Elastography is a medical imaging modality that maps the elastic properties and stiffness of soft tissue. The main idea is that whether the tissue is hard or soft will give diagnostic information about the presence or status of disease
Various chronic liver diseases such as hepatitis B, C, and fatty liver disease can lead to tissue damage and subsequent scar tissue formation. As the scar tissue accumulates, the liver loses some of its elasticity and becomes stiffer. Liver elastography involves the use of a surface ultrasound probe that delivers a low frequency pulse or shear wave to a small volume of liver tissue under the rib cage. The transmission of the sound wave is completely painless. Doctors from the Hepatology Program at the University of Michigan use the FibroScan device, which was approved by the FDA for liver elastography measurements in patients with known chronic liver disease and particularly for patients with chronic hepatitis C and fatty liver disease.
Make a literature review of breast elastography, an imaging technique not so new today, for many still unknown in diagnostic ultrasound, which emerges in order to characterize complementarily tissues of the breast, contributing to differential diagnosis between benign and malignant lesions.