This process substantially reduces the time and effort required in analysis
of recorded cardioangiograms. This process takes advantage of cardiac
twist, the slight rotation of the heart about a vertical axis when the
heart beats. A frame near or at the beginning of cardiac twist is selected
and a second frame later on in the twist is also selected. Selection of
the frames can be manual or automatic. The frames are viewed by
conventional stereoscopic methods. The positions of the coronary arteries
with respect to the heart are clearly shown in the three dimensional
visualization.
