Figure 1From: Quantitative analysis of left atrial function in asymptomatic patients with b-thalassemia major using real-time three-dimensional echocardiography Assessment of LA volumes using RT3DE. Automatic border detection is obtained marking 5 reference points in the apical 2- and 4-chamber views (upper panel) and the LA 3-dimensional model is provided by the software (lower panel). The figure captures an end-systolic frame, from which left atrial maximum volume is derived.Back to article page