Figure 1

Figure 1 : 

Three-dimensional navigation system reconstruction of the triangle of Koch after Mustard surgery for d-transposition of the great arteries. A. Posterior view showing the relationship between new atrial cavities and vessels. B. Location of the triangle of Koch with sinus ostium positioned in the left side of the atrial baffle, needing left approach for atrioventricular nodal tachycardia ablation. CSO: coronary sinus ostium; H: His bundle location; LAp: left atrial appendage; LV: left ventricle; PVA: pulmonary venous atrium; RV: right ventricle; SVA: systemic venous atrium; SVC: superior vena cava.