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.
Jesus Christ. I will never again complain about noisy, claustrophobic MRI machines.
I’m still not sure why every one hates them. I found my CT experience pretty soothing.
CT scans and MRIs are two different types of scans, done in different machines. A CT machine like a doughnut on its side - the hole you go in is wider and shorter. MRIs are more coffin-tubed shaped. If you go in feet first (for an MRI scan on your knee say) it’s ok because your head is on the outside. If you’re having a brain scan you go in head first, your head stabilised by a plastic support so you can’t move it. It’s so narrow in there you can’t bend your arm up 90 degrees, let alone sit up. The stabiliser stops you from moving at all. They put foam ear plugs in your ears and then big over ear headphones over that so the tech can talk to you and you’re not crippled by the noise. There’s a tiny mirror above your eyes, angled to you can see out of the tube. I’m not claustrophobic at all and I have to fight panic when I’m im in there. I think you may have had CT scans in the past, not MRIs. And if you had a MRI, you probably didn’t go in head first because it’s not really an experience anyone could describe as relaxing. Well maybe cave divers, or people who make homemade submarines might find it relaxing, but for your average joe it’s unpleasant.
You literally just described how I would sleep growing up. Find a small crevasse (usually behind the couch or under a bed), wiggle myself into it and fall asleep. lol
When headphones became cheaper, they were added to the mix too. 12 people in a house gets pretty loud! Or when my dad had to do rock concerts. He’d help me find a place to hunker down in.
I think a really key difference is that you could make yourself comfy in your little nook, and you could leave it at anytime. Plus in your case it sounds like you went there to escape the noise. This place is the noise. Even if you have a full on panic attack, you physically can’t get out of that tube without the techs pulling you out. Having the choice and ability to leave a space is really important.