Skip to main content
  • Conference Abstract
  • Open access
  • Published:

P49 Experimental Flow Visualization of a Flow Diverting Stent in a Popliteal Aneurysm



Flow diverting stents are commonly used in saccular cerebral aneurysms [1]. Their use has not yet been investigated for popliteal aneurysms, which are commonly fusiform in nature and exposed to pulsatile triphasic flows. We have shown the clinical feasibility of flow diverters in a pilot study of 12 patients [2]. To investigate its physiologic mechanism and the optimal flow diverter configuration, flow profiles were investigated in popliteal aneurysm phantoms.


Six transparent silicone elastomer models were created and integrated in an experimental flow set-up, which reproduced physiologic pulsatile flow conditions. These models covered two idealized anatomies (Figure 1) and three stent configurations (control, single stent [SUPERA, Abbott, Santa Clara, CA] and dual stent). Laser particle image velocimetry was used to investigate two-dimensional flow velocities, shear rates and wall shear stress in the models.


The introduction of a flow diverter stent led to a two-time reduction in aneurysm flow velocities for single-layer stents, and a three-time reduction for double layer stents (Figure 2), with higher reduction factors for the bent inlet model. Forward flow was optimally diverted, whereas backward flow was deflected into the aneurysm by the unceasing momentum of the forward jet. Nonetheless, both flow velocities, shear rates (1.3–2x decrease) and wall shear stress (2.8–4.5x decrease) were strongly reduced by the double-layer configuration.


This study demonstrates the ability of a double-layer flow diverter stent for reducing flow velocities in popliteal aneurysms, supporting its clinical use in terms of its fluid mechanical effects.

The popliteal aneurysm phantoms. (A) Bent inlet trajectory. (B) Straight inlet trajectory. (C) The straight inlet model treated with a single layer stent (left) and a dual layer stent (right), which follow a helical and straight trajectory, respectively.

Velocity vector and contour plots during peak forward flow in the straight inlet models. From left to right: control, single layer (dashed red line) and double layer (dash-dot red line) stent. The single layer stent is partly out-of-plane due to its helical trajectory.


  1. Alderazi YJ, Shastri D, Kass-Hout T, Prestigiacomo CJ, Gandhi CD. Flow diverters for intracranial aneurysms. Stroke Research and Treatment 2014;2014:415653.

    Google Scholar 

  2. Tessarek J. Zentralblatt Chirurgie 2015;140:535–41.

Download references

Author information

Authors and Affiliations


Corresponding author

Correspondence to Lennart van de Velde.

Rights and permissions

This is an open access article distributed under the CC BY-NC 4.0 license (

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

van de Velde, L., Reijnen, M., Versluis, M. et al. P49 Experimental Flow Visualization of a Flow Diverting Stent in a Popliteal Aneurysm. Artery Res 25 (Suppl 1), S89–S90 (2019).

Download citation

  • Published:

  • Issue Date:

  • DOI: