MRI SECTIONAL ANATOMY OF BRAIN

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  • . Internal Carotid ArteryInternal Auditory Canal
  • Usually cystify and develop firm borders
  • New strokes usually show up as white on T2.
  • Usually cystify and develop firm borders
  • Glios are rapid growing and cause death by brain compression. They do not usually metastasize, but occasionally can following debulking surgery.
  • Some believe cranium too small for brain, Others believe the foramen magnum is malformed. Symptoms of headache, ataxia and nystagmus with progressive pressure on brain stem
  • Bi-temporal distribution is typical. Thought to occur by re-activation of herpes virus much like “cold sores” except through different nerve distribution
  • MRI SECTIONAL ANATOMY OF BRAIN

    1. 1. Sectional Anatomy of Brain Vipin kumar Msc medical imaging
    2. 2. APPROACH TO STUDY OF BRAIN ANATOMYSKULL VAULT, BASE & SUTURES.MENINGES.BRAIN PARENCHYMA.CSF SPACES & CISTERN
    3. 3. SKULL VAULT
    4. 4. MENINGES DURAMATER : ARACHNOID MATER PIAMATER outer periosteal layer & inner meningeal layer
    5. 5. MENINGEAL FOLDS DURAL REFLECTIONS DURAL VENOUS SINUSES FALX CEREBRI B/W TWO DURAMATERS TENTORIUM CEREBELLIFALX CEREBELLIDIAPHRAGMATIC SELLA
    6. 6. BRAIN FOREBRAIN (PROSENCEPHALON) Telencephalon – Cerebral hemispheres. Diencephalon - Epithalamus, Thalamus, Hypothalamus and Sub thalamus. MIDBRAIN ( MESENCEPHALON ) HINDBRAIN ( RHOMBENCEPHALON) Metencephalon – pons and cerebellum. Myelencephalon – medulla.
    7. 7. CEREBRAL HEMISPHERES Outer gray matter : the cerebral cortex. inner white matter : centrum semiovale. Divided into lobes by four important sulci: Lateral (Sylvain fissure) Central (Rolandic fissure) Parieto - occipital and Calcarine sulcus.
    8. 8. LOBES OF BRAIN
    9. 9. CORPUS CALLOSUM: Thick band of white matterconnecting two hemispheres.BASAL GANGLIA : central gray matter of telencephalonconsisting of lentiform nucleus, caudate nucleus,claustrum & amygdala.INTERNAL CAPSULE: Thick white matter band lyingbetween caudate nucleus, thalamus & lentiform nucleus.
    10. 10. Trunk/bodyGenu of cc splenium rostrum
    11. 11. MIDBRAIN (MESENCEPHALON)Smaller dorsal part - TECTUMLarger ventral part - CEREBRAL PEDUNCLESInterpeduncular fossa/cistern separate twopedunclesEach cerebral peduncle - CRUS & TEGMENTUM OF MIDBRAIN
    12. 12. Mid brain
    13. 13. HINDBRAIN PONS & MEDULLA OBLONGATA anteriorly CEREBELLUM posteriorly The fourth ventricle is present between the pons-medulla &cerebellum
    14. 14. CSF SPACES LATERAL VENTRICLES (telencephalon) Foramina of monro THIRD VENTRICLE (diencephalon) Aqueduct of sylvius(MB) FOURTH VENTRICLE (hindbrain) Foramina of luschca & magendie FINALLY INTO THE SUBARACNOID SPACE
    15. 15. SUBARACHNOID CISTERNSVENTRAL (median & paramedian)PerimedullaryPrepontineSuprasellarCp angleDORSAL (median & paramedian)Cisterna magnaAmbient CisternSupracerebellarQuadrigeminalInterhemispheric
    16. 16. . Maxillary Sinus . Nasopharynx Post Contrast sagittal T1 Weighted M.R.I. Section at the level of Foramen . Cervical Cord Magnum Cisterna Magna. Mandible Post Contrast Axial MR Image of the brain
    17. 17. Post Contrast sagittal T1 Wtd M.R.I. Section at the level of medulla Sigmoid Sinus MedullaFig. 1.2 Post Contrast Axial MR Image of the brain
