Use your ipod to hook into the music you love. If you do not want music, then ask the technician to talk to you inbetween sonic x-rays. I like to count, i.e. if she says this series will take 2 minutes, I count to 120 to see how close I am to being accurate.

counting has a calming effect.

have them put a mask or cloth over your eyes and think of sleeping. The meds should help you. Consider yourself in a very exclusive spa.

finally, the sounds are actually amusing. A few times, I had to refrain from laughing at the bizarre noises.

I have had the contrast as well. It is nothing at all.

rather than concentrating on the negatives - your anxiety, your claustrophobia, research relaxation techniques.