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Bio-acoustic signals from stenotic tube flow: state of the art and perspectives for future methodological development.
Linköpings universitet, Institutionen för medicinsk teknik, Fysiologisk mätteknik. Linköpings universitet, Tekniska högskolan.
Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Mekanisk värmeteori och strömningslära. Linköpings universitet, Tekniska högskolan.
1995 (engelsk)Inngår i: Medical and Biological Engineering and Computing, ISSN 0140-0118, E-ISSN 1741-0444, Vol. 33, nr 5, s. 669-675Artikkel i tidsskrift (Fagfellevurdert) 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.

sted, utgiver, år, opplag, sider
1995. Vol. 33, nr 5, s. 669-675
HSV kategori
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URN: urn:nbn:se:liu:diva-116902DOI: 10.1007/BF02510784PubMedID: 8523908OAI: oai:DiVA.org:liu-116902DiVA, id: diva2:801438
Tilgjengelig fra: 2015-04-09 Laget: 2015-04-09 Sist oppdatert: 2017-12-04

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