"The modified treatment in cerebral infarction (mTICI) score was developed from the original thrombolysis in cerebral infarction (TICI) scale by a consensus group in 2013 1. The recommendations included a name change to better reflect the increasing use of endovascular clot retrieval for ischaemic stroke, and simplification of the TICI 2 component to less than half of the target vascular territory (mTICI 2A) or more than half (mTICI 2B). Since its initial description, mTICI 2C has also been added to the score 5."
"grade 2A: antegrade reperfusion of less than half of the occluded target artery previously ischaemic territory (e.g. in one major division of the middle cerebral artery (MCA) and its territory)"
"grade 2B: antegrade reperfusion of more than half of the previously occluded target artery ischaemic territory (e.g. in two major divisions of the MCA and their territories)"