In-vivo human skin elastography : a preliminary study

This study is devoted to the estimation of the potential of the high frequency imaging (20 MHz) as a tool to better understand the behaviour of the skin under static stress. In the context of the static elastography technique we have used 2 methods to estimate axial strain field : the gradient method and the scaling factor method. In this paper we evaluate the performances of these two methods in several ways : simulations of layered media by means of 2D finite element model and FIELD II software, measurements of strain field in several cryogel phantoms and in vivo measurements in the skin of the forearm.