Magnets!

I laid down on the table and was covered with a light blanket. It had been kept in a warming box, but the heat dissapated quickly in the cold room. My feet were uncovered and cold. I slid into the tube and closed my eyes.

The rotating magnets were very loud. I tried to track the different sounds and rhythms. I don't think I feel asleep, but I lost all sense of time. The exam lasted much longer than I thought.

I'm also not telling what part of my body was scanned.