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Table 1: Use of imaging in stroke trials
Trial Eligibility Outcome Measure Subgroup Analysis
Infarct volume 29 62 34
Edema 5 NA 0
Diagnosis/territory of infarction 9 NA 5
Vessel status 16 17 23
Ischemic penumbra 10 7 22
Perfusion status only 2 27 1
Collaterals 0 0 2
Composite/other 0 4 2
Note:—NA indicates not applicable.

	Trial Eligibility	Outcome Measure	Subgroup Analysis
Infarct volume	29	62	34
Edema	5	NA	0
Diagnosis/territory of infarction	9	NA	5
Vessel status	16	17	23
Ischemic penumbra	10	7	22
Perfusion status only	2	27	1
Collaterals	0	0	2
Composite/other	0	4	2