MRI head axial T2 - labeling questions

Case contributed by Craig Hacking
Diagnosis not applicable

Normal MRI head (with labels)

Annotated image

The labeled structures are (excluding the correct side):

  1. cervical spinal cord
  2. posterior arch of C1
  3. odontoid process (peg or dens) of C2
  4. parotid gland
  5. intradural segment (V4) of dominant vertebral artery
  6. cisterna magna
  7. intradural segment (V4) of non-dominant vertebral artery
  8. cerebellar tonsil
  9. occipital condyle
  10. medulla oblongata
  11. lateral foramen (of Luschka)
  12. cerebellar folia
  13. fluid within mastoid air cells
  14. median foramen (of Magendie)
  15. basilar artery
  16. inferior cerebellar vermis
  17. premedullary cistern
  18. pyramid of medulla
  19. inferior cerebellar peduncle
  20. dentate nucleus of cerebellum
  21. internal acoustic (or auditory) canal
  22. cerebellopontine angle cisterna
  23. facial colliculus
  24. nodule of cerebellum
  25. middle cerebellar peduncle
  26. fourth ventricle
  27. Meckel's cave
  28. superior cerebellar peduncle
  29. cavernous segment of internal carotid artery
  30. pons
  31. intraorbital segment of optic nerve
  32. temporal lobe
  33. pituitary gland
  34. falx cerebri
  35. pituitary infundibulum
  36. temporal horn of lateral ventricle
  37. parahippocampal gyrus
  38. inferior colliculus
  39. superior cerebllar vermis
  40. suprasellar cistern
  41. optic chiasm
  42. interpeduncular cistern
  43. cerebral crus (peduncle)
  44. cerebral aqueduct (of Sylvius)
  45. superior colliculus
  46. gyrus rectus
  47. cisternal segment of optic nerve
  48. First segment of middle cerebral artery (M1)
  49. optic tract
  50. mammillary body
  51. substantia nigra
  52. red nucleus
  53. ambient cistern
  54. second segment of posterior cerebral artery (P2b)
  55. basal veins (of Rosenthal)
  56. quadrigeminal plate cistern
  57. pineal gland
  58. occipital horn of lateral ventricle
  59. great cerebral vein (of Galen)
  60. second segment of anaterior cerebral artery (A2)
  61. third ventricle
  62. interthalamic adhesion (massa intermedia)
  63. internal cerebral veins
  64. occipital lobe
  65. anterior commissure
  66. Sylvian (lateral) fissure
  67. extreme capsule
  68. insular cortex
  69. claustrum
  70. external capsule
  71. straight sinus
  72. anterior limb of internal capsule
  73. column of fornix
  74. interventricular foramen (of Monro)
  75. posterior limb of internal capsule
  76. thalamus
  77. atrium (trigone) of lateral ventricle
  78. head of caudate nucleus
  79. genu of internal capsule
  80. putamen
  81. globus pallidus
  82. crus of fornix
  83. splenium of corpus callosum
  84. genu of corpus callosum
  85. frontal horn of lateral ventricle
  86. septum pellucidum
  87. forceps major
  88. forceps minor
  89. body of lateral ventricle
  90. choroid plexus
  91. frontal lobe
  92. superior sagittal sinus
  93. body of corpus callosum
  94. centrum semiovale
  95. parietal lobe
  96. postcentral gyrus
  97. central sulcus (of Rolando)
  98. precentral gyrus
  99. interhemispheric fissure
  100. superficial cortical vein

Normal MR (without labels)

mri

The same normal brain T2 MRI without labels for reference.

Case Discussion

The labeled structures are (excluding the correct side):

  1. cervical spinal cord
  2. posterior arch of C1
  3. odontoid process (peg or dens) of C2
  4. parotid gland
  5. intradural segment (V4) of dominant vertebral artery
  6. cisterna magna
  7. intradural segment (V4) of non-dominant vertebral artery
  8. cerebellar tonsil
  9. occipital condyle
  10. medulla oblongata
  11. lateral foramen (of Luschka)
  12. cerebellar folia
  13. fluid within mastoid air cells
  14. median foramen (of Magendie)
  15. basilar artery
  16. inferior cerebellar vermis
  17. premedullary cistern
  18. pyramid of medulla
  19. inferior cerebellar peduncle
  20. dentate nucleus of cerebellum
  21. internal acoustic (or auditory) canal
  22. cerebellopontine angle cisterna
  23. facial colliculus
  24. nodule of cerebellum
  25. middle cerebellar peduncle
  26. fourth ventricle
  27. Meckel's cave
  28. superior cerebellar peduncle
  29. cavernous segment of internal carotid artery
  30. pons
  31. intraorbital segment of optic nerve
  32. temporal lobe
  33. pituitary gland
  34. falx cerebri
  35. pituitary infundibulum
  36. temporal horn of lateral ventricle
  37. parahippocampal gyrus
  38. inferior colliculus
  39. superior cerebllar vermis
  40. suprasellar cistern
  41. optic chiasm
  42. interpeduncular cistern
  43. cerebral crus (peduncle)
  44. cerebral aqueduct (of Sylvius)
  45. superior colliculus
  46. gyrus rectus
  47. cisternal segment of optic nerve
  48. First segment of middle cerebral artery (M1)
  49. optic tract
  50. mammillary body
  51. substantia nigra
  52. red nucleus
  53. ambient cistern
  54. second segment of posterior cerebral artery (P2b)
  55. basal veins (of Rosenthal)
  56. quadrigeminal plate cistern
  57. pineal gland
  58. occipital horn of lateral ventricle
  59. great cerebral vein (of Galen)
  60. second segment of anaterior cerebral artery (A2)
  61. third ventricle
  62. interthalamic adhesion (massa intermedia)
  63. internal cerebral veins
  64. occipital lobe
  65. anterior commissure
  66. Sylvian (lateral) fissure
  67. extreme capsule
  68. insular cortex
  69. claustrum
  70. external capsule
  71. straight sinus
  72. anterior limb of internal capsule
  73. column of fornix
  74. interventricular foramen (of Monro)
  75. posterior limb of internal capsule
  76. thalamus
  77. atrium (trigone) of lateral ventricle
  78. head of caudate nucleus
  79. genu of internal capsule
  80. putamen
  81. globus pallidus
  82. crus of fornix
  83. splenium of corpus callosum
  84. genu of corpus callosum
  85. frontal horn of lateral ventricle
  86. septum pellucidum
  87. forceps major
  88. forceps minor
  89. body of lateral ventricle
  90. choroid plexus
  91. frontal lobe
  92. superior sagittal sinus
  93. body of corpus callosum
  94. centrum semiovale
  95. parietal lobe
  96. postcentral gyrus
  97. central sulcus (of Rolando)
  98. precentral gyrus
  99. interhemispheric fissure
  100. superficial cortical vein

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