Imaging of the Brain

• Cranial Fossae

  A) Anterior

  B) Middle

  C) Posterior

  
• Longitudinal Fissure

  
• Parietal lobe

  
• Frontal lobe

  
• Occipital lobe

  
• Lateral fissure

  
• Central fissure

  
• Temporal lobe

  
• Cerebellum

  
• Cerebellar tonsils

  
• A Chiari malformation, previously called an Arnold-Chiari malformation, is where the lower part of the brain pushes down into the spinal canal
• Cerebellar tonsillar ectopia denotes an inferior location of the cerebellar tonsils below the margins of the foramen magnum. It, includes both minor asymptomatic tonsilar ectopia and Chiari I malformations. 
• Basion to opisthion line (McRae)

  
• Midbrain

  
• Pons

  
• Medulla Oblongata

  
• Red: Head of caudate nucleus

  
• Green: Putamen

  
• Blue: Globus Pallidus

  
• Yellow: Internal capsule

  
• Purple: External capsule

  
• Orange: Lentiform nucleus

  
• Corpus callosum

  A) rostrum

  B) Genu

  C) Body

  D) Splenium

  E) Cingulate gyrus

  
• Coronal section

  Red = cingulate gyrus

  Green = corpus callosu

  
• Red = thalamus

  
• Blue = hypothalamus

  
• Red = pituitary

  
• Green = pineal gland

  
• The pineal gland is often densely calcified on CT
• ventricular system

  A) Right lateral ventricle

  B) Left lateral ventricle

  C) septum pallucidum

  
• ventricular system

  A) 3rd ventricle

  B) foramen of munro

  
• basal cisterns

  A) ambient cistern

  B) quadrigeminal cistern

  
• ventricle system

  A) foramen of luschka

  B) prepontine cistern

  C) fourth ventricle

  
• coronal view of ventricles

  A) lateral ventricle

  B) third ventricle

  C) temporal horn

  
• Sagittal view

  A) third ventricle

  B) aqueduct

  C) fourth ventricle

  
• Risk factors for cerebral venous thrombosis

  • hormonal
  • prothrombotic
  • local/systemic
  • idiopathic
• Symptoms of cerebral venous thrombosis

  • headache
  • decreased consciousness
  • vomiting
  • vision
• CN III arises from midbrain
• CN IV is located in dorsal midbrain
• In Meckel's cave the fibres of CN V form the trigeminal ganglion