Copyright © 1998 by the European Society of Cardiology.
Left ventricular ejection fraction in children measured by three-dimensional echocardiography using a new transthoracic integrated 3D-probe
A comparison with equilibrium radionuclide angiography
a Services de Cardiologie Pédiatrique, Hôpital Necker/Enfants-malades, Paris, France
b Services de Médecine Nucléaire, Hôpital Necker/Enfants-malades, Paris, France
accepted March 30, 1998
Background Three-dimensional echocardiography allows calculation of left ventricular ejection fraction without geometric assumption on the ventricular shape. Our aim was to validate this technique in a paediatric population with distorted ventricles.
Methods Twenty-one patients aged 6 months to 17 years underwent equilibrium radionuclide angiography and three-dimensional echocardiography. Fourteen patients had dilated cardiomyopathy and seven had univentricular hearts. A new, easy to handle, transthoracic rotational probe was used and motion artefacts were limited during the rotation (3° intervals with ECG and respiratory gating). Left ventricular volumes and ejection fraction were calculated using the Simpson’s rule with 12 slices.
Results Three-dimensional echocardiography correlated well with equilibrium radionuclide angiography for ejection fraction measurement (r=0·90; the mean difference between the two methods being 3·8±6%). Intra-observer and inter-observer variabilities for 3D echocardiography were 2·4% and 4·5%.
Conclusions Three-dimensional echocardiography is an accurate, non-invasive, and reproducible methods to measure left ventricular ejection fraction in children.
Key Words: Three-dimensional echocardiography • left ventricular ejection fraction • children
f1 Correspondence: Dr Philippe Acar, Service de Cardiologie Pédiatrique, Hôpital Necker Enfants-malades 149, rue de Sèvres 75743 Paris cedex 15, France.
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