NDLI: Possible application of spectral analysis techniques on ultrasonic echo-traces improved for studying changes in blood vessel walls

Content Provider	IEEE Xplore Digital Library
Author	Bazan, I. Negreira, C. Ramos, A. Calas, H. Gomez, T.E. Ramirez, A. de la Rosa, J.M. Gallegos, F.J.
Copyright Year	2012
Description	Author affiliation: Lab. “Ultrasonic Signals, Systems & Technologies” (CSIC). Madrid. Spain (Ramos, A.; Calas, H.; Gomez, T.E.) \|\| Dpto. Materiales, Fac. Ciencias, Universidad de la Republica. Montevideo. Uruguay (Negreira, C.) \|\| Superior School of Mechanical and Electrical Engineering - Instituto Politécnico Nacional, México D.F., México (Bazan, I.; Ramirez, A.; de la Rosa, J.M.; Gallegos, F.J.)
Abstract	Parametric algorithms previously developed by authors for spectral evaluation of biological multi-echo waveforms are adapted and improved here in order to achieve a more elevated frequency resolution. These results permit to undertake viability studies around the possible application of a new auto-regressive spectral technique to estimate physical properties like wall thickness changes in blood vessels, with accuracy enough. These difficult and sophisticated measurements in vessels have an increasing interest as tools to estimate basic parameters for calculating elastic properties in the vessel walls. Laboratory thickness data obtained for a latex phantom (mimicking vessel properties) are shown, giving a promising expectative for this improved estimation technique in blood vessels characterization, a diagnostic tool nowadays of growing attention by the researches. In fact, the results suggest clear improvement in spatial resolution, over the classic cross-correlation and non-parametric techniques, to estimate delays between pulsed signals. But, still further efforts and rigorous analyses of ultrasonic echo-signals acquired from well-controlled sanguineous tissues phantoms are needed in order to optimize the potential resolution of this new thickness measurement procedure and also to evaluate its possible clinic limitations.
Starting Page	111
Ending Page	116
File Size	259845
Page Count	6
File Format	PDF
ISBN	9781467311359
e-ISBN	9781467311342
DOI	10.1109/PAHCE.2012.6233453
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-03-26
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Spectral estimation Correlation blood vessel Estimation Acoustics Electron tubes Spatial resolution ultrasonic echo-signal Delay Spectral analysis elastic properties
Content Type	Text
Resource Type	Article

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