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. Author manuscript; available in PMC: 2015 Dec 1.
Published in final edited form as: J Neurointerv Surg. 2014 May 1;7(6):402–407. doi: 10.1136/neurintsurg-2014-011231

Figure 2.

Figure 2

‘Characterization of terminal internal carotid artery (ICA) occlusions as functional L or functional T lesions based on perfusion of the ipsilateral anterior cerebral arteries territory from the contralateral ICA injection at DSA showed dramatically superior revascularization and clinical outcomes with functional L compared with functional T lesions. DSA reveals a T-shaped clot with a functional L lesion pattern on arterial (A) and venous (B) phase images with robust collateral flow. In another case, an L-shaped clot with patency of the ipsilateral A1 segment demonstrates a functional T lesion pattern with marginal collateral perfusion in the arterial (C) and venous (D) phase images.