Tesla is great and all, but he did not invent useful methodologies to utilize X-Rays and Radar. I'm sure he participated in some development, in fact I know he continued some Rontgen's X-Ray research, and was in fact allowed to because Rontgen was also a pretty cool guy and didn't patent his developments, but medical X-Ray imaging rightly goes to Rontgen.
As far as Radar, Tesla published something about using Radar to detect subs, thinking that the UHF band used in radar could penetrate water. It cannot. This was in the late 1910s. I don't know if he did anything else, but the leaders in Radar after world war I was Britain, and Tesla was based in the US.
Christian Hulsmeyer developed a working radar, though primitive in 1904.
I'm all for giving the guy props, but not if it takes away from other STEM bros from history like Rontgen.[Autistic Aside Completed]