Local measurements of the diffusion constant in multiple scattering media: Application to human trabecular bone imaging

被引：22

作者：

Aubry, Alexandre ^{[1
]}

Derode, Arnaud ^{[1
]}

Padilla, Frederic ^{[2
]}

机构：

[1] Univ Paris 07, CNRS, UMR 7587, ESPCI,LOA, Paris, France

[2] Univ Paris 06, CNRS, UMR 7623, LIP, Paris, France

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 12期

关键词：

D O I：

10.1063/1.2901379

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present local measurements of the diffusion constant for ultrasonic waves undergoing multiple scattering. The experimental setup uses a coherent array of programmable transducers. By achieving Gaussian beamforming at emission and reception, an array of virtual sources and receivers located in the near field is constructed. A matrix treatment is proposed to separate the incoherent intensity from the coherent backscattering peak. Local measurements of the diffusion constant D are then achieved. This technique is applied to a real case: a sample of human trabecular bone for which the ultrasonic characterization of multiple scattering is an issue. (C) 2008 American Institute of Physics.

引用

页数：3

共 8 条

[1] COHERENT BACKSCATTERING OF LIGHT BY DISORDERED MEDIA - ANALYSIS OF THE PEAK LINE-SHAPE [J].