Grading lumbar disc degeneration: a comparison between low- and high-field MRI
Background More advanced disc degeneration on magnetic resonance imaging (MRI) is found in individuals with low back pain. However, it is unclear whether this grading is independent of the scanner’s field strength. Purpose To compare disc degeneration on high- versus low-field MRI. Material and Meth...
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| Veröffentlicht in: | Acta radiologica (1987) 2019-12, Vol.60 (12), p.1636-1642 |
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| container_title | Acta radiologica (1987) |
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| creator | Hansen, Bjarke B Ciochon, Urszula M Trampedach, Charlotte R Christensen, Anders F Rasti, Zoreh Boesen, Mikael |
| description | Background
More advanced disc degeneration on magnetic resonance imaging (MRI) is found in individuals with low back pain. However, it is unclear whether this grading is independent of the scanner’s field strength.
Purpose
To compare disc degeneration on high- versus low-field MRI.
Material and Methods
Low back pain patients were enrolled to undergo high-field (3 T) MRI, followed by low-field (0.25 T) MRI of the lumbar spine within 3 h. Three radiologists graded the disc degeneration on Pfirrmann’s grading scale with a hiatus of 3 months. A subsample was regraded 6 months later. Reproducibility was measured by weighted kappa statistics (using PROC FREQ statement with AGREE in the TABLES statement for SAS), absolute agreement (i.e. 1:1 agreement/the total number) and the difference in the prevalence (McNemar test).
Results
Moderate to substantial agreement (κ = 0.52–0.62) and absolute agreement of 43.8–66.1% were found between field strengths. Low-field MRI tended to have numerically higher and lower grades than high-field MRI resulting in a significant difference in the prevalence of grades (p |
| doi_str_mv | 10.1177/0284185119842472 |
| format | Article |
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More advanced disc degeneration on magnetic resonance imaging (MRI) is found in individuals with low back pain. However, it is unclear whether this grading is independent of the scanner’s field strength.
Purpose
To compare disc degeneration on high- versus low-field MRI.
Material and Methods
Low back pain patients were enrolled to undergo high-field (3 T) MRI, followed by low-field (0.25 T) MRI of the lumbar spine within 3 h. Three radiologists graded the disc degeneration on Pfirrmann’s grading scale with a hiatus of 3 months. A subsample was regraded 6 months later. Reproducibility was measured by weighted kappa statistics (using PROC FREQ statement with AGREE in the TABLES statement for SAS), absolute agreement (i.e. 1:1 agreement/the total number) and the difference in the prevalence (McNemar test).
Results
Moderate to substantial agreement (κ = 0.52–0.62) and absolute agreement of 43.8–66.1% were found between field strengths. Low-field MRI tended to have numerically higher and lower grades than high-field MRI resulting in a significant difference in the prevalence of grades (p < 0.001). Both field strengths resulted in a moderate to substantial inter-reader agreement (low-field: κ = 0.63, 0.63, 0.54 and high-field: κ = 0.55, 0.43, 0.53) and intra-reader agreement (high-field: κ = 0.57, 0.77, 0.67 and low-field: κ = 0.51, 0.50, 0.70). Only, the reader with the shortest experience had better agreement with high-field compared to low-field.
Conclusions
There were a significant difference in the prevalence of disc degeneration grading between 0.25 T and 3 T MRI. Therefore, field strength should be taken into consideration when comparing studies using disc degeneration grading as an outcome.</description><identifier>ISSN: 0284-1851</identifier><identifier>EISSN: 1600-0455</identifier><identifier>DOI: 10.1177/0284185119842472</identifier><identifier>PMID: 31003590</identifier><language>eng</language><publisher>London, England: SAGE Publications</publisher><subject>Adolescent ; Adult ; Aged ; Female ; Humans ; Intervertebral Disc Degeneration - diagnostic imaging ; Lumbar Vertebrae - diagnostic imaging ; Magnetic Resonance Imaging - methods ; Male ; Middle Aged ; Young Adult</subject><ispartof>Acta radiologica (1987), 2019-12, Vol.60 (12), p.1636-1642</ispartof><rights>The Foundation Acta Radiologica 2019</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c337t-4cfd02fd22fe11999cff2932b22a1e05698b4802dec187d10f2a83a6a67c8bdd3</citedby><cites>FETCH-LOGICAL-c337t-4cfd02fd22fe11999cff2932b22a1e05698b4802dec187d10f2a83a6a67c8bdd3</cites><orcidid>0000-0002-4440-1960 ; 0000-0001-8692-1801</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://journals.sagepub.com/doi/pdf/10.1177/0284185119842472$$EPDF$$P50$$Gsage$$H</linktopdf><linktohtml>$$Uhttps://journals.sagepub.com/doi/10.1177/0284185119842472$$EHTML$$P50$$Gsage$$H</linktohtml><link.rule.ids>314,780,784,21818,27923,27924,43620,43621</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/31003590$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Hansen, Bjarke B</creatorcontrib><creatorcontrib>Ciochon, Urszula M</creatorcontrib><creatorcontrib>Trampedach, Charlotte R</creatorcontrib><creatorcontrib>Christensen, Anders F</creatorcontrib><creatorcontrib>Rasti, Zoreh</creatorcontrib><creatorcontrib>Boesen, Mikael</creatorcontrib><title>Grading lumbar disc degeneration: a comparison between low- and high-field MRI</title><title>Acta radiologica (1987)</title><addtitle>Acta Radiol</addtitle><description>Background
More advanced disc degeneration on magnetic resonance imaging (MRI) is found in individuals with low back pain. However, it is unclear whether this grading is independent of the scanner’s field strength.
