Safety Evaluation and Flow Modification in the Anterior Cerebral Artery after Pipeline Embolization Device Deployment across the Internal Carotid Artery Terminus

Figure 2

A 50-year-old male patient was treated with a single pipeline embolization devices (PED) following the unexpected discovery of a C7 segment fusiform aneurysm by computed tomography angiography (CTA). The PED size/ipsilateral internal carotid artery (sPED/I-ICA) ratio was 1.05. The 2-year follow-up angiography (d) showed that the aneurysm still had a residual body, but A1 (b, black arrow) was occluded. The mRS score of the patient was 2. (a, b) Preoperative 3D reconstruction and orthographic angiography images showing patency of the ipsilateral A1 segment. (c) PED implantation. (d) Two-year angiography image showing the residual aneurysm with ipsilateral A1 occlusion. (e) Contralateral 2-year follow-up angiography showing that the right A2 blood supply area was compensated by the anterior communicating artery.

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