Table 2.

Categories used to classify articles according to degree of influence on decision making

1Perfusion used to guide treatment
2Predict clinical outcome (suggestive evidence that PWI can help triage patients)
3Predict final infarct size
4Determine effects of therapy on perfusion abnormalities
5Characterize infarct types or to better understand infarct-like processes
6As a comparison with DWI but no outcome measure
7Compare perfusion with an imaging technique other than MR
8Solely as an entry criterion
9Although perfusion data were recorded, analysis of perfusion data was not a goal of the study
  • Note:—PWI indicates perfusion-weighted imaging; DWI, diffusion-weighted imaging.