As soon as I went into the CT scan room. I knew it was a waste of time. I am a large woman when I was told I would have to lay down with my hand over my head. I told them that's not possible because I need a total shoulder replacement. When I offer the crook of my arm for contrast dye. Was told know because you can bend the arm is over my head. I told them I would force myself to put my arms over my head just set this going. So I told the tech if you want to use the veins on the top of my hands. Its not going to happen. No nurse has ever been able to start an IV there. The only folks that can do it are anesthesiologists and phlebotomists. I heard her say "I will give my college try". Why do techs not listen? I was right the tech could not get the needle to go higher up the vein. Idiot, what did she think. Starting an IV maybe 5 times a week does not mean your good at.