This work describes how is possible the definition
of the light hole or lumen in implanted stents affected by
restenosis processes using the BioImpedance (BI) as biomarker.
The main approach is based on the fact that neointimal tissues
implied in restenosis can be detected and measured thanks to
their respective conductivity and dielectric properties. For this
goal, it is proposed a four-electrode setup for bioimpedance
measurement. The influence of the several involved tissues in
restenosis: fat, muscle, fiber, endothelium and blood, have been
studied at several frequencies, validating the setup and
illustrating the sensitivity of each one. Finally, a real example
using a standard stent, has been analyzed for stable and
vulnerable plaques in restenosis test cases, demonstrating that
the proposed method is useful for the stent obstruction test.
Bioimpedance simulation test has been performed using the
electric physics module in COMSOL Multiphysics®.Junta de Andalucía 2017/TIC-17