1. CT Chest and Abdomen for Beginners Arcot Chandrasekhar, M.D. Hema Chandrasekhar, M.D.

2. Recommended way to use presentation: Use it as a slide show. Decide on one structure and follow the sequence, example aorta. Next attempt to see its relationship to other structures. Study it multiple times until you are comfortable in identifying each structure. When in doubt, follow the structure above and below and it will become evident.

3. Exercises: First go through the entire sequence. 1.Follow a xillary vein to superior vena cava entering right atrium. 2.Follow iliac veins to inferior vena cava entering right atrium. 3.Follow splenic vein to portal vein. 4.Follow aorta originating from LV to bifurcation to common iliac arteries. 5.Follow esophagus to rectum. 6.Follow trachea to RUL bronchus. 7.Follow SVC to RA to RV to main pulmonary artery and branches. Focus on one structure and use the pg up/pg down option to follow it.

4. At the level of Trachea Contrast in axillary vein Thyroid cartilage Contrast is injected in the right antecubital vein. Follow the contrast in the next few slides.

5. Clavicle Humerus Scapula Cervical spine

6. Pectoralis major Supraspinatus AC joint

7. Thyroid Gland Thyroid gland First rib

9. Apex of lung

10. Medial end of clavicle Left Rt common carotid artery Rt subclavian artery

11. Subclavian vein Right The subclavian vein joins the internal jugular vein to form the brachiocephalic vein behind the medial end of clavicle.

13. Left common carotid artery Left subclavian artery

14. The brachiocephalic vein is also called the innominate vein.

15. Sternum

16. Left brachiocephalic vein Innominate vein Because contrast was injected on the right side there is no visible contrast in left brachiocephalic vein.

17. Brachiocephalic artery Left

18. A B C A: Brachiocephalic artery B: Left common carotid artery C: Left subclavian artery

19. See how the left brachiocephalic vein is joining the right brachiocephalic vein to become the superior vena cava.

20. Contrast in the right brachiocephalic vein has been diluted by blood from the left brachiocephalic vein as they combine to form the SVC.

21. Arch of aortaAortic arch SVC

23. Mediastinal fat

24. Scapula

25. Ascending aorta Descending aorta Main pulmonary artery

26. Esophagus Azygous vein Contrast in SVC is diluted by blood from the azygous vein.

27. Left pulmonary artery Carina

28. Right pulmonary artery RUL bronchus Main pulmonary artery Left pulmonary artery

29. Left main bronchus

30. LUL division Intermediate bronchus SVC

31. Ascending aorta

32. Rt atrium

33. Rt ventricle

34. Lt atrium Pulmonary vein

37. RA RV LV LA A A: Aortic root

38. Aortic valve

40. Lt ventricle Rt ventricle

42. Interventricular septum

44. Osteophyte

45. IVC

46. Liver Heart

50. Esophagus GE junction Stomach

52. Liver Spleen Stomach

53. Lt lobe Rt lobe

54. Fissure for ligamentum teres Fissure for ligamentum venosum

55. Caudate lobe Diaphragm

57. Caudate lobe Diaphragm

58. Portal vein

59. Lt adrenal

60. Rt adrenal Portal vein

61. Surgical clips in gallbladder fossa.

62. Coeliac trunk

63. Pancreas Splenic vein The splenic vein lies in the posterior pancreatic grove and joins the superior mesenteric vein to form the portal vein.

64. Duodenal bulb Pancreas Rt renal artery IVC The right renal artery is retrocaval.

65. Small cyst in the left kidney.

66. Lt renal vein IVC Left renal vein emptying into the IVC.

68. Transverse colon Ileum

71. Kidney Right

72. Descending colon Right

75. Renal pelvis

78. Ascending colon Right colon with fecal material.

84. Abdominal aorta about to bifurcate.

85. Psoas

86. Rt common iliac artery Lt common iliac arteryIVC

87. L5

89. Left Arrows are pointing to the common iliac veins joining to form the IVC.

95. Sacrum Ilium

97. Arrows are pointing to the internal and external iliac veins joining to form the common iliac vein.

99. Sacrum Ilium

100. Rectosigmoid Sacroiliac joint

102. Diverticula in recto sigmoid Rectosigmoid

103. Arrows are pointing to air filled diverticulum and the second one is filled with residual barium from an old GI study.

107. Gluteus

108. Seminal vesicle Rectum Bladder

110. Femoral artery Femoral vein

111. Bladder Prostate Rectum

112. Femoral head Acetabulum

113. Feces in the rectum

114. Pubic symphysis

120. Ischiorectal fossa

122. Shaft of penis

126. Femur