Question for CT techs- What do you call this type of artifacting? What causes it, and how would you fix it?

https://reddit.com/link/tld8ng/video/bfb28yas17p81/player

I'm not a CT tech, I create 3D models from CT scans for surgical planning and custom 3D printed implants. I have an ok grasp of most things CT-wise but again, I've never trained or had experience as a technologist. Most types of artifacting I can identify or at least google if unsure, but for some reason I can't find anything resembling this. I generally just call it "cotton candy."

We have certain protocols for every scan:

Must be 1.25mm slice thickness or less
No gantry tilt
Must be axial
No patient movement

There's a few more but those are the relevant ones.

So, with those protocols in effect, is this still avoidable? Is it a crappy CT scanner? A reconstruction issue?

Thanks in advance

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source https://www.reddit.com/r/Radiology/comments/tld8ng/question_for_ct_techs_what_do_you_call_this_type/

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