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TIL before CT and MRI’s were available, doctors used to replace the fluid in and around the brain with air to do imaging with X-rays. (en.wikipedia.org)

submitted 1 year ago by [email protected] to c/[email protected]

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cross-posted from: https://lemmy.world/post/1779005

Apparently this was done because air captures less X-rays than CSF and thus creates more contrast with brain tissue compared to the cerebrospinal fluid.

Unfortunately this was pretty painful and uncomfortable.

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[–] [email protected] 3 points 1 year ago (1 children)

I think that sounds super peaceful actually

That’s the thing, it’s not peaceful. It’s unbelievably loud, like standing next to a car alarm or construction site. And every time you’ve finally get used to the rhythm of the banging and clanging, it changes pitch and tempo (? Idk the correct words) and any semi sleep-like state you’ve willed yourself into is disrupted. Plus it’s cold, the bed thing is hard and narrow and you’re not allowed to move at all - no wiggling to get comfy, no scratching your nose. You have to lie perfect flat and still in a cold, incredibly loud, uncomfortable and and sterile environment for 45 minutes.

I’ve always slept with a blanket on my head - even as toddler. Even when it’s boiling hot I need a sheet or pillow case or something over my head. I love small cosy places. I love that feeling of hiding from the world. You do not get that while having an MRI scan on your brain, I promise you.

[–] [email protected] 1 points 1 year ago* (last edited 1 year ago)

Everyone's experience is different. When I got an MRI scan I really did almost fall asleep. Yes it was loud but its rythmic tapping almost sounded like a song, and add the warm blanket on my legs I was sometimes almost nodding off (it was for a cognitive study so I had to stay awake)