MRI SECTIONAL ANATOMY OF BRAIN

MRI SECTIONAL ANATOMY OF BRAIN

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  Sectional Anatomy of Brain Vipin kumar Msc medical imaging
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  APPROACH TO STUDYOF BRAIN ANATOMY SKULL VAULT, BASE & SUTURES. MENINGES. BRAIN PARENCHYMA. CSF SPACES & CISTERN
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  SKULL VAULT
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  MENINGES  DURAMATER : ARACHNOID MATER  PIAMATER  outer periosteal layer & inner meningeal layer
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  MENINGEAL FOLDS  DURALREFLECTIONS DURAL VENOUS SINUSES  FALX CEREBRI B/W TWO DURAMATERS  TENTORIUM CEREBELLI FALX CEREBELLI DIAPHRAGMATIC SELLA
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  BRAIN  FOREBRAIN (PROSENCEPHALON)  Telencephalon – Cerebral hemispheres.  Diencephalon - Epithalamus, Thalamus, Hypothalamus and Sub thalamus.  MIDBRAIN ( MESENCEPHALON )  HINDBRAIN ( RHOMBENCEPHALON)  Metencephalon – pons and cerebellum.  Myelencephalon – medulla.
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  CEREBRAL HEMISPHERES  Outergray 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.
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  LOBES OF BRAIN
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  CORPUS CALLOSUM: Thickband of white matter connecting two hemispheres. BASAL GANGLIA : central gray matter of telencephalon consisting of lentiform nucleus, caudate nucleus, claustrum & amygdala. INTERNAL CAPSULE: Thick white matter band lying between caudate nucleus, thalamus & lentiform nucleus.
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  Trunk/body Genu of cc splenium rostrum
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  MIDBRAIN (MESENCEPHALON) Smaller dorsal part - TECTUM Larger ventral part - CEREBRAL PEDUNCLES Interpeduncular fossa/cistern separate two peduncles Each cerebral peduncle - CRUS & TEGMENTUM OF MIDBRAIN
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  Mid brain
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  HINDBRAIN  PONS &MEDULLA OBLONGATA anteriorly  CEREBELLUM posteriorly  The fourth ventricle is present between the pons-medulla & cerebellum
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  CSF SPACES  LATERALVENTRICLES (telencephalon)  Foramina of monro  THIRD VENTRICLE (diencephalon)  Aqueduct of sylvius(MB)  FOURTH VENTRICLE (hindbrain)  Foramina of luschca & magendie  FINALLY INTO THE SUBARACNOID SPACE
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  SUBARACHNOID CISTERNS VENTRAL (median& paramedian) Perimedullary Prepontine Suprasellar Cp angle DORSAL (median & paramedian) Cisterna magna Ambient Cistern Supracerebellar Quadrigeminal Interhemispheric
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  . 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
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  Post Contrast sagittalT1 Wtd M.R.I. Section at the level of medulla Sigmoid Sinus Medulla Fig. 1.2 Post Contrast Axial MR Image of the brain
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  Cavernous Sinus ICA Basilar Artery Post Contrast sagittal T1 Wtd Pons M.R.I. TMP lobe IV Ventricle Section at the level of Pons IAC MCP Vermis Cerebellar Hemisphere
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  Orbits midbrain Aqueduct of Sylvius Post Contrast sagittal T1 Wtd M.R.I. Section at the level of Mid Brain Middle Cerebral Artery Posterior Cerebral Artery Post Contrast Axial MR Image of the brain
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  Sylvian Fissure Frontal lobe III Ventricle Post Contrast sagittal T1 Wtd M.R.I. Section at the level of the III Ventricle Occipital Lobe Temporal Lobe Fig. 1.5 Post Contrast Axial MR Image of the brain
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  fontal Lobe Frontal Horn caudate Nucleus . Putamen . Internal Cerebral Vein Internal Capsule Choroid Plexus within the Post Contrast sagittal T1 Wtd occipital horn M.R.I. Section at the level of Thalamus Occipital Lobe Temp Lobe Thalamus Superior Sagittal Sinus Fig. 1.6 Post Contrast Axial MR Image of the brain
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  Genu of corpuscallosum 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
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  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 Lobe Post Contrast Axial MR Image of the brain
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  Frontal Lobe Post Contrast sagittal T1 Wtd M.R.I. Section above the Corpus Callosum Parietal Lobe Post Contrast Axial MR Image of the brain
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  Corpous collusm pons 4 th ventricle medulla Brainstem
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  Splenium of CC Tegmentumof Midbrain Tectal Plate of Midbrain 4th Ventricle
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  Scalp fat Internal cerebral vein Superior sagittal sinus . Bone Inferior sagittal sinus Parietal lobe Corpus callosum Vein of Galen Occipital lobe Mass intermedia of thalamus Straight sinus . Vermis . IV ventricle Cerebellar tonsil
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  Frontal Sinus Clivus Tongue
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  Superior Saggital Sinus T2Cornoal MRI Sylvian Fissure Hippocampus Temporal Lobe
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  Coronal section Falx cerebri Lat ventricle Tentorium 4 th ventricle
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  Choroid plexus within lateral ventricle Posterior 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
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  Frontal lobe Corpus callosum Frontal horn III Caudate nucleus Pituitary 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
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  PATHOLOGIS
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  whole R. hemisphericalinfarct
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  bleed into brainstem
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  Old stroke
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  New stroke inT2 flair
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  DWI showing stroke
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  accumulated blood mpgr T2 flair
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  Cerebral abscesses fromendocarditis
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  Glioblastoma Multiforme
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  Giant meningioma
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  Chiari malformation
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  Herpes encephalitis
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  Hydrocephalus
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  giant unruptured MCAaneurysm
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  T2 Axial MRI with Developmental Delay and Epilepsy