Abstract
Elastography is a relatively new ultrasound technique. Both strain and shear wave elastography have been shown to have high sensitivity and specificity for characterizing breast lesions as benign or malignant. There is a learning curve for strain elastography. Strain elastography provides only qualitative information; however, a unique characteristic of breast lesions allows for high accuracy in lesion characterization. Benign lesions appear smaller on elastography than in B-mode, where malignancies appear larger. Shear wave elastography is qualitative and the stiffness value can be used to characterize the lesion. This chapter reviews the principles and techniques of breast elastography, reviews the literature, and provides a discussion on the elastographic findings in both benign and malignant breast lesions. Artifacts and limitations are reviewed.
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