Right anterior view. The septum is perpendicular to our view as it is in the traditional RAO projection. The left anterior descending giving the first septal artery is demonstrated. It courses a few millimeters in depth from the right side of the inter ventricular septum.
The septal leaflet of the tricuspid valve, the inferior leaflet and the coronary sinus are also seen.
1. left anterior descending artery
2. Moderator band.
3. Muscle of Lancisi.
Cs) coronary sinus
Tv) septal leaflet of the tricuspid valve.

Image #50