..by the way, because it was so depressing to learn of an ultra-high CAC score, and what that means mortality-wise, I'm glad I did the CTA - for my own mental health. As it turned out, the two worst-affected arteries for me (LAD and RCA) were 40 and 50% stenosis in two small parts and 10-20% in two small other areas. So could be worse, though there obviously could be worse stenosis in other areas not seen. I'm doing TCD doppler scans now to check blood flow in my head and neck. If that's bad, I'll do another CTA for head and neck. I know the doctors don't recommend these due to the affect contrast dye can have on kindeys, but mine seem stronger than usual for my age. So it's a roll of the dice. To each his own I guess.