• PET-derived measures of TSPO radiotracer to track the extent and location of inflammation in the brain after stroke and peri-infarct areas (thalamus, hippocampi, amygdalae, midbrain) at day 90 (compared with day 15)• To explore whether the most inflamed areas in brain undergo the most post-stroke damage correspond to neurological and cognitive deficits (via measure blood inflammatory markers and genetic test for TSPO marker). The gene discussed is TSPO; the disease is Stroke.