Closed-Cell Stent-Assisted Coiling of Intracranial Aneurysms: Evaluation of Changes in Vascular Geometry Using Digital Subtraction Angiography.

Stent assisted coiling resulted in a highly significant increase of the inflow angle α from a mean value (SEM) of 119° (±6.5°) pretreatment to 130° (±6.6°) posttreatment (P ≤ .001).

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Comparing the diameter of unruptured to ruptured aneurysms, we found a slight trend that did not reach statistical significance towards a greater diameter in the unruptured group compared to the ruptured group.

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In our study we could show that SACE did not only lead to effective straightening but also showed a trend towards an increasing diameter of the parent vessel, suggesting not only a bending [ 11 ] but also a radial force exerted by the deployed stent.

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