CT Scan Reference

Comparison: Epidural (Lens) vs Subdural (Crescent)

• Epidural: Lens shape. Stops at sutures. Middle Meningeal A.
• Subdural: Crescent shape. Crosses sutures. Bridging Veins.
• Subarachnoid: Star shape (cisterns). Berry Aneurysm.
• Intraparenchymal: Deep tissue. Hypertension.