Fig 1.

A, Baseline contrast-enhanced source PCT image. B, Corresponding time attenuation curves for the artery (red) and vein (blue). C, Time attenuation curves for the spot sign (yellow), PCL (green), and contralateral region of interest (purple). D, CTA with the spot sign visible (yellow arrow). E, PCCT shows PCL (green arrow) and the spot sign with extravasation (yellow arrow). F and G, PWI (F) and PS (G) map. Regions of interest encircle the contrast extravasation (spot sign and PCL) on the PWI and the entire hematoma, excluding extravasation and overlap with ventricles (intraventricular hemorrhage). Regions of interest are superimposed on the PS map and are reflected about the midline.