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Table 1: 
Thrombolysis in Cerebral Ischemia criteria28
TICI Flow GradeCharacteristics
Grade 0No perfusion
Grade IPerfusion past the initial occlusion, but no distal branch filling
Grade IIaPartial perfusion with incomplete distal filling of <50% of the expected territory
Grade IIbPartial perfusion with incomplete distal filling of 50%–99% of the expected territory
Grade IIcNear-complete perfusion, but with delay in contrast runoff
Grade IIIFull perfusion with normal filling of distal branches in a normal hemodynamic fashion