I have a CT scan of an aneurysm model that I've turned into an STL file and uploaded to SolidWorks, but I can't figure out how to "clean up" the model. The file is too large to upload, but I've attached photos (sorry for quality, computer is being picky and won't let me screenshot, so these are taken on my phone). The CT picked up many small pieces outside of the actual aneurysm vasculature. I was curious of three things: First, I wanted to know if there was a simple way to clean up all of the "floaties" around the model. Second, I wnt to "cut off" the ends of the model where you can see the plastic plugs, so that it appears as open vasculature. Third, if you look closely, you'll see a very small partition between the two halves of the model. This is because the CT machine couldn't read the entire model in one scan, and two scans resulted in this small partition. I was wondering if there was a way to connect these two halves (even if it is fairly rudimentary).
Any help would be appreciated, as I'm relatively new to SolidWorks modeling.