INTRODUCTION Freehand ultrasound real-time elastography (RTE) is a simple technique allowing direct visualization of the elastogramme superimposed on the B-mode -image. The objective of RTE is to investigate stiffness and related parameters such as local tissue strain with a view to adding new information related to tissue morphology and architecture. MATERIAL AND METHODS This was a pilot stu...

The aim of the paper is to introduce readers to EFSUMB's wide ranging activities which have embraced modern technology. The most recent is the Atlas www.efsumb-atlas.org primarily introduced to accompany the Elastography, CEUS Liver and Non Liver Guidelines but intended to expand to all areas to offer a database of images which can be freely downloaded. Hosting eBooks on our website is another ...

This paper compares the performance of various spectral shift estimators for use in spectral elastography, namely, the normalized cross-correlation (NCC), sum squared difference (SSD) and sum absolute difference (SAD). Simulation and experimental results demonstrate that the spectral SSD-based elastographic method exhibits no marked difference in performance compared to the more computationally...

Stabilized mixes are used in the construction of bearing layers in asphalt and concrete pavement structures. Two nondestructive methods: resonant frequency method and ultrasonic pulse velocity method, were used for estimation of elastic properties of fly ash-stabilized mixes. Stabilized mixes were designed containing sand from the river Drava and binder composed of different share of cement and...

In axial-shear strain elastography, the local axial-shear strain resulting from the application of quasi-static axial compression to an inhomogeneous material is imaged. In this paper, we investigated the image quality of the axial-shear strain estimates in terms of the signal-to-noise ratio (SNR(asse)) and contrast-to-noise ratio (CNR(asse)) using simulations and experiments. Specifically, we ...

[This corrects the article on p. 76 in vol. 17, PMID: 24744801.].

C. L. Johnson, D. D. Chen, A. A. Gharibans, W. C. Olivero, B. P. Sutton, and J. G. Georgiadis Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, United States, Department of Neurosurgery, University of Illinois at Urbana-Champaign, Urbana, IL, United States, Beckman Institute for Advanced Science and Technology, University of Illinois at Ur...

Optical coherence tomography (OCT) has been applied to the study of the microscopic deformation of biological tissue under compressive stress. We describe the hardware and theory of operation of an OCT elastography system that measures internal displacements as small as a few micrometers by using 2D cross-correlation speckle tracking. Results obtained from gelatin scattering models, pork meat, ...