[question] Weird waterpaint-like image quality

Hi everyone, long time reader, first time poster.
I'm viewing a lot of CT scans for a college project and I came across some weird kind of scans that look like they went through some instagram filter.
An example:

https://preview.redd.it/adyffljrdnu51.png?width=1078&format=png&auto=webp&s=4311181bf6dba9dc4ae093556f81d108d6df124a

I have seen this multiple times already, from the same type of scanner (Philips IQon - Spectral CT) and I don't understand if this is intentional (and why would a radiologist choose this kind of scan) or some by product of using a spectral CT (and again, what is it good for?).

Would really appreciate your wisdom and experience :)

submitted by /u/MrNiceGuy143
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source https://www.reddit.com/r/Radiology/comments/jfznb6/question_weird_waterpaintlike_image_quality/

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