Send to

Choose Destination
See comment in PubMed Commons below
Am J Physiol Heart Circ Physiol. 2010 May;298(5):H1626-32. doi: 10.1152/ajpheart.00713.2009. Epub 2010 Feb 19.

A real-time device for converting Doppler ultrasound audio signals into fluid flow velocity.

Author information

  • 1Heart & Vascular Institute, Penn State-Hershey, 500 University Drive, Hershey, PA 17033, USA.


A Doppler signal converter has been developed to facilitate cardiovascular and exercise physiology research. This device directly converts audio signals from a clinical Doppler ultrasound imaging system into a real-time analog signal that accurately represents blood flow velocity and is easily recorded by any standard data acquisition system. This real-time flow velocity signal, when simultaneously recorded with other physiological signals of interest, permits the observation of transient flow response to experimental interventions in a manner not possible when using standard Doppler imaging devices. This converted flow velocity signal also permits a more robust and less subjective analysis of data in a fraction of the time required by previous analytic methods. This signal converter provides this capability inexpensively and requires no modification of either the imaging or data acquisition system.

[PubMed - indexed for MEDLINE]
Free PMC Article
PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for HighWire Icon for PubMed Central
    Loading ...
    Write to the Help Desk