Keywords:
Interventional vascular, Arteries / Aorta, Vascular, CT-Angiography, Fluoroscopy, Catheter arteriography, Embolisation, Experimental investigations, Arthrography, Aneurysms, Artifacts, Prostheses
Authors:
K. M. Eberhardt, D. Maxien, M. F. Reiser, M. Treitl; Munich/DE
DOI:
10.1594/ecr2013/C-0276
Conclusion
Finally we can conclude that Onyx suspensions with less than 50% tantalum of the original product provide the best combination of low artifact intensity and good visibility of severe endoleak re-perfusion.
Corresponding to that,
Onyx suspensions with less than 45% tantalum of the original product provide the same characteristics for slight endoleak re-perfusion.
Simulation of fluoroscopically controlled endoleak embolization showed that Onyx suspensions with 30% tantalum or less are baldy visible.
Due to injection of reasonable amouts before first visualzation of the cast,
they bear a high risk for accidental non-target embolization. Therefore,
Onyx suspensions with 30% or less Tantalum content of the original product are risky and exhibit an inacceptable fluoroscopic visualization.
In summary we state that Onyx is an important and potent embolic agent that exhibits various benefits and is more frequently used for peripheral embolization.
We demonstrated that the tantalum content of Onyx can and should be reduced to values of 45-30% of the original product.
This does not only reduce the artifact intensity of follow-up CT-examinations,
but also enables visualization of even small re-perfused endoleaks after treatment with Onyx.
It further provides safe fluoroscopic control of the embolization process.
As a drawback of our study,
we need to advise,
that we performed our experiments under perfect conditions.
There was no anatomical background surrounding our model and overlapping the images. The corresponding animal experiments are still in progress,
and proofed our results.