I thought I was scheduled for just a full body scan but it turned out to be that and a 3D scan of my head. For these I had to take a radio-active material (I can't remember now whether it was something I drank or something dripped in through a needle) and then wait for a couple of hours. I was allowed to wander around the hospital but asked not to leave it.
When the time was up they did the full body scan. When it was over I saw the picture — a really cool picture of my skeleton. I later asked for a copy of the picture — they seemed dubious about this and I never did get it, but it would have been really cool on my web-site. Not everyone gets to see their skeleton.
Then I had the head scan. This was the pits. I'm not particularly claustrophobic but I was close to panic in this. The device was a in the form of a equilateral triangle which rotated round my head. When the flat side of the triangle was directly above me it actually touched my nose — there was that little space inside. It lasted for 20 minutes or so (I'd been told this but there was no way to know how much time had elapsed and how much was left. It got very hot inside and I was about to pull myself out when it finally was over.
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