P1A-3 Real-Time Estimation of Lateral Displacement Using Time Domain Cross Correlation with Prior Estimates

Time domain cross correlation with prior estimates (TDPE) has been recently introduced for high frame rate real-time speckle tracking. TDPE uses prior displacement estimates of neighboring windows to speed up computation. A correlation monitoring technique is then used to verify the estimated displacement and if needed a recovery search is triggered to find the correct displacement. In this paper we extend the idea of TDPE to 2D motion tracking to estimate both the axial and the lateral component of the motion in real-time

[1]  J. Ophir,et al.  Methods for Estimation of Subsample Time Delays of Digitized Echo Signals , 1995 .

[2]  J. Ophir,et al.  Elastography: A Quantitative Method for Imaging the Elasticity of Biological Tissues , 1991, Ultrasonic imaging.

[3]  H. Ermert,et al.  A time-efficient and accurate strain estimation concept for ultrasonic elastography using iterative phase zero estimation , 1999, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[4]  J Ophir,et al.  Precision estimation and imaging of normal and shear components of the 3D strain tensor in elastography. , 2000, Physics in medicine and biology.

[5]  J. Ophir,et al.  Three-dimensional tissue motion and its effect on image noise in elastography , 1997, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[6]  Yanning Zhu,et al.  A Modified Block Matching Method for Real-Time Freehand Strain Imaging , 2002, Ultrasonic imaging.

[7]  Septimiu E. Salcudean,et al.  Motion Estimation in Ultrasound Images Using Time Domain Cross Correlation With Prior Estimates , 2006, IEEE Transactions on Biomedical Engineering.

[8]  Jonathan Ophir,et al.  Elastography: Imaging the elastic properties of soft tissues with ultrasound , 2002, Journal of Medical Ultrasonics.

[9]  J. Ophir,et al.  Elastography: Elasticity Imaging Using Ultrasound with Application to Muscle and Breast in Vivo , 1993, Ultrasonic imaging.

[10]  B. Garra,et al.  Elastography: Ultrasonic imaging of tissue strain and elastic modulus in vivo , 1996 .

[11]  J. Ophir,et al.  A new elastographic method for estimation and imaging of lateral displacements, lateral strains, corrected axial strains and Poisson's ratios in tissues. , 1998, Ultrasound in medicine & biology.