Comparison and Combination of Dual-Energy- and Iterative-Based Metal Artefact Reduction on Hip Prosthesis and Dental Implants
To compare and combine dual-energy based and iterative metal artefact reduction on hip prosthesis and dental implants in CT. A total of 46 patients (women:50%,mean age:63±15years) with dental implants or hip prostheses (n = 30/20) were included and examined with a second-generation Dual Source Scann...
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| creator | Bongers, Malte N Schabel, Christoph Thomas, Christoph Raupach, Rainer Notohamiprodjo, Mike Nikolaou, Konstantin Bamberg, Fabian |
| description | To compare and combine dual-energy based and iterative metal artefact reduction on hip prosthesis and dental implants in CT.
A total of 46 patients (women:50%,mean age:63±15years) with dental implants or hip prostheses (n = 30/20) were included and examined with a second-generation Dual Source Scanner. 120kV equivalent mixed-images were derived from reconstructions of the 100/Sn140kV source images using no metal artefact reduction (NOMAR) and iterative metal artefact reduction (IMAR). We then generated monoenergetic extrapolations at 130keV from source images without IMAR (DEMAR) or from source images with IMAR, (IMAR+DEMAR). The degree of metal artefact was quantified for NOMAR, IMAR, DEMAR and IMAR+DEMAR using a Fourier-based method and subjectively rated on a five point Likert scale by two independent readers.
In subjects with hip prosthesis, DEMAR and IMAR resulted in significantly reduced artefacts compared to standard reconstructions (33% vs. 56%; for DEMAR and IMAR; respectively, p |
| doi_str_mv | 10.1371/journal.pone.0143584 |
| format | Article |
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A total of 46 patients (women:50%,mean age:63±15years) with dental implants or hip prostheses (n = 30/20) were included and examined with a second-generation Dual Source Scanner. 120kV equivalent mixed-images were derived from reconstructions of the 100/Sn140kV source images using no metal artefact reduction (NOMAR) and iterative metal artefact reduction (IMAR). We then generated monoenergetic extrapolations at 130keV from source images without IMAR (DEMAR) or from source images with IMAR, (IMAR+DEMAR). The degree of metal artefact was quantified for NOMAR, IMAR, DEMAR and IMAR+DEMAR using a Fourier-based method and subjectively rated on a five point Likert scale by two independent readers.
In subjects with hip prosthesis, DEMAR and IMAR resulted in significantly reduced artefacts compared to standard reconstructions (33% vs. 56%; for DEMAR and IMAR; respectively, p<0.005), but the degree of artefact reduction was significantly higher for IMAR (all p<0.005). In contrast, in subjects with dental implants only IMAR showed a significant reduction of artefacts whereas DEMAR did not (71%, vs. 8% p<0.01 and p = 0.1; respectively). Furthermore, the combination of IMAR with DEMAR resulted in additionally reduced artefacts (Hip prosthesis: 47%, dental implants 18%; both p<0.0001).
