Determination of left ventricular volume by two-dimensional echocardiography: comparison with magnetic resonance imaging.
Left ventricular volume was determined in 12 healthy volunteers using a newly developed two-dimensional echocardiographic delineation method. The results were compared with those of magnetic resonance imaging, which served as the method of reference. Left ventricular end-diastolic volume was 123 +/- 12 ml, echocardiographically defined, and 121 +/- 12 ml calculated with magnetic resonance imaging. End-systolic volume was 41 +/- 7 ml on echocardiography and 37 +/- 6 ml on magnetic resonance imaging. Left ventricular ejection fraction was 67 +/- 4%, echocardiographically defined, and 70 +/- 5%, calculated with magnetic resonance imaging. There was no statistical difference for any of the measured parameters. Interstudy and inter-observer variability was minimal. In conclusion, in healthy volunteers left ventricular volume was accurately defined, using this newly developed two-dimensional echocardiographic delineation method. During endocardial delineation a dynamic display is continuously available on a second window, allowing precise visual edge-detection. Moreover, corrections can be made easily and quickly. These two advantages enhance the accuracy of the method, even in cases of poor echogenicity.
Herregods
M C
MC
Department of Cardiology, University Hospital Gasthuisberg, Leuven, Belgium.
De Paep
G
G
Bijnens
B
B
Bogaert
J G
JG
Rademakers
F E
FE
Bosmans
H T
HT
Bellon
E P
EP
Marchal
G J
GJ
Baert
A L
AL
Van de Werf
F
F
D000328:Adult; D002306:Cardiac Volume / Q000502:physiology*; D003971:Diastole / Q000502:physiology; D004452:Echocardiography / Q000295:instrumentation*; D006352:Heart Ventricles / Q000000981:diagnostic imaging*; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation*; D008279:Magnetic Resonance Imaging; D008297:Male; D012016:Reference Values; D013599:Systole / Q000502:physiology; D016277:Ventricular Function, Left / Q000502:physiology*