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A paired comparison of nerve dimensions using B-Mode ultrasound and shear wave elastography during regional anaesthesia
INTRODUCTION: Shear wave elastography (SWE) presents nerves in colour, but the dimensions of its colour maps have not been validated with paired B-Mode nerve images. Our primary objective was to define the bias and limits of agreement of SWE with B-Mode nerve diameter. Our secondary objectives were...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
SAGE Publications
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10034658/ https://www.ncbi.nlm.nih.gov/pubmed/36969534 http://dx.doi.org/10.1177/1742271X221091726 |
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author | Lockwood, Heather McLeod, Graeme A |
author_facet | Lockwood, Heather McLeod, Graeme A |
author_sort | Lockwood, Heather |
collection | PubMed |
description | INTRODUCTION: Shear wave elastography (SWE) presents nerves in colour, but the dimensions of its colour maps have not been validated with paired B-Mode nerve images. Our primary objective was to define the bias and limits of agreement of SWE with B-Mode nerve diameter. Our secondary objectives were to compare nerve area and shape, and provide a clinical standard for future application of new colour imaging technologies such as artificial intelligence. MATERIALS AND METHODS: Eleven combined ultrasound-guided regional nerve blocks were conducted using a dual-mode transducer. Two raters outlined nerve margins on 110 paired B-Mode and SWE images every second for 20 s before and during injection. Bias and limits of agreement were plotted on Bland-Altman plots. We hypothesized that the bias of nerve diameter would be <2.5% and that the percent limits of agreement would lie ±0.67% (2 SD) of the bias. RESULTS: There was no difference in the bias (95% confidence interval (CI) limits of agreement) of nerve diameter measurement, 0.01 (−0.14 to 0.16) cm, P = 0.85, equivalent to a 1.4% (−56.6% to 59.5) % difference. The bias and limits of agreement were 0.03 (−0.08 to 0.15) cm(2), P = 0.54 for cross-sectional nerve area; and 0.02 (−0.03 to 0.07), P = 0.45 for shape. Reliability (ICC) between raters was 0.96 (0.94–0.98) for B-Mode nerve area and 0.91 (0.83–0.95) for SWE nerve area. CONCLUSIONS: Nerve diameter measurement from B-Mode and SWE images fell within a priori measures of bias and limits of agreement. |
format | Online Article Text |
id | pubmed-10034658 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | SAGE Publications |
record_format | MEDLINE/PubMed |
spelling | pubmed-100346582023-03-24 A paired comparison of nerve dimensions using B-Mode ultrasound and shear wave elastography during regional anaesthesia Lockwood, Heather McLeod, Graeme A Ultrasound Technical INTRODUCTION: Shear wave elastography (SWE) presents nerves in colour, but the dimensions of its colour maps have not been validated with paired B-Mode nerve images. Our primary objective was to define the bias and limits of agreement of SWE with B-Mode nerve diameter. Our secondary objectives were to compare nerve area and shape, and provide a clinical standard for future application of new colour imaging technologies such as artificial intelligence. MATERIALS AND METHODS: Eleven combined ultrasound-guided regional nerve blocks were conducted using a dual-mode transducer. Two raters outlined nerve margins on 110 paired B-Mode and SWE images every second for 20 s before and during injection. Bias and limits of agreement were plotted on Bland-Altman plots. We hypothesized that the bias of nerve diameter would be <2.5% and that the percent limits of agreement would lie ±0.67% (2 SD) of the bias. RESULTS: There was no difference in the bias (95% confidence interval (CI) limits of agreement) of nerve diameter measurement, 0.01 (−0.14 to 0.16) cm, P = 0.85, equivalent to a 1.4% (−56.6% to 59.5) % difference. The bias and limits of agreement were 0.03 (−0.08 to 0.15) cm(2), P = 0.54 for cross-sectional nerve area; and 0.02 (−0.03 to 0.07), P = 0.45 for shape. Reliability (ICC) between raters was 0.96 (0.94–0.98) for B-Mode nerve area and 0.91 (0.83–0.95) for SWE nerve area. CONCLUSIONS: Nerve diameter measurement from B-Mode and SWE images fell within a priori measures of bias and limits of agreement. SAGE Publications 2022-05-09 2022-11 /pmc/articles/PMC10034658/ /pubmed/36969534 http://dx.doi.org/10.1177/1742271X221091726 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/This article is distributed under the terms of the Creative Commons Attribution 4.0 License (https://creativecommons.org/licenses/by/4.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage). |
spellingShingle | Technical Lockwood, Heather McLeod, Graeme A A paired comparison of nerve dimensions using B-Mode ultrasound and shear wave elastography during regional anaesthesia |
title | A paired comparison of nerve dimensions using B-Mode ultrasound and
shear wave elastography during regional anaesthesia |
title_full | A paired comparison of nerve dimensions using B-Mode ultrasound and
shear wave elastography during regional anaesthesia |
title_fullStr | A paired comparison of nerve dimensions using B-Mode ultrasound and
shear wave elastography during regional anaesthesia |
title_full_unstemmed | A paired comparison of nerve dimensions using B-Mode ultrasound and
shear wave elastography during regional anaesthesia |
title_short | A paired comparison of nerve dimensions using B-Mode ultrasound and
shear wave elastography during regional anaesthesia |
title_sort | paired comparison of nerve dimensions using b-mode ultrasound and
shear wave elastography during regional anaesthesia |
topic | Technical |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10034658/ https://www.ncbi.nlm.nih.gov/pubmed/36969534 http://dx.doi.org/10.1177/1742271X221091726 |
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