Determination of Fetal Left Ventricular Volume Based on Two-Dimensional Echocardiography

Figure 1

Geometric assumptions for LV in the area-length method. (a) The geometric assumption for biplane area-length method. (b) The geometric assumption for single plane area-length method. L is the long-axis, and D₁ and D₂ are the minor axes taken from 4-chamber view and 2-chamber view.

(a)

(b)