Figure 1From: Which method of left atrium size quantification is the most accurate to recognize thromboembolic risk in patients with non-valvular atrial fibrillation? Echocardiographic parameters used to calculate the left atrial volumes. Legend: A1 - LA area in 4C view; A2 - LA area in 2C view; D1 - LA AP diameter; D2 - medial–lateral diameter; D3 - superior-inferior diameter in 4C view; D4 - superior-inferior diameter in 2C view.Back to article page