FIG 2. A–D, Embolic infarcts at 3 days (right frontal) and 6 days (left frontal) after stroke onset. Right frontal infarct reveals marked high intensity on the diffusion-weighted image (A), and a low ADC (B) and little enhancement (C, before contrast; D, after contrast) on the T1-weighted SE images. Black rectangle indicates the ROI placed in the core region (A). Anterior portion of left frontal infarct reveals a mild high-intensity signal on the diffusion-weighted image (A) and a moderately high ADC (B) and marked enhancement (C and D) on the T1-weighted SE images. The posterior portion has extremely low intensity on the diffusion-weighted image because of hemorrhage (arrow in A). White rectangle (A) indicates the ROI placed in the anterior portion.