You appear to have a Tesla fetish. He obviously did early work in X-rays, but anything he did pre-1986 was "claimed" and after the published work of Röntgen. We really don't know what he did, other than his post Röntgen claims as nothing was published. He tended to be a publicity hound. Obviously, he did make some great early photos with x-rays.
Still, he has many great inventions, but in terms of advancements of science, but a footnote, with nothing to almost nothing in terms of scientific advances credited to him. In fact, Tesla in many ways was "anti-science". Look at the disdain he had for Einstein and his theories, all well beyond Tesla and almost all proven to be true.
Tesla spent much of the end of his life convinced of his brilliance in the pursuit of "wireless power". Being a "tinkerer" as opposed to a hard core scientist, he never spent the time to understand the science up to that point and the science that was available to him (see his disdain for Einstein). Instead of spending a few weeks or months learning the science that would have showed his pursuits were a total folly, he spent years and all his remaining money on a fool's errand and died broke and broken, the victim of his own ego and commensurate declining mental health.