A method for volume estimation by two-dimensional echocardiography: examination with excised animal left ventricles

Area of Science:

• Cardiovascular Imaging
• Veterinary Cardiology
• Biomedical Engineering

Background:

• Accurate assessment of left ventricular volume is crucial for diagnosing and managing cardiovascular diseases.
• Traditional methods may have limitations in precision or accessibility.
• Novel imaging techniques are needed to improve volumetric measurements.

Purpose of the Study:

• To evaluate the applicability of a newly developed volume estimation method.
• To assess the accuracy of this method in determining left ventricular myocardial and cavity volumes.
• To validate the technique using excised animal hearts (pigs and dogs).

Main Methods:

• Utilized serial oblique-sectional images acquired via two-dimensional echocardiography.
• The echocardiograph probe was fixed and tilted stepwise to capture multiple views.
• Left ventricular contours were traced from images, digitized, and used for volume calculation.

Main Results:

• The newly developed volume estimation method demonstrated strong agreement with true volumes.
• High correlation coefficients were observed: r = 0.982 for left ventricular myocardium.
• Excellent correlation was found for left ventricular cavity volume: r = 0.989.

Conclusions:

• The novel 2D echocardiography-based method provides accurate estimations of left ventricular volume.
• The technique is applicable to both myocardial and cavity volume assessments.
• This method shows significant promise for clinical use in cardiovascular assessments.