Sub-Voxel Micro-Architecture Assessment by Diffusion of Mechanical Shear Waves
Understanding the effects of micro-obstacles on wave propagation is an essential part of extracting micro-structural information from MR-Elastography data from tissue abnormalities such as small metastases or neovascularization. To date, the effects of wave scattering and the effect on mechanical properties measurements remain poorly understood. Nevertheless, scattering plays a major role in linking the physiological properties of a biological tissue and its mechanical properties measured by MR-Elastography. In this study, the influence of microparticle size distribution on wave scattering frequency dependence is investigated from a numerical and experimental approach. It is shown that shear wave dispersion reveals the underlying particle size distribution and that FEM simulations and experiments match.
Shear wave diffusion dispersion power-law particle size distribution fractal.
Simon Auguste Lambert Simon Chatelin S.P. N(a)sholm Sverre Holm Ralph Sinkus
U773-CRB3, INSERM, Paris, France Informatics, University of Oslo, Oslo, Norway
国际会议
The Fifth Symposium on Fractional Differentiation and Its Applications(第五届国际自动控制联合会分数阶导数及其应用会议)
南京
英文
1-4
2012-05-14（万方平台首次上网日期，不代表论文的发表时间）