Recipient artery dissection during extracranial-intracranial bypass surgery: Two case reports

Figure 1 Preoperative brain image findings (case 1). A: Initial brain magnetic resonance angiography revealing right middle cerebral artery occlusion; B: Diagnostic cerebral angiography of the right internal carotid artery injection demonstrating proximal right middle cerebral artery occlusion and no transdural collaterals; C: Brain single photon emission computed tomography revealing moderately diminished baseline perfusion in the right frontal lobe; D: Moderately diminished cerebrovascular reserve in the right frontal, parietal, and temporal lobes.