. 2019 Jun 14;85(Suppl 1):S4–S8. doi: 10.1093/neuros/nyz042

TABLE 1.

Inclusive Definition of LVO

Anterior circulation
Intracranial ICA, M1, M2^a, M3^a, A1, A2^a
Posterior circulation
Intracranial VA, P1, P2^a, BA

A1, first segment of the anterior cerebral artery (ACA); A2, segment of the ACA; BA, basilar artery; ICA, internal carotid artery; M1, first segment of the middle cerebral artery (MCA); M2, second segment of the MCA; M3, third segment of the MCA; P1, first segment of the posterior cerebral artery (PCA); P2, segment of the PCA; VA, vertebral artery.

^aVariably referred to as LVOs or distal vessel occlusions.