((((((treehouse)))))))))

I've had MRIs, CAT scans, x-rays and ultrasounds... all sorts of wonderous expensive equipment.

Do NOT put off the appointment. Yeah, it's not exactly the most pleasant experience, but it's not fully enclosed, so you're not trapped inside of it. Talk to your doctor, see if you're allowed to listen to music while having it done, or see if you can take any anxiety medication or something to calm yourself down. Practice breathing. Otherwise, sometimes people are allowed to sleep through it (I don't know how they do it, I found it loud. They gave my headphones to block out some of the sounds, and so I could hear what the people in the "control centre" were saying to me).

It is over fairly quickly. I actually find the CAT scans the worst myself. The ultrasounds are too cold and invasive (icky gel!) and I can't complain too much about the x-rays.

It's normal to be a bit anxious. But please don't put it off, because the anticipatory anxiety is a lot worse than the anxiety during the procedure.