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Spectral Imaging for Intracranial Stents and Stent Lumen
Application of computed tomography for monitoring intracranial stents is limited because of stent-related artifacts. Our purpose was to evaluate the effect of gemstone spectral imaging on the intracranial stent and stent lumen. In vitro, we scanned Enterprise stent phantom and a stent-cheese complex...
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Published in: | PloS one 2016-01, Vol.11 (1), p.e0145999-e0145999 |
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description | Application of computed tomography for monitoring intracranial stents is limited because of stent-related artifacts. Our purpose was to evaluate the effect of gemstone spectral imaging on the intracranial stent and stent lumen.
In vitro, we scanned Enterprise stent phantom and a stent-cheese complex using the gemstone spectral imaging protocol. Follow-up gemstone spectral images of 15 consecutive patients with placement of Enterprise from January 2013 to September 2014 were also retrospectively reviewed. We used 70-keV, 140-keV, iodine (water), iodine (calcium), and iodine (hydroxyapatite) images to evaluate their effect on the intracranial stent and stent lumen. Two regions of interest were individually placed in stent lumen and adjacent brain tissue. Contrast-to-noise ratio was measured to determine image quality. The maximal diameter of stent markers was also measured to evaluate stent-related artifact. Two radiologists independently graded the visibility of the lumen at the maker location by using a 4-point scale. The mean of grading score, contrast/noise ratio and maximal diameter of stent markers were compared among all modes. All results were analyzed by SPSS version 20.
In vitro, iodine (water) images decreased metallic artifact of stent makers to the greatest degree. The most areas of cheese were observed on iodine (water) images. In vivo, iodine (water) images had the smallest average diameter of stent markers (0.33 ± 0.17mm; P < .05) and showed the highest mean grading score (2.94 ± 0.94; P < .05) and contrast/noise ratio of in-stent lumen (160.03 ±37.79; P < .05) among all the modes.
Iodine (water) images can help reduce stent-related artifacts of Enterprise and enhance contrast of in-stent lumen. Spectral imaging may be considered a noninvasive modality for following-up patients with in-stent stenosis. |
doi_str_mv | 10.1371/journal.pone.0145999 |
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In vitro, we scanned Enterprise stent phantom and a stent-cheese complex using the gemstone spectral imaging protocol. Follow-up gemstone spectral images of 15 consecutive patients with placement of Enterprise from January 2013 to September 2014 were also retrospectively reviewed. We used 70-keV, 140-keV, iodine (water), iodine (calcium), and iodine (hydroxyapatite) images to evaluate their effect on the intracranial stent and stent lumen. Two regions of interest were individually placed in stent lumen and adjacent brain tissue. Contrast-to-noise ratio was measured to determine image quality. The maximal diameter of stent markers was also measured to evaluate stent-related artifact. Two radiologists independently graded the visibility of the lumen at the maker location by using a 4-point scale. The mean of grading score, contrast/noise ratio and maximal diameter of stent markers were compared among all modes. All results were analyzed by SPSS version 20.
In vitro, iodine (water) images decreased metallic artifact of stent makers to the greatest degree. The most areas of cheese were observed on iodine (water) images. In vivo, iodine (water) images had the smallest average diameter of stent markers (0.33 ± 0.17mm; P < .05) and showed the highest mean grading score (2.94 ± 0.94; P < .05) and contrast/noise ratio of in-stent lumen (160.03 ±37.79; P < .05) among all the modes.
