Digital image correlation (DIC) algorithm was applied to 2D and 3D B-mode ultrasound (US) images to create 2D and 3D elastograms based on displacement-gradient. The roughness of elastograms caused by signal noises and sub-pixel errors could be greatly improved by employing the smoothing function based on the penalized least square regression method. Using the smoothed elastogram, the size and t...

This work deals with the use of speckle information contained in 2D B-mode ultrasound images to control the displacement of a robotized ultrasound probe with a visual servoing control scheme. The objective is to automatically synchronize the displacement of a conventional 2D ultrasound probe held by a medical robot in such a way to stabilize the image of a moving soft tissue. Such a workable me...

Most quasi-static ultrasound elastography methods image only the axial strain, derived from displacements measured in the direction of ultrasound propagation. In other directions, the beam lacks high resolution phase information and displacement estimation is therefore less precise. However, these estimates can be improved by steering the ultrasound beam through multiple angles and combining di...

In this paper, a two-dimensional (2D) displacement sensor based on the diagonal symmetry complementary split-ring resonator (CSRR) structure is proposed. The one-dimensional (1D) initially developed by etching ring ground plane, and triangle metal patch used as mover. When mover attached, CSRR formed, thereby inducing resonant frequency. of can be retrieved variation in Then, extended for desig...

0010-2180/$ see front matter 2010 The Combust doi:10.1016/j.combustflame.2010.11.014 ⇑ Corresponding author. Fax: +44 1517944848. E-mail addresses: [email protected] [email protected] (G. Hartung), m.katragadda@liver [email protected] (C.F. Kaminski). In a recent study, a light sheet imaging approach has been proposed (Hartung et al., J. Appl. Phys. B 96 (2009) 843–862) which permits mea...

An efficient C0 continuous two dimensional (2D) finite element (FE) model is developed based on a refined higher order shear deformation theory (RHSDT) for the static analysis of soft core sandwich plate having imperfections at the layer interfaces. In this (RHSDT) theory, the in-plane displacement field for the face sheets and the core is obtained by superposing a globally varying cubic displa...