 Elastography is an imaging method which estimates tissue elasticity. The first elastography method which appeared was Transient Elastography TE, followed by Real Time Elastography RT-E and Acoustic Radiation Force Impulse ARFI. TE was a method especially developed for noninvasive assessment of liver fibrosis as an alternative to liver biopsy. Unlike these, RT-E and ARFI have multiple applications in diffuse and tumoral pathology. 