NDLI: Robust strain rate estimation using two-dimensional cubic B-splines

Content Provider	IEEE Xplore Digital Library
Author	D'hooge, J. Claus, P. Bijnens, B. Thoen, J. Van de Werf, F. Sutherland, G.R. Suetens, P.
Copyright Year	2002
Description	Author affiliation: Dept. of Electr. Eng., Univ. Hosp. Gasthuisberg, Leuven, Belgium (D'hooge, J.)
Abstract	In this study, the use of cubic B-splines for robust ultrasonic strain and strain rate estimation is demonstrated. To do this, radio-frequency data sets of cyclically compressed gelatine phantoms were acquired during M-mode imaging. Velocities were estimated by tracking temporally successive RF windows. Subsequently, a two-dimensional cubic smoothing B-spline was fitted through the velocity estimates for both depth and time. Strain rate could then be defined analytically as the cubic B-spline being the partial derivative of the velocity B-spline surface in the depth direction. Similarly, a strain B-spline surface could be defined as the analytical temporal integral of the strain rate B-spline. The method was shown to give accurate strain and strain rate estimates. Comparing this method to conventional processing, it was shown to produce less noisy strain rate and strain estimates.
Sponsorship	Ultransonics Ferroelectr., & Frequency Control Soc
Starting Page	1881
Ending Page	1884
File Size	1120305
Page Count	4
File Format	PDF
ISBN	0780375823
ISSN	10510117
DOI	10.1109/ULTSYM.2002.1192665
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-10-08
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Robustness Capacitive sensors Spline Radio frequency Imaging phantoms Myocardium Polynomials Image coding Phased arrays Biomedical imaging
Content Type	Text
Resource Type	Article

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