Fig 7. Graph shows patients’ PWI abnormalities (hypoperfusion [Hypo], hyperperfusion [Hyper], venous congestion [lswb]Cong], or Normal) found in the different AIF estimation methods. Note that PWI abnormalities may be bilateral. All PWI results varied among the different methods except for 14 patients who had the same PWI abnormalities regardless of the AIF estimation method.