Radiological anatomy of brain

1. RADIOANATOMY OF BRAIN
Dr HARSHITH GOWDA K .B
JR 1 MD RADIOLOGY
JNMC WARDHA

2. ANATOMICAL PLANES OF BRAIN
1.CORONAL PLANE
2.AXIAL PLANE
3.SAGITAL PLANE

4. CRANIAL MENINGEAL LAYERS

5. MENINGEAL SPACES

6. Grey and white matter
WHITE MATTER
GREY MATTER

7. SULCI AND GYRI
GYRI -convolutions of cerebral cortex
(grey matter).
SULCI -spaces between gyri.

8. Cerebellar Hemisphere Cerebellar Vermis

9. • Most inferior portion of the brain
serving as transitional segment
between the spinal cord and
pons.
• Bound anteriorly by the basilar
portion of occipital bone and
posteriorly by the cerebellar
hemispheres.
MEDULLA

10. Pons
Segment of brainstem between the medulla and midbrain.

11. MIDBRAIN
Part of brainstem just above pons at junction of middle and posterior cranial fossa.

12. • Lateral ventricular are paired structures and part of the ventricular system in the brain
• They are larger than third or fourth ventricle and each has three horns that project into
the lobe after which they are named
• Anterior/frontal horn: frontal lobe
• Posterior/occipital horn :occipital lobe
• Inferior/temporal horn:temporal lobe
• CSF is produced in the choroid plexus situated within the ventricles and exits along the
intraventricular foramen(of Monro) to the third ventricle.
LATERAL VENTRICLES

14. BodyofLateralVentricle Anterior horn of Lateral Ventricle

15. OCCIPITAL HORNTEMPORAL HORN

16. THIRD VENTRICLE FOURTH VENTRICLE
Midline – flanked bilaterally by the thalamus. Anterior to the cerebellum and posterior to the
pons.

17. T2-W MRI

18. Fornix

19. Septum Pellucidum

20. CEREBRAL PEDUNCLES
Identifiable on CT as the two half-moon structures of the midbrain separated by the interpeduncular
cistern.

21. Pituitary Gland
Lies within the sella tursica, On axial CT it appears posterior to the anterior clinoids and anterior to the
dorsum sellae.

22. Pineal Gland
Most commonly seen calcified on CT attached to the posterior part of the roof of the third ventricle.

23. HYPOTHALAMUS
Mass of gray matter located just below the thalamus on either side of the third ventricle.

24. AMYGDALA
Mass of gray matter in the anterior medial portion of the temporal lobe.

25. Hippocampus
Mass of gray matter seen on CT posterior to temporal horn at level of midbrain.

26. SUBARCHANOID CISTERN
INTERPEDUNCULAR CISTERN SUPRASELLAR CISTERN

27. QUADRIGEMINAL CISTERN

28. INTERNAL CAPSULE
ANTERIOR LIMB GENU POSTERIOR LIMB

29. HEAD OF CAUDATE-Kidney-shaped
mass of gray matter.
BODY OF CAUDATE - Cresecent -shaped
structure lateral to body of lateral ventricles.
CAUDATE NUCLEUS

30. CORPUS CALLOSUM
CORPUS CALLOSUM
GENU Splenium

31. Thalamus

32. Lentiform nucleus
Biconvex gray matter structure lying
between the internal and external capsule.

33. External Capsule
Thin strip of white matter lying
between the putamen and
claustrum.

34. CORONA RADIATA
Bilateralwhitematterportionofbrainreferredatupperleveloflateralventricular.

36. INSULA SYLVIAN FISSURE
Fissure extending laterally between the frontal and
temporal lobes and posteriorly between the
temporal and parietal lobes.

37. Centrum Semiovale
Bilateral white matter portion of
brain above the level of the lateral
ventricles .

38. TENTORIUM CEREBELLI
Dural membrane separating the cerebellum from the cerebrum.

39. LOBES OF BRAIN

40. DURAL FOLDS -FALX CEREBRI
Vertical midline partition of dura mater which lies in the longitudinal fissure and separates the
cerebral hemispheres .

41. PRECENTRAL SULCUS
A furrow anterior to the central sulcus -
between the precentral and central sulci
lies the precentral gyrus (important
motor area).

42. POST CENTRAL SULCUS
A furrow posterior to the central sulcus -
between the central and postcentral sulci lies
the postcentral gyrus (important sensory
area).

43. CENTRAL SULCUS
A deep furrow
located on the upper
lateral surface of the
cerebral hemisphere
 Separates the
frontal and parietal
lobes .

44. T1 weighted MRI

45. ARTERIAL SUPPLY OF BRAIN

47. MR ANGIOGRAPHY -

48. VENOUS SUPPLY OF BRAIN

49. Superior
Sagittal sinus
Superior Sagittal Sinus

50. TRANSVERSE SINUS SIGMOID SINUS CONFLUENCE OF SINUSES

59. THANK YOU