1. Trachea
2. Right Mainstem
3. Left Mainstem
4. Left Pulmonary Artery
5. Right upper lobe pulmonary vein
6. Right Interlobar artery
7. Spine
8. Aortic knob
9. Superior vena cava
10. Ascending aorta
11. Carina
12. Right atrium
13. Right ventricle
14. Left ventricle
15. Left Hemidiaphragm
16. Right Hemidiaphragm
17. Costophrenic angle