I am trying to create a 3D model of bone marrow, that is composed mainly of a lot of random tubes, creating a volume.

I found a 3D scan from some bones, and thought I could save a lot of work just cleaning them up, but I can't find a way to leave them on a constant thickness and roundness, the best I can achieve is this ugly thing.

Any ideas on how it can be done? Thank you in advance!

Edit: Done! After playing with it a good amount of time, I got something I like with the Sverchok add-on. I've left a screen of the render (just need a better texture for it to be ready) :D