Differentiating solid breast masses: comparison of the diagnostic efficacy of shear wave elastography and magnetic resonance imaging
Author:
Farghadani Maryam1, Barikbin Rozbeh2, Rezaei Mostafa Haji3, Hekmatnia Ali2, Aalinezhad Marzieh2, Zare Hosein2
Affiliation:
1. Department of Radiology , Cancer Prevention Research Center, School of medicine, Isfahan University of Medical Sciences , Isfahan , Iran 2. Department of Radiology , Isfahan University of Medical Sciences , Isfahan , Iran 3. Infectious Diseases Research Center, Kashan University of Medical Sciences , Kashan , Iran
Abstract
Abstract
Objectives
Shear wave elastography (SWE) quantitatively determines the nature of the breast lesions. Few previous studies have compared the diagnostic value of this modality with other imaging techniques. The present study aimed to compare the diagnostic value of SWE with that of magnetic resonance imaging (MRI) in detecting the nature of the breast masses.
Methods
In this cross-sectional study, 80 patients with breast lumps who had Breast Imaging Reporting and Data System (BI-RADS) score of three or higher based on mammography and/or screening ultrasonography, underwent 3D SWE and MRI. The lesions were classified according to MRI BI-RADS scoring; Mean elasticity (Emean) and elasticity ratio (Eratio) for each lesion were also determined by SWE. The results of these two modalities were compared with histopathologic diagnosis as the gold standard method; diagnostic value and diagnostic agreement were then calculated.
Results
Of the masses, 46.2% were histopathologically proven to be malignant. The Emean for benign and malignant masses was 34.04 ± 19.51 kPa and 161.92 ± 58.14 kPa, respectively. Both modalities had diagnostic agreement with histopathologic results (p<0.001). Kappa coefficient was 0.87 for SWE and 0.42 for MRI. The sensitivity of both methods was 94.59% (95% CI: 81.81–99.34), while the specificity and accuracy were 48.84% [95% CI: 33.31–64.54] and 70.0% [95% CI: 58.72–79.74] for MRI, and 93.02% [95% CI: 80.94–98.54] and 93.75% [95% CI: 86.01–97.94] for SWE.
Conclusions
SWE has better diagnostic value in terms of determining the nature of the breast masses. SWE can increase the diagnostic function of differentiating benign masses from malignant ones.
Publisher
Walter de Gruyter GmbH
Subject
Biochemistry (medical),Clinical Biochemistry,Public Health, Environmental and Occupational Health,Health Policy,Medicine (miscellaneous)
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