    18. 18. Cavernous Sinus ICA Basilar Artery Post Contrast sagittal T1 Wtd Pons M.R.I.TMPlobe IV Ventricle Section at the level of Pons IAC MCP Vermis Cerebellar Hemisphere
    19. 19. Orbits midbrain Aqueduct of Sylvius Post Contrast sagittal T1 Wtd M.R.I. Section at the level of Mid BrainMiddle Cerebral Artery Posterior Cerebral Artery Post Contrast Axial MR Image of the brain
    20. 20. Sylvian Fissure Frontal lobe III Ventricle Post Contrast sagittal T1 Wtd M.R.I. Section at the level of the III Ventricle Occipital LobeTemporal Lobe Fig. 1.5 Post Contrast Axial MR Image of the brain
    21. 21. fontal Lobe Frontal Horn caudate Nucleus. Putamen . Internal Cerebral VeinInternal Capsule Choroid Plexus within the Post Contrast sagittal T1 Wtd occipital horn M.R.I. Section at the level of Thalamus Occipital LobeTemp Lobe Thalamus Superior Sagittal Sinus Fig. 1.6 Post Contrast Axial MR Image of the brain
    22. 22. Genu of corpus callosum Choroid plexus within the body of lateral ventricle Post Contrast sagittal T1 Wtd M.R.I. Section at the level of Corpus Callosum Splenium of corpus callosum
    23. 23. Frontal Lobe Body of the Corpus Callosum Post Contrast sagittal T1 Wtd M.R.I. Section at the level of Body of Corpus Callosum Parietal LobePost Contrast Axial MR Image of the brain
    24. 24. Frontal Lobe Post Contrast sagittal T1 Wtd M.R.I. Section above the Corpus Callosum Parietal LobePost Contrast Axial MR Image of the brain
    25. 25. Corpous collusm pons 4 th ventricle medulla Brainstem
    26. 26. Splenium of CCTegmentum of Midbrain Tectal Plate of Midbrain 4th Ventricle
    27. 27. Scalp fat Internal cerebral vein Superior sagittal sinus . Bone Inferior sagittal sinus Parietal lobeCorpus callosum Vein of Galen Occipital lobe Mass intermedia of thalamus Straight sinus . Vermis . IV ventricle Cerebellar tonsil
    28. 28. Frontal Sinus Clivus Tongue
    29. 29. Superior Saggital SinusT2 CornoalMRI Sylvian Fissure Hippocampus Temporal Lobe
    30. 30. Coronal section Falx cerebriLat ventricle Tentorium 4 th ventricle
    31. 31. Choroid plexus within lateral ventriclePosterior frontal lobe Cerebellar . Posterior temporal hemisphere lobe Tentorium Superior vermis Cerebellar tonsil Coronal Section of the Brain at the level of IV Ventricle Post Contrast Coronal T1 Weighted MRI
    32. 32. Frontal lobe Corpus callosum Frontal horn III Caudate nucleusPituitary gland Optic nerve sp Pituitary stalk Internal carotid artery np Cavernous sinus Coronal Section of the Brain at the level of Pituitary gland Post Contrast Coronal T1 Weighted MRI
    33. 33. PATHOLOGIS
    34. 34. whole R. hemispherical infarct
    35. 35. bleed into brain stem
    36. 36. Old stroke
    37. 37. New stroke in T2 flair
    38. 38. DWI showing stroke
    39. 39. accumulated blood mpgrT2 flair
    40. 40. Cerebral abscesses from endocarditis
    41. 41. Glioblastoma Multiforme
    42. 42. Giant meningioma
    43. 43. Chiari malformation
    44. 44. Herpes encephalitis
    45. 45. Hydrocephalus
    46. 46. giant unruptured MCA aneurysm
    47. 47. T2 Axial MRI with Developmental Delay and Epilepsy

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