Estimation of jet flow rate from Doppler proximal velocity acceleration: Theoretical predictions from conformal mapping of inviscid flow fields

James D. Thomas*, Leonardo Rodriguez, Robert A. Levine, Arthur E. Weyman

*Corresponding author for this work

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

Abstract

The influence of finite orifice size and nonplanar global geometry on the calculation of flow rate from color Doppler echocardiography is examined. To investigate these two effects conformal mapping is used to simulate inviscid flow fields. It is found that 1) a finite orifice causes flow rate underestimation, but this error is negligible when the radius is beyond 3 orifice radii; and 2) a funnel-shaped inlet zone causes flow to be proportional to the amount of a hemisphere subtended by the funnel. These predictions are consistent with findings from previous in vitro and clinical studies.

Original languageEnglish (US)
Title of host publicationComputers in Cardiology
PublisherPubl by IEEE
Pages617-620
Number of pages4
ISBN (Print)0818622253
StatePublished - May 1 1991
EventComputers in Cardiology - Proceedings - Chicago, IL, USA
Duration: Sep 23 1990Sep 26 1990

Other

OtherComputers in Cardiology - Proceedings
CityChicago, IL, USA
Period9/23/909/26/90

ASJC Scopus subject areas

  • Software
  • Cardiology and Cardiovascular Medicine

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    Thomas, J. D., Rodriguez, L., Levine, R. A., & Weyman, A. E. (1991). Estimation of jet flow rate from Doppler proximal velocity acceleration: Theoretical predictions from conformal mapping of inviscid flow fields. In Computers in Cardiology (pp. 617-620). Publ by IEEE.