Figure 1: Diffusion-weighted imaging and computed tomography perfusion of a 71-year-old woman with right leg weakness and no neurological deterioration. Admission modified National Institutes of Health Stroke Scale was 1 for right leg weakness. Patient was treated with clopidogrel. diffusion-weighted imaging performed 28 h from last known well showed acute ischemic stroke in the left pons (a) with corresponding increased time to peak on Computed tomography perfusion (b) performed 32 h from last known well