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Cake day: July 7th, 2023

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  • SacralPlexus@lemmy.worldtoScience Memes@mander.xyzscan scam
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    2 months ago

    Radiologist here. 👋🏻

    You are right it does not require contrast. The scan uses a special technique to reduce signal from tissue that isn’t moving so only things that are moving produce high signal and show up “bright.” Since blood is the only thing really moving in the brain - voila!