Advancing intravascular palpography towards clinical application

The quality of palpograms produced using multi-step averaging is superior compared to those created using a single-step approach. The length of the kernel used in both signal-processing strategies should be chosen carefully, since this will have a direct bearing on the quality of the elasticity images that are produced. Despite the apparent advantage gained when multi-step averaging is employed, this strain estimation approach has the distinct disadvantage of been computationally very demanding, therefore we recommend that in situations were real-time assessment of vessel elasticity is desired that palpograms should be created using the single step approach.

[1]  E.I. Cespedes,et al.  Intravascular ultrasonic palpation: assessment of local wall compliance , 1997, 1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118).

[2]  N Bom,et al.  Characterization of plaque components with intravascular ultrasound elastography in human femoral and coronary arteries in vitro. , 2000, Circulation.

[3]  M.A. Lubinski,et al.  Speckle tracking methods for ultrasonic elasticity imaging using short-time correlation , 1999, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[4]  M. Doyley,et al.  Evaluation of an iterative reconstruction method for quantitative elastography , 2000 .

[5]  C L de Korte,et al.  Echo decorrelation from displacement gradients in elasticity and velocity estimation , 1999, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[6]  R S Reneman,et al.  Assessment of the arterial distension waveform using Doppler signal processing , 1992, Journal of hypertension. Supplement : official journal of the International Society of Hypertension.

[7]  T. Varghese,et al.  A theoretical framework for performance characterization of elastography: the strain filter , 1997, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[8]  J.R. Crowe,et al.  Displacement and strain imaging of coronary arteries with intraluminal ultrasound , 1996, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[9]  W. Karl,et al.  The application of echo-tracking methods to endothelium-dependent vasoreactivity and arterial compliance measurements. , 1996, Ultrasound in medicine & biology.

[10]  L. Wilson,et al.  Spectral tissue strain: a new technique for imaging tissue strain using intravascular ultrasound. , 1994, Ultrasound in medicine & biology.

[11]  L. Gibson,et al.  Static circumferential tangential modulus of human atherosclerotic tissue. , 1994, Journal of biomechanics.

[12]  C von Birgelen,et al.  Intravascular elastography: principles and potentials. , 1997, Seminars in interventional cardiology : SIIC.