- The most common anatomical locations for ischemic stroke are in the internal capsule and the basal ganglia.
- Look for hypodensity (i.e. darkening which suggests edema) in these parts of the brain on CT when trying to locate areas of stroke.
- Acute stroke typically takes at least 3 hours to manifest in the form of edema on Head CT. The larger the stroke, the quicker the abnormality is seen.