp and VMI at 40, 50, and 60 keV were reconstructed. Quantitative image quality parameters, i.e., tagging density and image noise, were compared and the visual image quality was scored on a four-point scale. We recorded the number of the colon segments with appropriate tagging density (≥300 HU) for each patient and used these data to compare the reconstructions. In addition, electronic cleansing performance was semi-quantitatively assessed using a four-point scale.
The mean tagging density on VMI was significantly higher than that on conventional 120 kVp images. The number of colon segments with appropriate tagging density on VMI were significantly higher than that on conventional 120 kVp images. There was no significant difference among the reconstructed images with respect to image noise. Scores for subjective image quality and electronic cleansing performance on VMI were significantly higher than those on conventional 120 kVp images.
With dual-layer spectral detector CT, VMI can yield significantly better fecal-tagged CTC image quality and improve electronic cleansing performance.</description><subject>Adult</subject><subject>Aged</subject><subject>Colon cancer</subject><subject>Colonic Neoplasms - diagnostic imaging</subject><subject>Colonography, Computed Tomographic - methods</subject><subject>CT colonography</subject><subject>Dual-energy CT</subject><subject>Dual-layer spectral detector CT</subject><subject>Electronic cleansing</subject><subject>Feces</subject><subject>Female</subject><subject>Humans</subject><subject>Image Processing, Computer-Assisted - methods</subject><subject>Male</subject><subject>Middle Aged</subject><subject>Tomography Scanners, X-Ray Computed</subject><subject>Tomography, X-Ray Computed - methods</subject><issn>0720-048X</issn><issn>1872-7727</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kcFu1DAQhi0EotvCEyAhH7kktZ2s7SBxQC0FpEpcqMTNcuzJ1isnTm2n0r5QnxOHbXuqOHk8-v9vNPMj9IGSmhLKz_c17KO2NSNU1qSrCaWv0IZKwSohmHiNNkQwUpFW_jlBpyntCSHbtmNv0UlDmo5z0W7Qw-WifQUTxN0BmzDOSwaLcxjDLur5du35MD19luSmHbarxesDRJxmMDlqjy3kUoX4EuMzvsnOu3zAYcD3Lubix2OhmtsYRp2dwW7UuxU9FAL4lRmm0jYe9LTOfIfeDNoneP_4nqGbq2-_L35U17--_7z4el2Zlm1zRfuOGkaYbFknSMeBU04HqQcre0u55I1hzBgj-rY1Wvamlb2mYKHfct30ojlDn47cOYa7BVJWo0sGvNcThCUpRsvpyLYRtEibo9TEkFKEQc2xrBEPihK1BqT26l9Aag1IkU6VgIrr4-OApR_BPnueEimCL0cBlDXvHUSVjIPJgHWx3EXZ4P474C9Hnaiw</recordid><startdate>201811</startdate><enddate>201811</enddate><creator>Taguchi, Narumi</creator><creator>Oda, Seitaro</creator><creator>Imuta, Masanori</creator><creator>Yamamura, Sadahiro</creator><creator>Yokota, Yasuhiro</creator><creator>Nakaura, Takeshi</creator><creator>Nagayama, Yasunori</creator><creator>Kidoh, Masafumi</creator><creator>Utsunomiya, Daisuke</creator><creator>Funama, Yoshinori</creator><creator>Baba, Hideo</creator><creator>Yamashita, Yasuyuki</creator><general>Elsevier B.V</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0003-4101-5113</orcidid><orcidid>https://orcid.org/0000-0002-9010-0341</orcidid><orcidid>https://orcid.org/0000-0002-9589-7054</orcidid></search><sort><creationdate>201811</creationdate><title>Dual-energy computed tomography colonography using dual-layer spectral detector computed tomography: Utility of virtual monochromatic imaging for electronic cleansing</title><author>Taguchi, Narumi ; Oda, Seitaro ; Imuta, Masanori ; Yamamura, Sadahiro ; Yokota, Yasuhiro ; Nakaura, Takeshi ; Nagayama, Yasunori ; Kidoh, Masafumi ; Utsunomiya, Daisuke ; Funama, Yoshinori ; Baba, Hideo ; Yamashita, Yasuyuki</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c425t-1b91c20284297096e6161f8afd8bd16863c22ccc7b44ca8bc48ba1edeb56a3b73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Adult</topic><topic>Aged</topic><topic>Colon cancer</topic><topic>Colonic Neoplasms - diagnostic imaging</topic><topic>Colonography, Computed Tomographic - methods</topic><topic>CT colonography</topic><topic>Dual-energy CT</topic><topic>Dual-layer spectral detector CT</topic><topic>Electronic cleansing</topic><topic>Feces</topic><topic>Female</topic><topic>Humans</topic><topic>Image Processing, Computer-Assisted - methods</topic><topic>Male</topic><topic>Middle Aged</topic><topic>Tomography Scanners, X-Ray Computed</topic><topic>Tomography, X-Ray Computed - methods</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Taguchi, Narumi</creatorcontrib><creatorcontrib>Oda, Seitaro</creatorcontrib><creatorcontrib>Imuta, Masanori</creatorcontrib><creatorcontrib>Yamamura, Sadahiro</creatorcontrib><creatorcontrib>Yokota, Yasuhiro</creatorcontrib><creatorcontrib>Nakaura, Takeshi</creatorcontrib><creatorcontrib>Nagayama, Yasunori</creatorcontrib><creatorcontrib>Kidoh, Masafumi</creatorcontrib><creatorcontrib>Utsunomiya, Daisuke</creatorcontrib><creatorcontrib>Funama, Yoshinori</creatorcontrib><creatorcontrib>Baba, Hideo</creatorcontrib><creatorcontrib>Yamashita, Yasuyuki</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>European journal of radiology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Taguchi, Narumi</au><au>Oda, Seitaro</au><au>Imuta, Masanori</au><au>Yamamura, Sadahiro</au><au>Yokota, Yasuhiro</au><au>Nakaura, Takeshi</au><au>Nagayama, Yasunori</au><au>Kidoh, Masafumi</au><au>Utsunomiya, Daisuke</au><au>Funama, Yoshinori</au><au>Baba, Hideo</au><au>Yamashita, Yasuyuki</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Dual-energy computed tomography colonography using dual-layer spectral detector computed tomography: Utility of virtual monochromatic imaging for electronic cleansing</atitle><jtitle>European journal of radiology</jtitle><addtitle>Eur J Radiol</addtitle><date>2018-11</date><risdate>2018</risdate><volume>108</volume><spage>7</spage><epage>12</epage><pages>7-12</pages><issn>0720-048X</issn><eissn>1872-7727</eissn><abstract>•Tagging density on VMI at low keV was significantly higher than that on 120 kVp.•VMI can improve the image quality and electronic cleansing performance.•Dual-layer spectral detector CT allows need-based retrospective tagging calibration.
To assess the utility of virtual monochromatic imaging (VMI) using a dual-layer spectral detector CT for electronic cleansing in fecal-tagging CT colonography (CTC).
This study included 35 patients who underwent fecal-tagging CTC with a dual-layer detector spectral CT scanner. Conventional images at 120 kVp and VMI at 40, 50, and 60 keV were reconstructed. Quantitative image quality parameters, i.e., tagging density and image noise, were compared and the visual image quality was scored on a four-point scale. We recorded the number of the colon segments with appropriate tagging density (≥300 HU) for each patient and used these data to compare the reconstructions. In addition, electronic cleansing performance was semi-quantitatively assessed using a four-point scale.
The mean tagging density on VMI was significantly higher than that on conventional 120 kVp images. The number of colon segments with appropriate tagging density on VMI were significantly higher than that on conventional 120 kVp images. There was no significant difference among the reconstructed images with respect to image noise. Scores for subjective image quality and electronic cleansing performance on VMI were significantly higher than those on conventional 120 kVp images.
With dual-layer spectral detector CT, VMI can yield significantly better fecal-tagged CTC image quality and improve electronic cleansing performance.</abstract><cop>Ireland</cop><pub>Elsevier B.V</pub><pmid>30396674</pmid><doi>10.1016/j.ejrad.2018.09.011</doi><tpages>6</tpages><orcidid>https://orcid.org/0000-0003-4101-5113</orcidid><orcidid>https://orcid.org/0000-0002-9010-0341</orcidid><orcidid>https://orcid.org/0000-0002-9589-7054</orcidid></addata></record> |
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| ispartof | European journal of radiology, 2018-11, Vol.108, p.7-12 |
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| source | MEDLINE; Elsevier ScienceDirect Journals |
| subjects | Adult Aged Colon cancer Colonic Neoplasms - diagnostic imaging Colonography, Computed Tomographic - methods CT colonography Dual-energy CT Dual-layer spectral detector CT Electronic cleansing Feces Female Humans Image Processing, Computer-Assisted - methods Male Middle Aged Tomography Scanners, X-Ray Computed Tomography, X-Ray Computed - methods |
| title | Dual-energy computed tomography colonography using dual-layer spectral detector computed tomography: Utility of virtual monochromatic imaging for electronic cleansing |
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