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Shear wave elastography for breast masses is highly reproducible
OBJECTIVES: To evaluate intra- and interobserver reproducibility of shear wave elastography (SWE) for breast masses. METHODS: For intraobserver reproducibility, each observer obtained three consecutive SWE images of 758 masses that were visible on ultrasound. 144 (19%) were malignant. Weighted kappa...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer-Verlag
2011
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3321140/ https://www.ncbi.nlm.nih.gov/pubmed/22210408 http://dx.doi.org/10.1007/s00330-011-2340-y |
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author | Cosgrove, David O. Berg, Wendie A. Doré, Caroline J Skyba, Danny M. Henry, Jean-Pierre Gay, Joel Cohen-Bacrie, Claude |
author_facet | Cosgrove, David O. Berg, Wendie A. Doré, Caroline J Skyba, Danny M. Henry, Jean-Pierre Gay, Joel Cohen-Bacrie, Claude |
author_sort | Cosgrove, David O. |
collection | PubMed |
description | OBJECTIVES: To evaluate intra- and interobserver reproducibility of shear wave elastography (SWE) for breast masses. METHODS: For intraobserver reproducibility, each observer obtained three consecutive SWE images of 758 masses that were visible on ultrasound. 144 (19%) were malignant. Weighted kappa was used to assess the agreement of qualitative elastographic features; the reliability of quantitative measurements was assessed by intraclass correlation coefficients (ICC). For the interobserver reproducibility, a blinded observer reviewed images and agreement on features was determined. RESULTS: Mean age was 50 years; mean mass size was 13 mm. Qualitatively, SWE images were at least reasonably similar for 666/758 (87.9%). Intraclass correlation for SWE diameter, area and perimeter was almost perfect (ICC ≥ 0.94). Intraobserver reliability for maximum and mean elasticity was almost perfect (ICC = 0.84 and 0.87) and was substantial for the ratio of mass-to-fat elasticity (ICC = 0.77). Interobserver agreement was moderate for SWE homogeneity (κ = 0.57), substantial for qualitative colour assessment of maximum elasticity (κ = 0.66), fair for SWE shape (κ = 0.40), fair for B-mode mass margins (κ = 0.38), and moderate for B-mode mass shape (κ = 0.58), orientation (κ = 0.53) and BI-RADS assessment (κ = 0.59). CONCLUSIONS: SWE is highly reproducible for assessing elastographic features of breast masses within and across observers. SWE interpretation is at least as consistent as that of BI-RADS ultrasound B-mode features. KEY POINTS: • Shear wave ultrasound elastography can measure the stiffness of breast tissue • It provides a qualitatively and quantitatively interpretable colour-coded map of tissue stiffness • Intraobserver reproducibility of SWE is almost perfect while intraobserver reproducibility of SWE proved to be moderate to substantial • The most reproducible SWE features between observers were SWE image homogeneity and maximum elasticity |
format | Online Article Text |
id | pubmed-3321140 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | Springer-Verlag |
record_format | MEDLINE/PubMed |
spelling | pubmed-33211402012-04-20 Shear wave elastography for breast masses is highly reproducible Cosgrove, David O. Berg, Wendie A. Doré, Caroline J Skyba, Danny M. Henry, Jean-Pierre Gay, Joel Cohen-Bacrie, Claude Eur Radiol Breast OBJECTIVES: To evaluate intra- and interobserver reproducibility of shear wave elastography (SWE) for breast masses. METHODS: For intraobserver reproducibility, each observer obtained three consecutive SWE images of 758 masses that were visible on ultrasound. 144 (19%) were malignant. Weighted kappa was used to assess the agreement of qualitative elastographic features; the reliability of quantitative measurements was assessed by intraclass correlation coefficients (ICC). For the interobserver reproducibility, a blinded observer reviewed images and agreement on features was determined. RESULTS: Mean age was 50 years; mean mass size was 13 mm. Qualitatively, SWE images were at least reasonably similar for 666/758 (87.9%). Intraclass correlation for SWE diameter, area and perimeter was almost perfect (ICC ≥ 0.94). Intraobserver reliability for maximum and mean elasticity was almost perfect (ICC = 0.84 and 0.87) and was substantial for the ratio of mass-to-fat elasticity (ICC = 0.77). Interobserver agreement was moderate for SWE homogeneity (κ = 0.57), substantial for qualitative colour assessment of maximum elasticity (κ = 0.66), fair for SWE shape (κ = 0.40), fair for B-mode mass margins (κ = 0.38), and moderate for B-mode mass shape (κ = 0.58), orientation (κ = 0.53) and BI-RADS assessment (κ = 0.59). CONCLUSIONS: SWE is highly reproducible for assessing elastographic features of breast masses within and across observers. SWE interpretation is at least as consistent as that of BI-RADS ultrasound B-mode features. KEY POINTS: • Shear wave ultrasound elastography can measure the stiffness of breast tissue • It provides a qualitatively and quantitatively interpretable colour-coded map of tissue stiffness • Intraobserver reproducibility of SWE is almost perfect while intraobserver reproducibility of SWE proved to be moderate to substantial • The most reproducible SWE features between observers were SWE image homogeneity and maximum elasticity Springer-Verlag 2011-12-31 2012 /pmc/articles/PMC3321140/ /pubmed/22210408 http://dx.doi.org/10.1007/s00330-011-2340-y Text en © The Author(s) 2011 https://creativecommons.org/licenses/by-nc/4.0/ This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. |
spellingShingle | Breast Cosgrove, David O. Berg, Wendie A. Doré, Caroline J Skyba, Danny M. Henry, Jean-Pierre Gay, Joel Cohen-Bacrie, Claude Shear wave elastography for breast masses is highly reproducible |
title | Shear wave elastography for breast masses is highly reproducible |
title_full | Shear wave elastography for breast masses is highly reproducible |
title_fullStr | Shear wave elastography for breast masses is highly reproducible |
title_full_unstemmed | Shear wave elastography for breast masses is highly reproducible |
title_short | Shear wave elastography for breast masses is highly reproducible |
title_sort | shear wave elastography for breast masses is highly reproducible |
topic | Breast |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3321140/ https://www.ncbi.nlm.nih.gov/pubmed/22210408 http://dx.doi.org/10.1007/s00330-011-2340-y |
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