Coronary Stents A stent is a support device for permanent
expansion of blood vessel to restore blood flow.
Implantation is done with X-ray guidance in a Cathlab, which exposes the patient to ionizing radiation and potentially kidney damaging X-ray contrast agents.
After implantation, there is currently no way to show a potential restenosis (re-narrowing) of the blood vessel using non-invasive diagnostic systems. Diagnosis requires another catheterization procedure.
StentImplantation
Biophan’s technology presents an alternative – using an MRI system for diagnosis of restenosis. MRI diagnosis provides advantages, since it is non-invasive and uses no harmful radiation and no iodine contrast agents.
1.5 Tesla MRI Artifacts of Current Stents
Expanded
StentsOriginal size
Crimped
Stents
Cobalt
316L stainless steel
With existing stent
technology, no useful
images can be obtained from within
common stents using
MRI.
Imaging of In-Stent Blood Clots Using Biophan Resonator Technology
1 Tesla Philips NT, head coil, TR=300ms, TE=6ms, FA=40°,
transversal
Cross Sectional Schematic of Stent with blood clot
Video
Biophan’s technology enables imaging of the blood clot within the stent
Resonant Stent Blood Clot