Hi spankyandrex,
Thats a long time in the tube, and I'm sorry you were so uncomfortable in there 30 to 45 minutes per section is pretty standard from what I've seen, and you had two sections done. Contrast is as you thought to light up whatever is there making it easier to see. Seems odd to not to use the contrast if he saw lesions though as the contrast can help determine whether they are active or not and I would think the doc would want to know that. Try to hang in there and keep us informed.
Kimber