1. Case1

3. case1 1Clavicular companion shadow2Trachea3Aortic arch (knob)4Lateral border of descending aorta5Main pulmonary artery 6Azygo- esophageal line7Posterior segment of right 7th rib8Anterior segment of right 5th rib9Left lateral costophrenic sulcus10Gastric air bubble1

5. 1Humeral head2Right minor (horizontal) fissure3Right hemidiaphragm4Left hemidiaphragm5Posterior margin of inferior vena cava6Posterior pleural surface of right lung7Posterior pleural surface of left lung8Gastric air bubble9Left posterior costophrenic sulcus10Cortical margin of scapula

7. A Trachea B Right upper lobe bronchus C Left pulmonary artery D Left upper lobe bronchus E Lower lobe pulmonary vein near junction with left atrium F Lower lobe branch of the pulmonary artery G Right hemidiaphragm (continues to anterior chest wall)H Posterior margin of the inferior vena cavaI Left hemidiaphragm (ends anteriorly in contact with heart- "silhouette sign"J Left posterior costophrenic sulcus

9. A Supraclavicular fossa B Axillary recess C Companion shadow of the clavicle D Medial border of the left scapula E Right minor (horizontal) fissure F Anterior junction line G Posterior junction line H A scending aorta I Anterior cortical margin of glenoid J Left hemidiaphragm

14. .1. 1-Trachea. 2. Esophagus. 3. Trapezius muscle ). 4. Left Clavicle. 4*. Right Clavicle. 5. Subscapularis Muscle 6. Infraspinatus Muscle. 7. Supraspinatus Muscle. 8. Pectoralis Major Muscle 17.

16. . First Rib 17*. Second Rib 18. Manubrium of Sternum. 18*. Body of Sternum. 18+. Xiphoid Process of Sternum. 19. Aortic Arch 19*. Ascending Aorta. 19+. Descending Aorta. 20. Azygous Vein. 20*. Arch of the Azygous. 21. Right Brachiocephalic Vein vein. 21*. Left Brachiocephalic Vein. 22. Superior Vena Cava, 23. Thymus Gland

17. .. Pectoralis Minor Muscle it. 10. Serratus Anterior Muscle. 11. Latissimus Dorsi Muscle. 12. Erector Spinae Muscles. 13. Left Subclavian Artery. 13* Distal Subclavian Artery. 13a. Right Subclavian Artery 14. Left Common Carotid Artery. 14* Right Common Carotid Artery. 15. Left Internal Jugular Vein. 15* Right Internal Jugular Vein. 16. Scapula 9.

18. 25. Teres Minor Muscle. 26. Left Subclavian Vein/Axillary Vein. 27. Brachiocephalic Artery 28. Inferior Vena Cava. 24. Teres Major Muscle rotator cuff musclescavity. 29. Pulmonary Trunk.. 30. Right Pulmonary Artery. 30*. Left Pulmonary Artery. 31. Thoracic Duct vein. 32. Carina of Trachea.. 33. Right Ventricle. 34. Right Atrium. 35. Left Atrium. 36. Left Ventricle. 37. Right Pulmonary Vein. 38. Interventricular Septum. 39. Coronary Sinus. 40. Tricuspid valve