Purpose
To compare disc degeneration on high- versus low-field MRI.
Material and Methods
Low back pain patients were enrolled to undergo high-field (3 T) MRI, followed by low-field (0.25 T) MRI of the lumbar spine within 3 h. Three radiologists graded the disc degeneration on Pfirrmann’s grading scale with a hiatus of 3 months. A subsample was regraded 6 months later. Reproducibility was measured by weighted kappa statistics (using PROC FREQ statement with AGREE in the TABLES statement for SAS), absolute agreement (i.e. 1:1 agreement/the total number) and the difference in the prevalence (McNemar test).
Results
Moderate to substantial agreement (κ = 0.52–0.62) and absolute agreement of 43.8–66.1% were found between field strengths. Low-field MRI tended to have numerically higher and lower grades than high-field MRI resulting in a significant difference in the prevalence of grades (p < 0.001). Both field strengths resulted in a moderate to substantial inter-reader agreement (low-field: κ = 0.63, 0.63, 0.54 and high-field: κ = 0.55, 0.43, 0.53) and intra-reader agreement (high-field: κ = 0.57, 0.77, 0.67 and low-field: κ = 0.51, 0.50, 0.70). Only, the reader with the shortest experience had better agreement with high-field compared to low-field.
Conclusions
There were a significant difference in the prevalence of disc degeneration grading between 0.25 T and 3 T MRI. Therefore, field strength should be taken into consideration when comparing studies using disc degeneration grading as an outcome.</description><subject>Adolescent</subject><subject>Adult</subject><subject>Aged</subject><subject>Female</subject><subject>Humans</subject><subject>Intervertebral Disc Degeneration - diagnostic imaging</subject><subject>Lumbar Vertebrae - diagnostic imaging</subject><subject>Magnetic Resonance Imaging - methods</subject><subject>Male</subject><subject>Middle Aged</subject><subject>Young Adult</subject><issn>0284-1851</issn><issn>1600-0455</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp1kDFPwzAUhC0EoqWwMyGPLAbbcRKHDVVQKhWQEMyRYz-3qRK72Ikq_j2pWhiQmN5w353uHUKXjN4wlue3lEvBZMpYIQUXOT9CY5ZRSqhI02M03slkp4_QWYxrShnPU3aKRgmjNEkLOkYvs6BM7Za46dtKBWzqqLGBJTgIqqu9u8MKa99uVKijd7iCbgvgcOO3BCtn8KperoitoTH4-W1-jk6saiJcHO4EfTw-vE-fyOJ1Np_eL4hOkrwjQltDuTWcWxjKF4W2lhcJrzhXDGiaFbISknIDmsncMGq5konKVJZrWRmTTND1PncT_GcPsSvboTg0jXLg-1hyPsSKTAo5oHSP6uBjDGDLTahbFb5KRsvdiuXfFQfL1SG9r1owv4af2QaA7IGollCufR_c8O3_gd_O33h8</recordid><startdate>201912</startdate><enddate>201912</enddate><creator>Hansen, Bjarke B</creator><creator>Ciochon, Urszula M</creator><creator>Trampedach, Charlotte R</creator><creator>Christensen, Anders F</creator><creator>Rasti, Zoreh</creator><creator>Boesen, Mikael</creator><general>SAGE Publications</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/0000-0002-4440-1960</orcidid><orcidid>https://orcid.org/0000-0001-8692-1801</orcidid></search><sort><creationdate>201912</creationdate><title>Grading lumbar disc degeneration: a comparison between low- and high-field MRI</title><author>Hansen, Bjarke B ; Ciochon, Urszula M ; Trampedach, Charlotte R ; Christensen, Anders F ; Rasti, Zoreh ; Boesen, Mikael</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c337t-4cfd02fd22fe11999cff2932b22a1e05698b4802dec187d10f2a83a6a67c8bdd3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Adolescent</topic><topic>Adult</topic><topic>Aged</topic><topic>Female</topic><topic>Humans</topic><topic>Intervertebral Disc Degeneration - diagnostic imaging</topic><topic>Lumbar Vertebrae - diagnostic imaging</topic><topic>Magnetic Resonance Imaging - methods</topic><topic>Male</topic><topic>Middle Aged</topic><topic>Young