A good book is good advice, but to add to it, make sure you empty your bladder before going in for the
procedure.
The contrast they inject in you to provide
the images makes
the kidneys work overtime. Also,
the Angio suite is a cold place, it has to be cold for the equipment. I ask for lots of blankets so I'm as snug as a bug in a rug.
With regards to spine problems, yes they can make pains seem to appear from anywhere in the body.