Fig. 4From: ARFI: from basic principles to clinical applications in diffuse chronic disease—a reviewEffect of the compression on the speed of propagation of the shear waves. Longitudinal US scans on the left lobe of the liver in a healthy subject. A lower SWV value (1.18 vs. 1.52 m/s) is measured, exerting on the transducer a mild (a) rather than a strong (b) manual compressionBack to article page