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Correlation between MRI Grading System and Surgical Findings for Lumbar Foraminal Stenosis
OBJECTIVE: Magnetic resonance imaging (MRI) grading systems using sagittal images are useful for evaluation of lumbar foraminal stenosis. We evaluated whether such a grading system is useful as a diagnostic tool for surgery. METHODS: Between July 2014 and June 2015, 99 consecutive patients underwent...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Korean Neurosurgical Society
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5544375/ https://www.ncbi.nlm.nih.gov/pubmed/28689396 http://dx.doi.org/10.3340/jkns.2016.1010.004 |
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author | Jeong, Tae Seok Ahn, Yong Lee, Sang Gu Kim, Woo Kyung Son, Seong Kwon, Jung Hwa |
author_facet | Jeong, Tae Seok Ahn, Yong Lee, Sang Gu Kim, Woo Kyung Son, Seong Kwon, Jung Hwa |
author_sort | Jeong, Tae Seok |
collection | PubMed |
description | OBJECTIVE: Magnetic resonance imaging (MRI) grading systems using sagittal images are useful for evaluation of lumbar foraminal stenosis. We evaluated whether such a grading system is useful as a diagnostic tool for surgery. METHODS: Between July 2014 and June 2015, 99 consecutive patients underwent unilateral lumbar foraminotomy for lumbar foraminal stenosis. Surgically confirmed foraminal stenosis and the contralateral, asymptomatic neuroforamen were assessed based on a 4-point MRI grading system. Two experienced researchers independently evaluated the MR sagittal images. Interobserver agreement and intraobserver agreement were analyzed using κ statistics. RESULTS: The mean age of patients (54 women, 45 men) was 62.5 years. A total of 101 levels (202 neuroforamens) were evaluated. MRI grades for operated neuroforamens were as follows: Grade 0 in 0.99%, Grade 1 in 5.28%, Grade 2 in 14.85%, and Grade 3 in 78.88%. Interobserver agreement was moderate for operated neuroforamens (κ=0.511) and good for asymptomatic neuroforamens (κ=0.696). Intraobserver agreement by reader 1 for operated neuroforamens was good (κ=0.776) and that for asymptomatic neuroforamens was very good (κ=0.831). In terms of lumbar level, interobserver agreement for L5–S1 (κ=0.313, fair) was relatively lower than the other level (κ=0.804, very good). CONCLUSION: MRI grading system for lumbar foraminal stenosis is thought to be useful as a diagnostic tool for surgery in the lumbar spine; however, it is less reliable for symptomatic L5–S1 foraminal stenosis than for other levels. Thus, various clinical factors as well as the MRI grading system are required for surgical decision-making. |
format | Online Article Text |
id | pubmed-5544375 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Korean Neurosurgical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-55443752017-08-09 Correlation between MRI Grading System and Surgical Findings for Lumbar Foraminal Stenosis Jeong, Tae Seok Ahn, Yong Lee, Sang Gu Kim, Woo Kyung Son, Seong Kwon, Jung Hwa J Korean Neurosurg Soc Clinical Article OBJECTIVE: Magnetic resonance imaging (MRI) grading systems using sagittal images are useful for evaluation of lumbar foraminal stenosis. We evaluated whether such a grading system is useful as a diagnostic tool for surgery. METHODS: Between July 2014 and June 2015, 99 consecutive patients underwent unilateral lumbar foraminotomy for lumbar foraminal stenosis. Surgically confirmed foraminal stenosis and the contralateral, asymptomatic neuroforamen were assessed based on a 4-point MRI grading system. Two experienced researchers independently evaluated the MR sagittal images. Interobserver agreement and intraobserver agreement were analyzed using κ statistics. RESULTS: The mean age of patients (54 women, 45 men) was 62.5 years. A total of 101 levels (202 neuroforamens) were evaluated. MRI grades for operated neuroforamens were as follows: Grade 0 in 0.99%, Grade 1 in 5.28%, Grade 2 in 14.85%, and Grade 3 in 78.88%. Interobserver agreement was moderate for operated neuroforamens (κ=0.511) and good for asymptomatic neuroforamens (κ=0.696). Intraobserver agreement by reader 1 for operated neuroforamens was good (κ=0.776) and that for asymptomatic neuroforamens was very good (κ=0.831). In terms of lumbar level, interobserver agreement for L5–S1 (κ=0.313, fair) was relatively lower than the other level (κ=0.804, very good). CONCLUSION: MRI grading system for lumbar foraminal stenosis is thought to be useful as a diagnostic tool for surgery in the lumbar spine; however, it is less reliable for symptomatic L5–S1 foraminal stenosis than for other levels. Thus, various clinical factors as well as the MRI grading system are required for surgical decision-making. Korean Neurosurgical Society 2017-07 2017-07-31 /pmc/articles/PMC5544375/ /pubmed/28689396 http://dx.doi.org/10.3340/jkns.2016.1010.004 Text en Copyright © 2017 The Korean Neurosurgical Society This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Clinical Article Jeong, Tae Seok Ahn, Yong Lee, Sang Gu Kim, Woo Kyung Son, Seong Kwon, Jung Hwa Correlation between MRI Grading System and Surgical Findings for Lumbar Foraminal Stenosis |
title | Correlation between MRI Grading System and Surgical Findings for Lumbar Foraminal Stenosis |
title_full | Correlation between MRI Grading System and Surgical Findings for Lumbar Foraminal Stenosis |
title_fullStr | Correlation between MRI Grading System and Surgical Findings for Lumbar Foraminal Stenosis |
title_full_unstemmed | Correlation between MRI Grading System and Surgical Findings for Lumbar Foraminal Stenosis |
title_short | Correlation between MRI Grading System and Surgical Findings for Lumbar Foraminal Stenosis |
title_sort | correlation between mri grading system and surgical findings for lumbar foraminal stenosis |
topic | Clinical Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5544375/ https://www.ncbi.nlm.nih.gov/pubmed/28689396 http://dx.doi.org/10.3340/jkns.2016.1010.004 |
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