Conformability of Balloon-Expandable Stents to the Carotid Siphon: An In Vitro Study
R. du Mesnil de Rochemonta,
B. Yana,
F.E. Zanellaa,
D.A. Rüfenachtb and
J. Berkefelda
a Institute of Neuroradiology, Johann Wolfgang Goethe-University, Frankfurt am Main, Germany
b Section of Neuroradiology, University of Geneva, Geneva, Switzerland
View larger version (69K):
[in a new window]
|
Fig 1. Measurement of apposition of the stent to the carotid siphon shaded in gray.
A, Area between stent and the wall at the convexity of the anterior segment of the siphon.
B, Area within the stent.
C, Area between stent and wall at the concavity at both extremities of the stent.
| |
View larger version (82K):
[in a new window]
|
Fig 2. Digital images (1) and 3D rotational images (volume rendering) (2) of the 6 balloon-expandable stents after implantation in the silicone model of the carotid siphon (A) Cordis Bx Sonic, (B) Medtronic RX Driver, (C) Biotronik Lekton Motion, (D) Guidant Multi-Link Vision, (E) Boston Scientific TAXUS Express2, and (F) Terumo Tsunami Gold. Note the limited conformability especially to the outer curve.
| |
View larger version (29K):
[in a new window]
|
Fig 3. A, Measurements of the area within the stent (first bar). The summation of the area between stent and the wall at the convexity of the anterior segment of the siphon and the wall at the concavity at both extremeties of the stent (second bar) for all tested stents.
B, Apposition ratio: area between stent and vessel wall in relationship to the area within the stent.
| |
