Fig. 9From: ARFI: from basic principles to clinical applications in diffuse chronic disease—a reviewEffect of anisotropy on the speed of propagation of the shear waves. When the axis of the main US beam is parallel to the orientation of the vasa recta and Henle loops (orange box in a), the shear waves travel perpendicular to these structures and then move slowly (2.52 m/s in b). In the opposite condition (blue box in a), the SWV is higher (3.99 m/s in c)Back to article page