Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Review
. 2000 Nov;84 Suppl 2(Suppl 2):II2-6.
doi: 10.1136/heart.84.suppl_2.ii2.

Three dimensional colour Doppler echocardiography for the characterisation and quantification of cardiac flow events

T Irvine  1 , X N Li, R Rusk, D Lennon, D J Sahn, A Kenny
Affiliations
Review

Three dimensional colour Doppler echocardiography for the characterisation and quantification of cardiac flow events

T Irvine et al. Heart. 2000 Nov.
No abstract available

PubMed Disclaimer

Figures

Figure 1
Figure 1
(A) Acquisition of multiple 2D images by rotation of multiplane transoesophageal probe through 180°. (B) Assimilation of multiple 2D imaging planes to generate a 3D volume of data. Coloured lines show typical cutplanes within the dataset. (C) Example of 3D dataset with demonstration of cutplanes.
Figure 2
Figure 2
(A) Grey scale reconstruction of twin regurgitant jets extending upwards into the cavity of the left atrium. (B) Digital 3D colour Doppler rendering of a flow convergence region (in vitro acquisition).
Figure 3
Figure 3
Localisation of the vena contracta in the 3D dataset (in vitro acquisition). Colour Doppler flow data have been acquired parallel to flow. (A) and (C) show direction of flow from top to bottom in the two. (D) A perpendicular (blue cutplane) cut through the narrowest portion of the regurgitant jet, the vena contracta.
Figure 4
Figure 4
(A) Example of laminar flow pattern, such as might be encountered in the ventricular outflow tracts or the great vessels. (B) 3D reconstruction of a laminar flow profile (in vitro acquisition).
Figure 5
Figure 5
Identification of the vena contracta in a case of anterior mitral valve leaflet prolapse. In spite of the eccentricity of the jet, the cutplanes can still be manipulated to produce a cross section of the vena contracta (bottom left panel). It is then a simple process to measure its area. This should give an approximation of the regurgitant orifice area.
Figure 6
Figure 6
Calculation of the flow convergence region surface area in the 3D dataset. (A) is a magnified view of (B). A wire model framework has been fitted to the surface of the flow convergence region. Surface area computations are made using this model. Note that no geometric assumptions are involved in the measurement of the surface area.
Figure 7
Figure 7
Computation of instantaneous flow rate from a digital 3D Doppler dataset, acquired from an in vitro tube model of laminar flow. The colour flow cross section is identified within the dataset (A), (B). The computer performs a spatial integration of the individual velocity vectors contained within the flow cross-section (C) to generate an instantaneous flow rate.
See this image and copyright information in PMC

Similar articles

See all similar articles

Cited by

References

    1. Br Heart J. 1995 Jul;74(1):4-6 - PubMed
    1. Circulation. 1996 Feb 1;93(3):594-602 - PubMed
    1. J Am Coll Cardiol. 1988 Nov;12(5):1344-53 - PubMed
    1. Am Heart J. 1997 Feb;133(2):221-9 - PubMed
    1. Circulation. 1997 Feb 18;95(4):932-9 - PubMed

MeSH terms