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  • Research Article
  • Open Access

Embedded System for Real-Time Digital Processing of Medical Ultrasound Doppler Signals

  • 1Email author,
  • 1,
  • 1,
  • 1,
  • 1,
  • 1 and
  • 1
EURASIP Journal on Advances in Signal Processing20082008:418235

https://doi.org/10.1155/2008/418235

  • Received: 1 December 2007
  • Accepted: 12 April 2008
  • Published:

Abstract

Ultrasound (US) Doppler systems are routinely used for the diagnosis of cardiovascular diseases. Depending on the application, either single tone bursts or more complex waveforms are periodically transmitted throughout a piezoelectric transducer towards the region of interest. Extraction of Doppler information from echoes backscattered from moving blood cells typically involves coherent demodulation and matched filtering of the received signal, followed by a suitable processing module. In this paper, we present an embedded Doppler US system which has been designed as open research platform, programmable according to a variety of strategies in both transmission and reception. By suitably sharing the processing tasks between a state-of-the-art FGPA and a DSP, the system can be used in several medical US applications. As reference examples, the detection of microemboli in cerebral circulation and the measurement of wall _distension_ in carotid arteries are finally presented.

Keywords

  • Open Research
  • Processing Task
  • Full Article
  • Piezoelectric Transducer
  • Doppler Signal

Publisher note

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Authors’ Affiliations

(1)
Dipartimento Elettronica e Telecomunicazioni, Università degli Studi di Firenze, Via S. Marta 3, 50139 Firenze, Italy

Copyright

© S. Ricci et al. 2008

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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