Paraplane analysis from precordial three-dimensional echocardiographic data sets for rapid and accurate quantification of left ventricular volume and function: A comparison with magnetic resonance imaging☆,☆☆,★
Section snippets
Study population
Three-dimensional echocardiography was performed in 40 subjects with no contraindication for MRI and with adequate echocardiographic quality (assessed by checking the 3 standard apical views). Subjects included 15 normal volunteers (group A) and 25 patients with ischemic heart disease (10 with global hypokinesis and 15 with segmental wall motion abnormalities including 4 with apical aneurysm) (group B). Subjects included 31 men; age ranged from 26 to 72 years with a mean age of 52 ± 16.5 years.
Feasibility
Forty subjects of the 53 recruited in this study completed both 3-dimensional echocardiography and MRI. For 3-dimensional echocardiography, 4 patients were excluded from the study (1 for an error in calibrating the central rotational axis for image acquisition and 3 for poor echocardiographic image). For MRI, 9 patients were excluded from the study (4 for claustrophobia and 5 for incomplete MRI acquisition). All subjects included in this study were in sinus rhythm; the mean ± SD of their heart
Discussion
Calculation of LVV and EF is important for the evaluation of patients with heart disease. Segmental wall motion abnormality and left ventricular aneurysm are common complications of acute myocardial infarction. Quantification of LVV by 2-dimensional echocardiography is limited by its heterogeneous geometry, which restricts application of simple geometric models that assume symmetrical shape.24, 25, 26
Three-dimensional echocardiography provides an accurate measurement of LVV and function by the
Conclusions
The 3DE-A and 3DE-B methods have excellent correlation and close limits of agreement with MRI for calculating LVV and EF in both normal subjects and cardiac patients with segmental wall motion abnormalities and global hypokinesis. The 3DE-B method using paraplane analysis with 8 equidistant short-axis slices has similar observer variability as magnetic resonance imaging and reduces the 3-dimensional echocardiographic analysis time to 10 minutes, and therefore offers a rapid, reproducible, and
Acknowledgements
We thank Wim B. Vletter, BSc, Eric Boersma, MSc, Ron T. van Domburg, MSc, and René Frowijn for their technical assistance.
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Cited by (0)
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Dr. Nosir is supported by The Nuffic, The Hague, The Netherlands.
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Reprint requests: Youssef F.M. Nosir, MD, Thoraxcenter, Ba 302, Dr Molewaterplein 40, 3015 GD Rotterdam, The Netherlands.
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