IMAR allows for significantly higher reduction of metal artefacts caused by hip prostheses and dental implants, compared to a dual energy based method. The combination of DE-source images with IMAR and subsequent monoenergetic extrapolation provides an incremental benefit compared to both single methods.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0143584</identifier><identifier>PMID: 26600188</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Adult ; Aged ; Aged, 80 and over ; Algorithms ; Analysis ; Artefacts ; Dental Implants ; Dental materials ; Dental prosthetics ; Dental restorative materials ; Energy ; Female ; Hip ; Hip Prosthesis ; Humans ; Male ; Medical imaging ; Metals ; Metals (Materials) ; Middle Aged ; Noise ; Patients ; Prostheses ; Prostheses and implants ; Prosthetics ; Quality management ; Reduction (metal working) ; Surgical implants ; Tomography, X-Ray Computed</subject><ispartof>PloS one, 2015-11, Vol.10 (11), p.e0143584-e0143584</ispartof><rights>COPYRIGHT 2015 Public Library of Science</rights><rights>2015 Bongers 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>2015 Bongers et al 2015 Bongers et al</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c692t-f1bdf64b9a64febfef8cd95a407d3b4cbcfb73b6e1ee05962223c58daf23f3f63</citedby><cites>FETCH-LOGICAL-c692t-f1bdf64b9a64febfef8cd95a407d3b4cbcfb73b6e1ee05962223c58daf23f3f63</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4658024/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4658024/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,723,776,780,860,881,2095,2914,23846,27903,27904,53769,53771,79346,79347</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/26600188$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><contributor>Zeng, Li</contributor><creatorcontrib>Bongers, Malte N</creatorcontrib><creatorcontrib>Schabel, Christoph</creatorcontrib><creatorcontrib>Thomas, Christoph</creatorcontrib><creatorcontrib>Raupach, Rainer</creatorcontrib><creatorcontrib>Notohamiprodjo, Mike</creatorcontrib><creatorcontrib>Nikolaou, Konstantin</creatorcontrib><creatorcontrib>Bamberg, Fabian</creatorcontrib><title>Comparison and Combination of Dual-Energy- and Iterative-Based Metal Artefact Reduction on Hip Prosthesis and Dental Implants</title><title>PloS one</title><addtitle>PLoS One</addtitle><description>To compare and combine dual-energy based and iterative metal artefact reduction on hip prosthesis and dental implants in CT.
A total of 46 patients (women:50%,mean age:63±15years) with dental implants or hip prostheses (n = 30/20) were included and examined with a second-generation Dual Source Scanner. 120kV equivalent mixed-images were derived from reconstructions of the 100/Sn140kV source images using no metal artefact reduction (NOMAR) and iterative metal artefact reduction (IMAR). We then generated monoenergetic extrapolations at 130keV from source images without IMAR (DEMAR) or from source images with IMAR, (IMAR+DEMAR). The degree of metal artefact was quantified for NOMAR, IMAR, DEMAR and IMAR+DEMAR using a Fourier-based method and subjectively rated on a five point Likert scale by two independent readers.
In subjects with hip prosthesis, DEMAR and IMAR resulted in significantly reduced artefacts compared to standard reconstructions (33% vs. 56%; for DEMAR and IMAR; respectively, p<0.005), but the degree of artefact reduction was significantly higher for IMAR (all p<0.005). In contrast, in subjects with dental implants only IMAR showed a significant reduction of artefacts whereas DEMAR did not (71%, vs. 8% p<0.01 and p = 0.1; respectively). Furthermore, the combination of IMAR with DEMAR resulted in additionally reduced artefacts (Hip prosthesis: 47%, dental implants 18%; both p<0.0001).
IMAR allows for significantly higher reduction of metal artefacts caused by hip prostheses and dental implants, compared to a dual energy based method. The combination of DE-source images with IMAR and subsequent monoenergetic extrapolation provides an incremental benefit compared to both single methods.</description><subject>Adult</subject><subject>Aged</subject><subject>Aged, 80 and over</subject><subject>Algorithms</subject><subject>Analysis</subject><subject>Artefacts</subject><subject>Dental Implants</subject><subject>Dental materials</subject><subject>Dental prosthetics</subject><subject>Dental restorative materials</subject><subject>Energy</subject><subject>Female</subject><subject>Hip</subject><subject>Hip Prosthesis</subject><subject>Humans</subject><subject>Male</subject><subject>Medical imaging</subject><subject>Metals</subject><subject>Metals (Materials)</subject><subject>Middle Aged</subject><subject>Noise</subject><subject>Patients</subject><subject>Prostheses</subject><subject>Prostheses and