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FIG 1. An example of neck-up aneurysm positioning with flow arrest. The polymer, 8% VIN, enters as a continuous, gravitationally dependent layer that fills the aneurysm. This example highlights the significance of placing the aneurysm in a gravitationally dependent position for embolization when instilling heavier-than-blood polymers.FIG 2. A and B, After there is adequate aneurysm filling with polymer (A), gentle suction is applied to the introducing catheter to detach it from the polymer (B). Optimally, there is uncomplicated catheter retrieval without significant detachment tail formation or polymer mass retraction/displacement. In this example, a small residual aneurysm remains (arrow), and there is parent vessel luminal encroachment with partial pullout of the polymer mass during detachment.
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