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Reproducibility and diagnostic performance of shear wave elastography in evaluating breast solid mass
Sun Hong1, Ok Hee Woo1, Hye Seon Shin1
1Department of Diagnostic Radiology, Korea University Guro Hospital, 148, Gurodong-ro, Gurogu, Seoul 152-703, Republic of Korea.
Clinical Imaging
|April 14, 2017
Summary
Shear wave elastography
Area of Science:
- Radiology
- Medical Imaging
- Biophysics
Background:
- Solid breast masses require accurate diagnostic tools.
- Shear wave elastography (SWE) is an emerging imaging technique.
- Evaluating diagnostic performance of SWE parameters is crucial.
Purpose of the Study:
- To compare the diagnostic performance of SWE's color overlay pattern (COP) and maximum elasticity (Emax) in solid breast masses.
- To assess the interobserver agreement and reproducibility of COP and Emax.
- To determine if COP is a more reliable parameter than Emax for breast mass evaluation.
Main Methods:
- Two radiologists independently performed SWE on 264 solid breast masses.
- Images were reviewed for COP classification in a double-blinded manner.
- Interobserver agreement (κ, ICC) and diagnostic ability (AUC) were analyzed.
Main Results:
- Almost perfect interobserver agreement for COP (κ=0.908) and high agreement for Emax (ICC=0.89).
- COP demonstrated significantly higher diagnostic ability (AUC=0.954) than Emax (AUC=0.915).
- Combined COP and Emax showed no significant improvement over COP alone.
Conclusions:
- SWE's color overlay pattern and Emax are highly reproducible for breast masses.
- COP exhibits superior diagnostic performance compared to Emax.
- COP may serve as a more dependable parameter for evaluating solid breast masses.