Which sequence accurately describes using the biplane Simpson method to calculate LV end-diastolic volume in 2D transthoracic echocardiography?

• A. Obtain apical 4- and 2-chamber views with the apex well visualized; trace endocardial borders at end-diastole and end-systole in each view excluding trabeculations and papillary muscles; use the disc summation in each view; average the two views and calculate EF.
• B. Obtain short-axis views and measure LV length only in diastole; multiply by a constant to estimate volumes.
• C. Use a 3D dataset to compute EDV.
• D. Trace endocardial borders at end-systole in a single view and apply a fixed geometric assumption.

Answer: (A)