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Bio-acoustic signals from stenotic tube flow: state of the art and perspectives for future methodological development.
Linköping University, Department of Biomedical Engineering, Physiological Measurements. Linköping University, The Institute of Technology.
Linköping University, Department of Management and Engineering, Applied Thermodynamics and Fluid Mechanics. Linköping University, The Institute of Technology.
1995 (English)In: Medical and Biological Engineering and Computing, ISSN 0140-0118, E-ISSN 1741-0444, Vol. 33, no 5, 669-675 p.Article in journal (Refereed) Published
Abstract [en]

To study the degree of stenosis from the acoustic signal generated by the turbulent flow in a stenotic vessel, so-called phonoangiography was first suggested over 20 years ago. A reason for the limited use of the technique today may be that, in the early work, the theory of how to relate the spectrum of the acoustic signal to the degree of the stenosis was not clear. However, during the last decade, the theoretical basis for this and other biological tube flow applications has been clarified. Now there is also easy access to computers for frequency analysis. A further explanation for the limited diagnostic use of bio-acoustic techniques for tube flow is the strong competition from ultrasound Doppler techniques. In the future, however, applications may be expected in biological tube flow where the non-invasive, simple and inexpensive bio-acoustic techniques will have a definite role as a diagnostic method.

Place, publisher, year, edition, pages
1995. Vol. 33, no 5, 669-675 p.
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:liu:diva-116902DOI: 10.1007/BF02510784PubMedID: 8523908OAI: oai:DiVA.org:liu-116902DiVA: diva2:801438
Available from: 2015-04-09 Created: 2015-04-09 Last updated: 2017-12-04

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Ask, PerLoyd, Dan

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