Infarct related artery morphology

Associate Editor-In-Chief:

Eccentric
The plaque is twice as large on one side of the arterial border compared with the other. “Stenosis noted to have one of its lumen edges in the outer one-quarter of the apparent normal lumen.”

Calcification
Readily apparent densities noted within the apparent vascular wall at the site of the stenosis.

Diffuse
Lesion is ≥20 mm in length.

Bifurcation
Atherosclerotic plaque involves the origin of two separate arteries. It does not necessarily require two guidewires.

Ostial
Lesion begins within 3-5 mm of the origin of a major epicardial artery.

Pulsatile Flow
Cessation of antegrade flow during systole or frank flow reversal during systole. Codes as yes (present) or no (absent).

Deceleration
Dye flow down the artery is slowed at any point during the course of flow.