So, again an echo can do this, or an
angiogram. 64 slice + echo are the safest procedures.
Angiogram is invasive so carries
risks, such as bleeding, maybe the need for a transfusion. If the catheter wire penetrates a vessel wall, you could be sent for immediate surgery. A piece of plaque could be dislodged, causing stroke or heart attack or death. The risk is still low, but you have to sign a consent form for these possibilities.