Figure 3 Impact of argatroban on lesion volume growth in patients. (A) MRI images show acute right hemisphere infarct with middle cerebral artery stenosis in a control patient (top) and acute right hemisphere infarct with middle cerebral artery stenosis in an argatroban-treated patient (bottom). Lesion volumes were measured on a DWI (baseline) and T2FLAIR (day 7). (B) Growth of lesion volume from baseline to day 7. Lesion growth equals lesion volume measured on T2FLAIR at day 7 minus that measured on DWI at baseline. Data are presented as mean±SD. An independent t-test was conducted for each comparison. MRI – magnetic resonance imaging; DWI – diffusion weighted imaging; SD – standard deviation.