implants</subject><subject>Prosthetics</subject><subject>Quality management</subject><subject>Reduction (metal working)</subject><subject>Surgical implants</subject><subject>Tomography, X-Ray 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and Combination of Dual-Energy- and Iterative-Based Metal Artefact Reduction on Hip Prosthesis and Dental Implants</title><author>Bongers, Malte N ; Schabel, Christoph ; Thomas, Christoph ; Raupach, Rainer ; Notohamiprodjo, Mike ; Nikolaou, Konstantin ; Bamberg, Fabian</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c692t-f1bdf64b9a64febfef8cd95a407d3b4cbcfb73b6e1ee05962223c58daf23f3f63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Adult</topic><topic>Aged</topic><topic>Aged, 80 and over</topic><topic>Algorithms</topic><topic>Analysis</topic><topic>Artefacts</topic><topic>Dental Implants</topic><topic>Dental materials</topic><topic>Dental prosthetics</topic><topic>Dental restorative materials</topic><topic>Energy</topic><topic>Female</topic><topic>Hip</topic><topic>Hip Prosthesis</topic><topic>Humans</topic><topic>Male</topic><topic>Medical imaging</topic><topic>Metals</topic><topic>Metals (Materials)</topic><topic>Middle Aged</topic><topic>Noise</topic><topic>Patients</topic><topic>Prostheses</topic><topic>Prostheses and implants</topic><topic>Prosthetics</topic><topic>Quality management</topic><topic>Reduction (metal working)</topic><topic>Surgical implants</topic><topic>Tomography, X-Ray Computed</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bongers, Malte N</creatorcontrib><creatorcontrib>Schabel, Christoph</creatorcontrib><creatorcontrib>Thomas, Christoph</creatorcontrib><creatorcontrib>Raupach, Rainer</creatorcontrib><creatorcontrib>Notohamiprodjo, Mike</creatorcontrib><creatorcontrib>Nikolaou, Konstantin</creatorcontrib><creatorcontrib>Bamberg, Fabian</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE 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Combination of Dual-Energy- and Iterative-Based Metal Artefact Reduction on Hip Prosthesis and Dental Implants</atitle><jtitle>PloS one</jtitle><addtitle>PLoS One</addtitle><date>2015-11-24</date><risdate>2015</risdate><volume>10</volume><issue>11</issue><spage>e0143584</spage><epage>e0143584</epage><pages>e0143584-e0143584</pages><issn>1932-6203</issn><eissn>1932-6203</eissn><abstract>To compare and combine dual-energy based and iterative metal artefact reduction on hip prosthesis and dental implants in CT.
A total of 46 patients (women:50%,mean age:63±15years) with dental implants or hip prostheses (n = 30/20) were included and examined with a second-generation Dual Source Scanner. 120kV equivalent mixed-images were derived from reconstructions of the 100/Sn140kV source images using no metal artefact reduction (NOMAR) and iterative metal artefact reduction (IMAR). We then generated monoenergetic extrapolations at 130keV from source images without IMAR (DEMAR) or from source images with IMAR, (IMAR+DEMAR). The degree of metal artefact was quantified for NOMAR, IMAR, DEMAR and IMAR+DEMAR using a Fourier-based method and subjectively rated on a five point Likert scale by two independent readers.
In subjects with hip prosthesis, DEMAR and IMAR resulted in significantly reduced artefacts compared to standard reconstructions (33% vs. 56%; for DEMAR and IMAR; respectively, p<0.005), but the degree of artefact reduction was significantly higher for IMAR (all p<0.005). In contrast, in subjects with dental implants only IMAR showed a significant reduction of artefacts whereas DEMAR did not (71%, vs. 8% p<0.01 and p = 0.1; respectively). Furthermore, the combination of IMAR with DEMAR resulted in additionally reduced artefacts (Hip prosthesis: 47%, dental implants 18%; both p<0.0001).
IMAR allows for significantly higher reduction of metal artefacts caused by hip prostheses and dental implants, compared to a dual energy based method. The combination of DE-source images with IMAR and subsequent monoenergetic extrapolation provides an incremental benefit compared to both single methods.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>26600188</pmid><doi>10.1371/journal.pone.0143584</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Adult Aged Aged, 80 and over Algorithms Analysis Artefacts Dental Implants Dental materials Dental prosthetics Dental restorative materials Energy Female Hip Hip Prosthesis Humans Male Medical imaging Metals Metals (Materials) Middle Aged Noise Patients Prostheses Prostheses and implants Prosthetics Quality management Reduction (metal working) Surgical implants Tomography, X-Ray Computed |
| title | Comparison and Combination of Dual-Energy- and Iterative-Based Metal Artefact Reduction on Hip Prosthesis and Dental Implants |
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