Application of wavelets in Doppler ultrasound

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Sensor Review

ISSN: 0260-2288

Online from: 1981

Subject Area: Electrical & Electronic Engineering

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Document Information:
Title:	Application of wavelets in Doppler ultrasound
Author(s):	P.I.J. Keeton, (Research student, Department of Engineering, University of Leicester, Leicester, UK. Tel: 0116 252 5321; Fax: 0116 252 2618), F.S. Schlindwein, (Lecturer in the Department of Engineering, University of Leicester, Leicester, UK. Tel: 0116 252 5321; Fax: 0116 252 2618)
Citation:	P.I.J. Keeton, F.S. Schlindwein, (1997) "Application of wavelets in Doppler ultrasound", Sensor Review, Vol. 17 Iss: 1, pp.38 - 45
Keywords:	Doppler ultrasound, Filter banks, Wavelets
Article type:	General review
DOI:	10.1108/02602289710163355 (Permanent URL)
Publisher:	MCB UP Ltd
Abstract:	Provides an introduction into wavelets and illustrates their application with two examples. The wavelet transform provides the analyst with a scaleable time-frequency representation of the signal, which may uncover details not evidenced by conventional signal processing techniques. The signals used in this paper are Doppler ultrasound recordings of blood flow velocity taken from the internal carotid artery and the femoral artery. Shows how wavelets can be used as an alternative signal processing tool to the short time Fourier transform for the extraction of the time-frequency distribution of Doppler ultrasound signals. Implements wavelet-based adaptive filtering for the extraction of maximum blood velocity envelopes in the post processing of Doppler signals.