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Can Supine Magnetic Resonance Imaging Be an Alternative to Standing Lateral Radiographs for Evaluating Cervical Sagittal Alignment?

OBJECTIVE: Recently, many studies have reported that cervical alignment is related to clinical outcomes. However, poor visibility of anatomical structures during X-ray (XR) imaging limits accurate measurements. In supine magnetic resonance (MR) imaging, the boundary of the anatomical structure is cl...

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Autores principales: Bae, Sung Hyun, Son, Dong Wuk, Lee, Su Hun, Lee, Jun Seok, Lee, Sang Weon, Song, Geun Sung
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Korean Neurotraumatology Society 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7607026/
https://www.ncbi.nlm.nih.gov/pubmed/33163431
http://dx.doi.org/10.13004/kjnt.2020.16.e18
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author Bae, Sung Hyun
Son, Dong Wuk
Lee, Su Hun
Lee, Jun Seok
Lee, Sang Weon
Song, Geun Sung
author_facet Bae, Sung Hyun
Son, Dong Wuk
Lee, Su Hun
Lee, Jun Seok
Lee, Sang Weon
Song, Geun Sung
author_sort Bae, Sung Hyun
collection PubMed
description OBJECTIVE: Recently, many studies have reported that cervical alignment is related to clinical outcomes. However, poor visibility of anatomical structures during X-ray (XR) imaging limits accurate measurements. In supine magnetic resonance (MR) imaging, the boundary of the anatomical structure is clear, but the correlation to XR images taken in a standing position is problematic. In this study, we evaluated the agreement of sagittal alignment parameters between MR and XR measurements. METHODS: We retrospectively reviewed 268 patients. Cervical sagittal parameters were measured using XR and MR images, and their relationships were evaluated using Pearson's correlation, paired t-tests, and 2-way random, single score intraclass correlation coefficient (ICCs) (2,1). Using simple linear regression analysis, MR results were converted to the expected value (MR-E). The subsequent comparison of MR-Es with XRs was used to examine whether MR-Es could replace XRs when the measurement difference was less than 2 mm or 2°. RESULTS: The correlation between the MR and XR measurements was high, but ICCs showed low reliability. All parameters were significantly different between XR and MR measurements in paired t-tests. Converting the MR values eliminated the t-test differences between MR-Es and XRs, but did not affect correlations and ICCs. The replacement ratio included the Cobb angle: 20.3%, T1: 27.1%, the sagittal vertical axis: 17.6%, C1–2: 29.7%, and C2: 16.0%. CONCLUSION: These results indicate that supine MR measurements could not replace upright XR measurements.
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spelling pubmed-76070262020-11-05 Can Supine Magnetic Resonance Imaging Be an Alternative to Standing Lateral Radiographs for Evaluating Cervical Sagittal Alignment? Bae, Sung Hyun Son, Dong Wuk Lee, Su Hun Lee, Jun Seok Lee, Sang Weon Song, Geun Sung Korean J Neurotrauma Clinical Article OBJECTIVE: Recently, many studies have reported that cervical alignment is related to clinical outcomes. However, poor visibility of anatomical structures during X-ray (XR) imaging limits accurate measurements. In supine magnetic resonance (MR) imaging, the boundary of the anatomical structure is clear, but the correlation to XR images taken in a standing position is problematic. In this study, we evaluated the agreement of sagittal alignment parameters between MR and XR measurements. METHODS: We retrospectively reviewed 268 patients. Cervical sagittal parameters were measured using XR and MR images, and their relationships were evaluated using Pearson's correlation, paired t-tests, and 2-way random, single score intraclass correlation coefficient (ICCs) (2,1). Using simple linear regression analysis, MR results were converted to the expected value (MR-E). The subsequent comparison of MR-Es with XRs was used to examine whether MR-Es could replace XRs when the measurement difference was less than 2 mm or 2°. RESULTS: The correlation between the MR and XR measurements was high, but ICCs showed low reliability. All parameters were significantly different between XR and MR measurements in paired t-tests. Converting the MR values eliminated the t-test differences between MR-Es and XRs, but did not affect correlations and ICCs. The replacement ratio included the Cobb angle: 20.3%, T1: 27.1%, the sagittal vertical axis: 17.6%, C1–2: 29.7%, and C2: 16.0%. CONCLUSION: These results indicate that supine MR measurements could not replace upright XR measurements. Korean Neurotraumatology Society 2020-06-05 /pmc/articles/PMC7607026/ /pubmed/33163431 http://dx.doi.org/10.13004/kjnt.2020.16.e18 Text en Copyright © 2020 Korean Neurotraumatology Society https://creativecommons.org/licenses/by-nc/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (https://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
Bae, Sung Hyun
Son, Dong Wuk
Lee, Su Hun
Lee, Jun Seok
Lee, Sang Weon
Song, Geun Sung
Can Supine Magnetic Resonance Imaging Be an Alternative to Standing Lateral Radiographs for Evaluating Cervical Sagittal Alignment?
title Can Supine Magnetic Resonance Imaging Be an Alternative to Standing Lateral Radiographs for Evaluating Cervical Sagittal Alignment?
title_full Can Supine Magnetic Resonance Imaging Be an Alternative to Standing Lateral Radiographs for Evaluating Cervical Sagittal Alignment?
title_fullStr Can Supine Magnetic Resonance Imaging Be an Alternative to Standing Lateral Radiographs for Evaluating Cervical Sagittal Alignment?
title_full_unstemmed Can Supine Magnetic Resonance Imaging Be an Alternative to Standing Lateral Radiographs for Evaluating Cervical Sagittal Alignment?
title_short Can Supine Magnetic Resonance Imaging Be an Alternative to Standing Lateral Radiographs for Evaluating Cervical Sagittal Alignment?
title_sort can supine magnetic resonance imaging be an alternative to standing lateral radiographs for evaluating cervical sagittal alignment?
topic Clinical Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7607026/
https://www.ncbi.nlm.nih.gov/pubmed/33163431
http://dx.doi.org/10.13004/kjnt.2020.16.e18
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