1. Myocardial architecture of the ventricular septum.- 2. Ventricular septal geometry: a spectrum with clinical relevance.- 3. Development of the ventricular septum.- 4. Comparative anatomy of the ventricular septum.- 5. Septal architecture in hearts with ventricular septal defects.- 6. Two-dimensional echocardiographic localization of isolated ventricular septal defects.- 7. Hemodynamic considerations in ventricular septal defect.- 8. Phonocardiographic follow-up in ventricular septal defect.- 9. Spontaneous closure or critical decrease in size of the ventricular septal defect in tricuspid atresia with normally connected great arteries: surgical implications.- 10. The ventricular septum in hearts with an atrioventricular defect.- 11. Echocardiography and angiocardiography in atrioventricular defect.- 12. Straddling and overriding valves - segmental morphology.- 13. The ventricular septum in hearts with a straddling tricuspid valve.- 14. The ventricular septum in hearts with a straddling mitral valve.- 15. Classification versus anatomy.- 16. The morphology of septal structures in univentricular hearts.- 17. Cross-sectional echocardiographic recognition of septal structures in univentricular hearts.