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Visually assessed colour overlay features in shear-wave elastography for breast masses: quantification and diagnostic performance

 Hye Mi Gweon  ;  Ji Hyun Youk  ;  Eun Ju Son  ;  Jeong-Ah Kim 
 EUROPEAN RADIOLOGY, Vol.23(3) : 658-663, 2013 
Journal Title
Issue Date
Adult ; Aged ; Breast Neoplasms/diagnosis* ; Breast Neoplasms/physiopathology* ; Color ; Colorimetry/methods* ; Elasticity Imaging Techniques/methods* ; Female ; Humans ; Image Enhancement/methods* ; Middle Aged ; Observer Variation ; Reproducibility of Results ; Sensitivity and Specificity ; Shear Strength ; Ultrasonography, Mammary/methods* ; User-Computer Interface* ; Young Adult
Elastography ; Ultrasound ; Breast ; Shear wave ; Elasticity
OBJECTIVES: To determine whether colour overlay features can be quantified by the standard deviation (SD) of the elasticity measured in shear-wave elastography (SWE) and to evaluate the diagnostic performance for breast masses. METHODS: One hundred thirty-three breast lesions in 119 consecutive women who underwent SWE before US-guided core needle biopsy or surgical excision were analysed. SWE colour overlay features were assessed using two different colour overlay pattern classifications. Quantitative SD of the elasticity value was measured with the region of interest including the whole breast lesion. RESULTS: For the four-colour overlay pattern, the area under the ROC curve (Az) was 0.947; with a cutoff point between pattern 2 and 3, sensitivity and specificity were 94.4 % and 81.4 %. According to the homogeneity of the elasticity, the Az was 0.887; with a cutoff point between reasonably homogeneous and heterogeneous, sensitivity and specificity were 86.1 % and 82.5 %. For the SD of the elasticity, the Az was 0.944; with a cutoff point of 12.1, sensitivity and specificity were 88.9 % and 89.7 %. The colour overlay features showed significant correlations with the quantitative SD of the elasticity (P < 0.001). CONCLUSION: The colour overlay features and the SD of the elasticity in SWE showed excellent diagnostic performance and showed good correlations between them.
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1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
Gweon, Hye Mi(권혜미) ORCID logo https://orcid.org/0000-0002-3054-1532
Kim, Jeong Ah(김정아) ORCID logo https://orcid.org/0000-0003-4949-4913
Son, Eun Ju(손은주) ORCID logo https://orcid.org/0000-0002-7895-0335
Youk, Ji Hyun(육지현) ORCID logo https://orcid.org/0000-0002-7787-780X
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