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CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
• Adult brain is formed of:
1. Cerebral hemispheres.
2. Brain stem.
3. Cerebellum.
All are covered with meninges, floating in a
fluid (CSF) & enclosing a cavity
(ventricular system).
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
Ventricular system
Components:
● 2 lateral ventricles → inside cerebral
hemispheres.
● third ventricle.
● aqueduct of Sylvius → inside brain stem.
● fourth ventricle → inside pons & medulla
oblongata.
Foramina:
Choroid plexus:
a network of blood vessels that produce
CSF.
CT brain in emergencies ... for ER doctors
Cerebral hemisphere:
Gray matter:
 Cortex
 Ganglia/nuclei
White matter
BASAL GANGLIA
♣ Islands of neural cell bodies (grey matter) within the white matter.
♣ Formed of:
1- Caudate nucleus (head, body & tail).
2- Putamen.
3- Globus pallidus.
4- Amygdaloid nuclear complex (amygdala).
5- Claustrum.
Globus pallidus + Putamen = Lentiform nucleus.
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
Stroke
Hemorrhagic Ischemic
CT brain in emergencies ... for ER doctors
Blood
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
Hyperdense MCA sign
Lost G-W matter differentiation
Lost G-W matter differentiation
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
Skull Fracture/Fissure
Skull Fracture/Fissure
Intra-axial Hematoma
CT brain in emergencies ... for ER doctors
Meninges
Extradural Hemorrhage
Extradural Hemorrhage
Extradural Hemorrhage
Extradural Hemorrhage
• Convex
• Might be associated with a fissure
• Dos not cross sutures
• Less mass effect
Extradural Hemorrhage
Extradural Hemorrhage
Subdural Hemorrhage
Subdural Hemorrhage
• Concave
• Can cross sutures
• Not associated with fissure
• More mass effect
Subdural Hemorrhage
Subdural Hemorrhage
Subdural Hemorrhage
Subdural Hemorrhage
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
Dark/
Mixed
White DarkGray
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors
CT brain in emergencies ... for ER doctors

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CT brain in emergencies ... for ER doctors