Choosing Apical Long-axis Instead of Two-chamber View Gives More Accurate Biplane Echocardiographic Measurements of Left Ventricular Ejection Fraction: A Comparison with Magnetic Resonance Imaging

2005 ◽  
Vol 18 (10) ◽  
pp. 1044-1050 ◽  
Author(s):  
Siri Malm ◽  
Einar Sagberg ◽  
Henrik Larsson ◽  
Terje Skjærpe
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Left Ventricular Ejection Fraction ◽  
Ejection Fraction ◽  
Left Ventricular ◽  
Ventricular Ejection ◽  
Left Ventricular Ejection ◽  
Resonance Imaging ◽  
Ventricular Ejection Fraction ◽  
Chamber View

Tissue motion annular displacement of the mitral valve using two-dimensional speckle tracking echocardiography predicts the left ventricular ejection fraction in normal children

2013 ◽  
Vol 24 (4) ◽  
pp. 640-648 ◽  
Author(s):  
David E Black ◽  
Jen Bryant ◽  
Charles Peebles ◽  
Keith M Godfrey ◽  
Mark Hanson ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Mitral Valve ◽  
Left Ventricular Ejection Fraction ◽  
Ejection Fraction ◽  
Left Ventricular ◽  
Ventricular Ejection ◽  
Left Ventricular Ejection ◽  
Resonance Imaging ◽  
Ventricular Ejection Fraction

AbstractBackground: The gold standard for determining the left ventricular ejection fraction is cardiac magnetic resonance imaging. Other parameters for determining the ejection fraction such as M-mode echocardiography are operator-dependant and often inaccurate. Assessment of the displacement of the mitral valve annulus using two-dimensional speckle tracking echocardiography may provide an accurate and simple method of determining the left ventricular ejection fraction in children. Method: We retrospectively studied 70 healthy 9-year-old children with no history of cardiovascular disease who had been assessed using cardiac magnetic resonance imaging and two-dimensional transthoracic echocardiography. Mitral displacement was determined using the tissue motion annular displacement (TMAD) feature of Philips QLAB version 9. The midpoint displacement of the mitral valve was calculated, and the predicted left ventricular ejection fraction was compared with magnetic resonance imaging-derived and M-mode-derived ejection fractions. Results: The mean ejection fraction derived from magnetic resonance imaging (64.5 (4.6)) was similar to that derived from the TMAD midpoint (60.9 (2.7), p = 0.001) and the M-mode (61.9 (7), p = 0.012). The TMAD midpoint correlated strongly with the magnetic resonance imaging-derived ejection fraction (r = 0.69, p < 0.001), as did the predicted fraction (r = 0.67, p < 0.001). The M-mode ejection fraction showed a poor linear correlation with both magnetic resonance imaging-derived and TMAD-derived fractions (r = 0.33 and 0.04, respectively). Conclusion: TMAD of the mitral valve is a simple, effective, and highly reproducible method of assessing the ejection fraction in normal children. It shows a strong linear correlation with magnetic resonance imaging-derived ejection fraction and is superior to M-mode-derived ejection fractions.

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