How fat layers affect the clinical diagnosis from Doppler data

Deirdre M. King, Carmel M. Moran, Matt Hussey, Jacinta E. Browne

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Ultrasound Doppler data are routinely used in the clinical diagnosis of degree of stenosis in the renal artery. In this study the effect of fat layers on maximum velocity estimations was determined using both a Doppler string and flow phantom. Using an ATL HDI 3000 with two broadband transducers (C4-2 and L12-5), the maximum velocity was estimated for a range of velocities with and without the presence of a fat layer. The results indicate that the introduction of a fat layer has a significant effect on the overestimation of the maximum velocity when the string phantom is used. However, in the case of the flow phantom which is more physiologically representative of in vivo conditions, underestimation of the maximum velocity was observed; this may cause patients to be diagnosed as having a smaller stenosis than is actually present.

Original languageEnglish (US)
Title of host publication2007 IEEE Ultrasonics Symposium Proceedings, IUS
Number of pages4
StatePublished - 2007
Event2007 IEEE Ultrasonics Symposium, IUS - New York, NY, United States
Duration: Oct 28 2007Oct 31 2007

Publication series

NameProceedings - IEEE Ultrasonics Symposium
ISSN (Print)1051-0117


Other2007 IEEE Ultrasonics Symposium, IUS
Country/TerritoryUnited States
CityNew York, NY


  • Doppler ultrasound
  • Fat layer
  • Maximum velocity estimation
  • Refraction
  • Speed of sound

ASJC Scopus subject areas

  • Acoustics and Ultrasonics


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