First of all thanks for the quick response !
The quality of the image is more than enough, even on my phone I have no compression problem when zooming in ! I will take a closer look to the links you added, I was only looking at the How to approach a professional Topic so I really appreciate those new resources. I was indeed looking for a professional to inject those implants. But since, there is not much of them in France, I think I would have to approach / convince one by myself.