IVUS can help clarify degree and type of stenosis (i.e, MLA, plaque
burden, and calcium). While IVUS can also characterize plaque
rupture, thrombus, and dissection, calcium may be more common in
everyday PCI. An important factor in your stenting strategy, calcium
is characterized by very bright areas with acoustic shadowing that
blocks out the image behind. Reverberations may also be seen.