Thanks for your reply, Scott. My doctor ordered 1mm 'cuts'. I ended up calling the doctor's office and he said I should go for the T3 thing since it gives a better picture. So I scheduled that. I still wonder about the MRA someone on here mentioned but I guess I'll just go with the MRI.
A couple of comments.
For reasons I won't get into here, I had requested MRI slices at 1.5mm or less.
One place I called fought me on it, saying that the radiologist didn't want slices that small.
I protested because the Dr. who was going to use the MRI images specifically asked for slices that thin. I didn't care so much what the radiologist wanted, the images were not primarly for him. In the end I went somewhere else.
I'd have been thrilled to get 1mm slices. How'd you luck out?
Secondly . . . a tiny bit of research on "MRI vs MRA" should answer your question. http://en.wikipedia.org/wiki/Magnetic_resonance_angiography
Do you have some cause to doubt your doctor's ordering of an MRI vs an MRA?
MRA looks like it is a type of MRI that is aimed at imaging blood vessels. (A = Angiometry)
Are you trying to image the tumor? Go MRI.
Are you trying to image bloodvesels - Go back and ask for why you aren't getting an MRA.