Iodine (water) images can help reduce stent-related artifacts of Enterprise and enhance contrast of in-stent lumen. Spectral imaging may be considered a noninvasive modality for following-up patients with in-stent stenosis.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0145999</identifier><identifier>PMID: 26731534</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Aged ; Aneurysms ; Angioplasty ; Atherosclerosis ; Brain ; Brain - blood supply ; Calcium ; Care and treatment ; Cerebrovascular disorders ; Cheese ; Computed tomography ; Contrast Media - analysis ; Coronary Angiography - methods ; Dairy products ; Energy ; Evaluation ; Female ; Grading ; Hospitals ; Humans ; Hydroxyapatite ; Hydroxyapatites ; Image contrast ; Image enhancement ; Image quality ; Implants ; In vitro methods and tests ; Iodine ; Iodine - analysis ; Male ; Markers ; Medical imaging ; Medicine ; Middle Aged ; Neuroimaging ; Noise ; Patients ; Review boards ; Risk factors ; Spectra ; Spectroscopy ; Stenosis ; Stents ; Stroke ; Surgical implants ; Tomography, X-Ray Computed - methods</subject><ispartof>PloS one, 2016-01, Vol.11 (1), p.e0145999-e0145999</ispartof><rights>COPYRIGHT 2016 Public Library of Science</rights><rights>2016 Weng et al. This is an open access article distributed under the terms of the Creative Commons Attribution License: http://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>2016 Weng et al 2016 Weng et al</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c692t-dc92631e351e3c287cb9cff033beab7b394dab2f2ceac8bf876f811d9b3046003</citedby><cites>FETCH-LOGICAL-c692t-dc92631e351e3c287cb9cff033beab7b394dab2f2ceac8bf876f811d9b3046003</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.proquest.com/docview/1753446510/fulltextPDF?pq-origsite=primo$$EPDF$$P50$$Gproquest$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.proquest.com/docview/1753446510?pq-origsite=primo$$EHTML$$P50$$Gproquest$$Hfree_for_read</linktohtml><link.rule.ids>230,314,727,780,784,885,25753,27924,27925,37012,37013,44590,53791,53793,75126</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/26731534$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><contributor>Morishita, Ryuichi</contributor><creatorcontrib>Weng, Chi-Lun</creatorcontrib><creatorcontrib>Tseng, Ying-Chi</creatorcontrib><creatorcontrib>Chen, David Yen-Ting</creatorcontrib><creatorcontrib>Chen, Chi-Jen</creatorcontrib><creatorcontrib>Hsu, Hui-Ling</creatorcontrib><title>Spectral Imaging for Intracranial Stents and Stent Lumen</title><title>PloS one</title><addtitle>PLoS One</addtitle><description>Application of computed tomography for monitoring intracranial stents is limited because of stent-related artifacts. Our purpose was to evaluate the effect of gemstone spectral imaging on the intracranial stent and stent lumen.
In vitro, we scanned Enterprise stent phantom and a stent-cheese complex using the gemstone spectral imaging protocol. Follow-up gemstone spectral images of 15 consecutive patients with placement of Enterprise from January 2013 to September 2014 were also retrospectively reviewed. We used 70-keV, 140-keV, iodine (water), iodine (calcium), and iodine (hydroxyapatite) images to evaluate their effect on the intracranial stent and stent lumen. Two regions of interest were individually placed in stent lumen and adjacent brain tissue. Contrast-to-noise ratio was measured to determine image quality. The maximal diameter of stent markers was also measured to evaluate stent-related artifact. Two radiologists independently graded the visibility of the lumen at the maker location by using a 4-point scale. The mean of grading score, contrast/noise ratio and maximal diameter of stent markers were compared among all modes. All results were analyzed by SPSS version 20.
In vitro, iodine (water) images decreased metallic artifact of stent makers to the greatest degree. The most areas of cheese were observed on iodine (water) images. In vivo, iodine (water) images had the smallest average diameter of stent markers (0.33 ± 0.17mm; P < .05) and showed the highest mean grading score (2.94 ± 0.94; P < .05) and contrast/noise ratio of in-stent lumen (160.03 ±37.79; P < .05) among all the modes.
