A novel and robust method for rapid strain estimation in elastography

SK Alam - Ultrasonic imaging, 2004 - journals.sagepub.com
In elastography, change in signal shape from tissue deformation and nonaxial tissue motion
reduce correlation between the pre-and postcompression echo signals. Appropriate global …

Analysis of an adaptive strain estimation technique in elastography

S Srinivasan, F Kallel, R Souchon… - Ultrasonic …, 2002 - journals.sagepub.com
Elastography is based on the estimation of strain due to tissue compression or expansion.
Conventional elastography involves computing strain as the gradient of the displacement …

Elastographic imaging using staggered strain estimates

S Srinivasan, J Ophir, SK Alam - Ultrasonic imaging, 2002 - journals.sagepub.com
Conventional techniques in elastography estimate strain as the gradient of the displacement
estimates obtained through crosscorrelation of pre-and postcompression rf A-lines. In these …

Novel spline-based approach for robust strain estimation in elastography

SK Alam - Ultrasonic imaging, 2010 - journals.sagepub.com
Robust strain estimation is important in elastography. However, a high signal-to-noise ratio
(SNR) and contrast-to-noise ratio (CNR) are sometimes attained by sacrificing resolution …

A least-squares strain estimator for elastography

F Kallel, J Ophir - Ultrasonic imaging, 1997 - journals.sagepub.com
A least-squares strain estimator (LSQSE) for elastography is proposed. It is shown that with
such an estimator, the signal-to-noise ratio in an elastogram (SNRe) is significantly …

Adaptive spectral strain estimators for elastography

SK Alam, FL Lizzi, T Varghese, EJ Feleppa… - Ultrasonic …, 2004 - journals.sagepub.com
In conventional elastography, internal tissue deformations, induced by external compression
applied to the tissue surface, are estimated by cross-correlation analysis of echo signals …

Theoretical derivation of SNR, CNR and spatial resolution for a local adaptive strain estimator for elastography

S Srinivasan, J Ophir, SK Alam - Ultrasound in medicine & biology, 2004 - Elsevier
Conventional techniques in elastography estimate the axial strain as the gradient of the
displacement (time-delay) estimates obtained using cross-correlation of pre-and temporally …

An adaptive strain estimator for elastography

SK Alam, J Ophir, EE Konofagou - IEEE transactions on …, 1998 - ieeexplore.ieee.org
Elastography is based on the estimation of strain due to applied tissue compression. In
conventional elastography, strain is computed from the gradient of the displacement …

2D ultrasonic elastography with lateral displacement estimation using statistics

Z Zhang, H Liu, Y Cheng - Bio-Medical Materials and …, 2014 - content.iospress.com
Ultrasound elastography is the method of obtaining relative stiffness information of biological
tissue, which plays an important role in early diagnosis. Generally, a gradient-based strain …

Trade-offs between the axial resolution and the signal-to-noise ratio in elastography

S Srinivasan, R Righetti, J Ophir - Ultrasound in medicine & biology, 2003 - Elsevier
Elastography involves tracking the ultrasonic A-mode signals before and after mechanical
compression of tissue to form a computed image of the local strains undergone by various …