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(a + b). Arteriograms showing proximal occlusion of the main-stem of the middle cerebral artery (A) and a distal occlusion of the internal carotid artery (B), arteriographic score values of 2 and 3 respectively. The following arteries are identified: internal carotid artery [ICA], anterior cerebral artery [ACA], middle cerebral artery [MCA], posterior cerebral artery [PCA], common carotid artery [CCA] and catheter [CAT].