Iodine (water) images can help reduce stent-related artifacts of Enterprise and enhance contrast of in-stent lumen. Spectral imaging may be considered a noninvasive modality for following-up patients with in-stent stenosis.</description><subject>Aged</subject><subject>Aneurysms</subject><subject>Angioplasty</subject><subject>Atherosclerosis</subject><subject>Brain</subject><subject>Brain - blood supply</subject><subject>Calcium</subject><subject>Care and treatment</subject><subject>Cerebrovascular disorders</subject><subject>Cheese</subject><subject>Computed tomography</subject><subject>Contrast Media - analysis</subject><subject>Coronary Angiography - methods</subject><subject>Dairy products</subject><subject>Energy</subject><subject>Evaluation</subject><subject>Female</subject><subject>Grading</subject><subject>Hospitals</subject><subject>Humans</subject><subject>Hydroxyapatite</subject><subject>Hydroxyapatites</subject><subject>Image contrast</subject><subject>Image enhancement</subject><subject>Image quality</subject><subject>Implants</subject><subject>In vitro methods and tests</subject><subject>Iodine</subject><subject>Iodine - 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Academic</collection><collection>PubMed Central (Full Participant titles)</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>PloS one</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Weng, Chi-Lun</au><au>Tseng, Ying-Chi</au><au>Chen, David Yen-Ting</au><au>Chen, Chi-Jen</au><au>Hsu, Hui-Ling</au><au>Morishita, Ryuichi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Spectral Imaging for Intracranial Stents and Stent Lumen</atitle><jtitle>PloS one</jtitle><addtitle>PLoS One</addtitle><date>2016-01-05</date><risdate>2016</risdate><volume>11</volume><issue>1</issue><spage>e0145999</spage><epage>e0145999</epage><pages>e0145999-e0145999</pages><issn>1932-6203</issn><eissn>1932-6203</eissn><abstract>Application of computed tomography for monitoring intracranial stents is limited because of stent-related artifacts. Our purpose was to evaluate the effect of gemstone spectral imaging on the intracranial stent and stent lumen.
In vitro, we scanned Enterprise stent phantom and a stent-cheese complex using the gemstone spectral imaging protocol. Follow-up gemstone spectral images of 15 consecutive patients with placement of Enterprise from January 2013 to September 2014 were also retrospectively reviewed. We used 70-keV, 140-keV, iodine (water), iodine (calcium), and iodine (hydroxyapatite) images to evaluate their effect on the intracranial stent and stent lumen. Two regions of interest were individually placed in stent lumen and adjacent brain tissue. Contrast-to-noise ratio was measured to determine image quality. The maximal diameter of stent markers was also measured to evaluate stent-related artifact. Two radiologists independently graded the visibility of the lumen at the maker location by using a 4-point scale. The mean of grading score, contrast/noise ratio and maximal diameter of stent markers were compared among all modes. All results were analyzed by SPSS version 20.
In vitro, iodine (water) images decreased metallic artifact of stent makers to the greatest degree. The most areas of cheese were observed on iodine (water) images. In vivo, iodine (water) images had the smallest average diameter of stent markers (0.33 ± 0.17mm; P < .05) and showed the highest mean grading score (2.94 ± 0.94; P < .05) and contrast/noise ratio of in-stent lumen (160.03 ±37.79; P < .05) among all the modes.
Iodine (water) images can help reduce stent-related artifacts of Enterprise and enhance contrast of in-stent lumen. Spectral imaging may be considered a noninvasive modality for following-up patients with in-stent stenosis.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>26731534</pmid><doi>10.1371/journal.pone.0145999</doi><oa>free_for_read</oa></addata></record> |
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subjects | Aged Aneurysms Angioplasty Atherosclerosis Brain Brain - blood supply Calcium Care and treatment Cerebrovascular disorders Cheese Computed tomography Contrast Media - analysis Coronary Angiography - methods Dairy products Energy Evaluation Female Grading Hospitals Humans Hydroxyapatite Hydroxyapatites Image contrast Image enhancement Image quality Implants In vitro methods and tests Iodine Iodine - analysis Male Markers Medical imaging Medicine Middle Aged Neuroimaging Noise Patients Review boards Risk factors Spectra Spectroscopy Stenosis Stents Stroke Surgical implants Tomography, X-Ray Computed - methods |
title | Spectral Imaging for Intracranial Stents and Stent Lumen |
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