CT angiogram abdomen/pelvis axial - labeling questions

Case contributed by Assoc Prof Craig Hacking

Normal CTA (with labels)

Annotated image

The labeled structures are (excluding the correct side):

  1. descending thoracic aorta
  2. left atrium
  3. internal thoracic (mammary) artery
  4. right ventricle
  5. azygos vein
  6. left ventricle
  7. posterior intercostal artery
  8. coronary sinus
  9. right atrium
  10. posterior intercostal artery
  11. distal segment of right coronary artery
  12. left gastro-epiploic (gastro-omental) artery
  13. right hepatic vein
  14. intrahepatic segment of inferior vena cava
  15. middle hepatic vein
  16. left hepatic vein
  17. left portal vein
  18. left hepatic artery
  19. right portal vein
  20. superior epigastric artery
  21. right hepatic artery
  22. splenic artery
  23. left gastric artery
  24. splenic vein
  25. celiac trunk
  26. common hepatic artery proper
  27. right gastric artery
  28. common hepatic artery
  29. gastroduodenal artery
  30. portal vein
  31. suprarenal segment of inferior vena cava
  32. superior mesenteric artery
  33. left renal artery
  34. left renal vein
  35. superior pancreaticoduodenal artery
  36. right gastro-epiploic (gastro-omental) artery
  37. inferior pancreaticoduodenal artery
  38. accessory left renal artery (variant)
  39. right renal artery
  40. superior mesenteric vein
  41. right renal vein
  42. inferior mesenteric vein
  43. right colic artery (shared trunk with MCA, variant)
  44. middle colic artery (shared trunk with RCA, variant)
  45. left colic artery
  46. infrarenal segment of inferior vena cava
  47. jejunal artery (one of several)
  48. abdominal aorta
  49. lumbar artery
  50. inferior mesenteric artery
  51. ileal artery (one of several)
  52. median sacral artery
  53. ileocolic artery
  54. sigmoid artery (one of several)
  55. right common iliac artery
  56. left common iliac vein
  57. right common iliac vein
  58. left common iliac artery
  59. ileal artery (one of several)
  60. sigmoid artery (one of several)
  61. external iliac artery
  62. iliolumbar artery
  63. internal iliac artery
  64. superior rectal artery
  65. posterior division of internal iliac artery
  66. anterior division of internal iliac artery
  67. superior gluteal artery
  68. inferior epigastric artery
  69. deep circumflex iliac artery
  70. inferior gluteal artery (off posterior division of IIA, variant)
  71. obliterated umbilical artery
  72. inferior epigastric artery
  73. superficial circumflex iliac artery
  74. aberrant obturator artery (off inferior epigastric artery, variant)
  75. internal pudendal artery
  76. common femoral artery
  77. internal pudendal artery in pudendal canal
  78. inferior rectal artery
  79. muscular perforator branch of profunda femoris artery
  80. superficial femoral artery
  81. profunda femoris artery

Normal CTA (without labels)

CT

The same normal abdominopelvic CT angiogram without labels for reference.

Case Discussion

The labeled structures are (excluding the correct side):

  1. descending thoracic aorta
  2. left atrium
  3. internal thoracic (mammary) artery
  4. right ventricle
  5. azygos vein
  6. left ventricle
  7. posterior intercostal artery
  8. coronary sinus
  9. right atrium
  10. posterior intercostal artery
  11. distal segment of right coronary artery
  12. left gastro-epiploic (gastro-omental) artery
  13. right hepatic vein
  14. intrahepatic segment of inferior vena cava
  15. middle hepatic vein
  16. left hepatic vein
  17. left portal vein
  18. left hepatic artery
  19. right portal vein
  20. superior epigastric artery
  21. right hepatic artery
  22. splenic artery
  23. left gastric artery
  24. splenic vein
  25. celiac trunk
  26. common hepatic artery proper
  27. right gastric artery
  28. common hepatic artery
  29. gastroduodenal artery
  30. portal vein
  31. suprarenal segment of inferior vena cava
  32. superior mesenteric artery
  33. left renal artery
  34. left renal vein
  35. superior pancreaticoduodenal artery
  36. right gastro-epiploic (gastro-omental) artery
  37. inferior pancreaticoduodenal artery
  38. accessory left renal artery (variant)
  39. right renal artery
  40. superior mesenteric vein
  41. right renal vein
  42. inferior mesenteric vein
  43. right colic artery (shared trunk with MCA, variant)
  44. middle colic artery (shared trunk with RCA, variant)
  45. left colic artery
  46. infrarenal segment of inferior vena cava
  47. jejunal artery (one of several)
  48. abdominal aorta
  49. lumbar artery
  50. inferior mesenteric artery
  51. ileal artery (one of several)
  52. median sacral artery
  53. ileocolic artery
  54. sigmoid artery (one of several)
  55. right common iliac artery
  56. left common iliac vein
  57. right common iliac vein
  58. left common iliac artery
  59. ileal artery (one of several)
  60. sigmoid artery (one of several)
  61. external iliac artery
  62. iliolumbar artery
  63. internal iliac artery
  64. superior rectal artery
  65. posterior division of internal iliac artery
  66. anterior division of internal iliac artery
  67. superior gluteal artery
  68. inferior epigastric artery
  69. deep circumflex iliac artery
  70. inferior gluteal artery (off posterior division of IIA, variant)
  71. obliterated umbilical artery
  72. inferior epigastric artery
  73. superficial circumflex iliac artery
  74. aberrant obturator artery (off inferior epigastric artery, variant)
  75. internal pudendal artery
  76. common femoral artery
  77. internal pudendal artery in pudendal canal
  78. inferior rectal artery
  79. muscular perforator branch of profunda femoris artery
  80. superficial femoral artery
  81. profunda femoris artery

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