Adult</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hansen, Bjarke B</creatorcontrib><creatorcontrib>Ciochon, Urszula M</creatorcontrib><creatorcontrib>Trampedach, Charlotte R</creatorcontrib><creatorcontrib>Christensen, Anders F</creatorcontrib><creatorcontrib>Rasti, Zoreh</creatorcontrib><creatorcontrib>Boesen, Mikael</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>Acta radiologica (1987)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hansen, Bjarke B</au><au>Ciochon, Urszula M</au><au>Trampedach, Charlotte R</au><au>Christensen, Anders F</au><au>Rasti, Zoreh</au><au>Boesen, Mikael</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Grading lumbar disc degeneration: a comparison between low- and high-field MRI</atitle><jtitle>Acta radiologica (1987)</jtitle><addtitle>Acta Radiol</addtitle><date>2019-12</date><risdate>2019</risdate><volume>60</volume><issue>12</issue><spage>1636</spage><epage>1642</epage><pages>1636-1642</pages><issn>0284-1851</issn><eissn>1600-0455</eissn><abstract>Background
More advanced disc degeneration on magnetic resonance imaging (MRI) is found in individuals with low back pain. However, it is unclear whether this grading is independent of the scanner’s field strength.
Purpose
To compare disc degeneration on high- versus low-field MRI.
Material and Methods
Low back pain patients were enrolled to undergo high-field (3 T) MRI, followed by low-field (0.25 T) MRI of the lumbar spine within 3 h. Three radiologists graded the disc degeneration on Pfirrmann’s grading scale with a hiatus of 3 months. A subsample was regraded 6 months later. Reproducibility was measured by weighted kappa statistics (using PROC FREQ statement with AGREE in the TABLES statement for SAS), absolute agreement (i.e. 1:1 agreement/the total number) and the difference in the prevalence (McNemar test).
Results
Moderate to substantial agreement (κ = 0.52–0.62) and absolute agreement of 43.8–66.1% were found between field strengths. Low-field MRI tended to have numerically higher and lower grades than high-field MRI resulting in a significant difference in the prevalence of grades (p < 0.001). Both field strengths resulted in a moderate to substantial inter-reader agreement (low-field: κ = 0.63, 0.63, 0.54 and high-field: κ = 0.55, 0.43, 0.53) and intra-reader agreement (high-field: κ = 0.57, 0.77, 0.67 and low-field: κ = 0.51, 0.50, 0.70). Only, the reader with the shortest experience had better agreement with high-field compared to low-field.
Conclusions
There were a significant difference in the prevalence of disc degeneration grading between 0.25 T and 3 T MRI. Therefore, field strength should be taken into consideration when comparing studies using disc degeneration grading as an outcome.</abstract><cop>London, England</cop><pub>SAGE Publications</pub><pmid>31003590</pmid><doi>10.1177/0284185119842472</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0002-4440-1960</orcidid><orcidid>https://orcid.org/0000-0001-8692-1801</orcidid></addata></record> |
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| ispartof | Acta radiologica (1987), 2019-12, Vol.60 (12), p.1636-1642 |
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| language | eng |
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| source | MEDLINE; SAGE Complete A-Z List |
| subjects | Adolescent Adult Aged Female Humans Intervertebral Disc Degeneration - diagnostic imaging Lumbar Vertebrae - diagnostic imaging Magnetic Resonance Imaging - methods Male Middle Aged Young Adult |
| title | Grading lumbar disc degeneration: a comparison between low- and high-field MRI |
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