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Accuracy and reproducibility of shear wave elastography according to the size and elasticity of lesions: A phantom study

While the extrinsic factors affecting reproducibility of shear wave elastography (SWE) have been well documented, there are few resources assessing intrinsic characteristics of the lesion affecting the reproducibility and accuracy of SWE. In this regard, this study aimed to evaluate the accuracy of...

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Autores principales: Kim, Harim, Kim, Haejung, Han, Boo-Kyung, Choi, Ji Soo, Ko, Eun Sook, Ko, Eun Young
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Lippincott Williams & Wilkins 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9575830/
https://www.ncbi.nlm.nih.gov/pubmed/36253983
http://dx.doi.org/10.1097/MD.0000000000031095
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author Kim, Harim
Kim, Haejung
Han, Boo-Kyung
Choi, Ji Soo
Ko, Eun Sook
Ko, Eun Young
author_facet Kim, Harim
Kim, Haejung
Han, Boo-Kyung
Choi, Ji Soo
Ko, Eun Sook
Ko, Eun Young
author_sort Kim, Harim
collection PubMed
description While the extrinsic factors affecting reproducibility of shear wave elastography (SWE) have been well documented, there are few resources assessing intrinsic characteristics of the lesion affecting the reproducibility and accuracy of SWE. In this regard, this study aimed to evaluate the accuracy of measured elasticity and the reproducibility of SWE according to the lesion size and stiffness. Two breast radiologists examined 20 targets of 4 different levels of stiffness and 5 different sizes (2.5, 4, 7, 11, and 18 mm) in a customized elasticity phantom. The B-mode image, color elastography image, and kPa measurement were obtained twice by each examiner with a 1-week interval. Inter- and intra-observer reproducibility and the accuracy of measured kPa were analyzed using intraclass correlation coefficient (ICC) and Bland-Altman analysis. Subgroup analysis was run to evaluate the effect of lesion size and stiffness on the reproducibility and accuracy of measured kPa. Inter- and intraobserver reproducibility for measuring kPa showed excellent agreement (ICC: 0.9742 and 0.9582; ICC: 0.9932 and 0.9294). The size and stiffness of the targets did not affect reproducibility. The overall accuracy of measured kPa was very high (ICC: 0.8049). In the subgroup analysis, targets that were ≤4 mm in size showed lower accuracy (ICC: 0.542), whereas targets that were 7 and 11 mm in size showed higher accuracy (ICC: 0.9832 and 0.9656, respectively). SWE shows excellent reproducibility regardless of lesion size or stiffness in phantom targets. The accuracy of measured kPa is high in lesions that are 7 and 11 mm in size but is low in lesions that are ≤4 mm in size.
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spelling pubmed-95758302022-10-17 Accuracy and reproducibility of shear wave elastography according to the size and elasticity of lesions: A phantom study Kim, Harim Kim, Haejung Han, Boo-Kyung Choi, Ji Soo Ko, Eun Sook Ko, Eun Young Medicine (Baltimore) 5750 While the extrinsic factors affecting reproducibility of shear wave elastography (SWE) have been well documented, there are few resources assessing intrinsic characteristics of the lesion affecting the reproducibility and accuracy of SWE. In this regard, this study aimed to evaluate the accuracy of measured elasticity and the reproducibility of SWE according to the lesion size and stiffness. Two breast radiologists examined 20 targets of 4 different levels of stiffness and 5 different sizes (2.5, 4, 7, 11, and 18 mm) in a customized elasticity phantom. The B-mode image, color elastography image, and kPa measurement were obtained twice by each examiner with a 1-week interval. Inter- and intra-observer reproducibility and the accuracy of measured kPa were analyzed using intraclass correlation coefficient (ICC) and Bland-Altman analysis. Subgroup analysis was run to evaluate the effect of lesion size and stiffness on the reproducibility and accuracy of measured kPa. Inter- and intraobserver reproducibility for measuring kPa showed excellent agreement (ICC: 0.9742 and 0.9582; ICC: 0.9932 and 0.9294). The size and stiffness of the targets did not affect reproducibility. The overall accuracy of measured kPa was very high (ICC: 0.8049). In the subgroup analysis, targets that were ≤4 mm in size showed lower accuracy (ICC: 0.542), whereas targets that were 7 and 11 mm in size showed higher accuracy (ICC: 0.9832 and 0.9656, respectively). SWE shows excellent reproducibility regardless of lesion size or stiffness in phantom targets. The accuracy of measured kPa is high in lesions that are 7 and 11 mm in size but is low in lesions that are ≤4 mm in size. Lippincott Williams & Wilkins 2022-10-14 /pmc/articles/PMC9575830/ /pubmed/36253983 http://dx.doi.org/10.1097/MD.0000000000031095 Text en Copyright © 2022 the Author(s). Published by Wolters Kluwer Health, Inc. https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the Creative Commons Attribution License 4.0 (CCBY) (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle 5750
Kim, Harim
Kim, Haejung
Han, Boo-Kyung
Choi, Ji Soo
Ko, Eun Sook
Ko, Eun Young
Accuracy and reproducibility of shear wave elastography according to the size and elasticity of lesions: A phantom study
title Accuracy and reproducibility of shear wave elastography according to the size and elasticity of lesions: A phantom study
title_full Accuracy and reproducibility of shear wave elastography according to the size and elasticity of lesions: A phantom study
title_fullStr Accuracy and reproducibility of shear wave elastography according to the size and elasticity of lesions: A phantom study
title_full_unstemmed Accuracy and reproducibility of shear wave elastography according to the size and elasticity of lesions: A phantom study
title_short Accuracy and reproducibility of shear wave elastography according to the size and elasticity of lesions: A phantom study
title_sort accuracy and reproducibility of shear wave elastography according to the size and elasticity of lesions: a phantom study
topic 5750
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9575830/
https://www.ncbi.nlm.nih.gov/pubmed/36253983
http://dx.doi.org/10.1097/MD.0000000000031095
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