Left ventricular volume from paired biplane two-dimensional echocardiography

Area of Science:

• Cardiology
• Medical Imaging
• Echocardiography

Background:

• Accurate left ventricular volume determination is crucial for assessing cardiac function.
• Traditional methods like angiography have limitations.
• Two-dimensional echocardiography offers a non-invasive alternative.

Purpose of the Study:

• To assess the accuracy of two-dimensional echocardiography for left ventricular volume measurement.
• To compare echocardiographic results with biplane cineangiography.

Main Methods:

• 30 patients undergoing biplane left ventricular cineangiography were studied.
• A wide-angle, phased-array, two-dimensional echocardiographic system was used.
• Modified Simpson's rule calculated volumes from biplane echograms and angiograms.

Main Results:

• Excellent correlation for ejection fraction (r=0.87) and systolic volume (r=0.90).
• Modest correlation for diastolic volume (r=0.80).
• M-mode echocardiography showed poor correlation with angiography.

Conclusions:

• Two-dimensional echocardiography is a reliable method for determining left ventricular systolic volumes and ejection fraction.
• The technique is valuable even in patients with significant segmental wall motion abnormalities.
• Further refinement may improve diastolic volume accuracy.