Compare side to side
Look for grey-white differentiation
Grey is denser so appears lighter on<unk> 
Look at gyral pattern all the way around (gyri effacement indicator of increased ICP)
Findings
Tumor
May see increased hypodensity (edema)
80% visible without contrast
Atrophy
Abscess
Hemorrhagic contusion
Mass effect
Stroke
Intracranial air (skull fracture)
Hyperdense middle cerebral artery or basilar artery sign
Suggests thrombosis of vessel
Suggestive of Cerebral venous thrombosis :
Empty delta sign: dense triangle in superior sagittal sinus
Cord sign: hyperattenuated, homogeneous linear or round foci in cerebral sinus 
Vein Sign: hypoattenuated foci in the deep vein  
Grey is denser so appears lighter on<unk> 
Tumor
May see increased hypodensity (edema)
80% visible without contrast
Atrophy
Abscess
Hemorrhagic contusion
Mass effect
Stroke
Intracranial air (skull fracture)
Hyperdense middle cerebral artery or basilar artery sign
Suggests thrombosis of vessel
Suggestive of Cerebral venous thrombosis :
Empty delta sign: dense triangle in superior sagittal sinus
Cord sign: hyperattenuated, homogeneous linear or round foci in cerebral sinus 
Vein Sign: hypoattenuated foci in the deep vein  
May see increased hypodensity (edema)
80% visible without contrast
Suggests thrombosis of vessel
Empty delta sign: dense triangle in superior sagittal sinus
Cord sign: hyperattenuated, homogeneous linear or round foci in cerebral sinus 
Vein Sign: hypoattenuated foci in the deep vein
CT brain interpretation
Brain MRI
NIH Stroke Scale
Glasgow Coma Scale
Cardiac ultrasound
Prehospital protocol pediatric seizure
Lumbar puncture
Mini mental status exam