NHLBI Classification for Coronary Artery Dissection

From Ask Dr Wiki

Type Description

A Minor radiolucent areas in the lumen without impairment of flow or persistant dye staining after contrast runoff

B Luminmal flap that is radiolucent and that runs parallel to the vessel wall with contrast injection but without impairment of flow or persistant dye staining after contrast runoff

C Contrast appears outside of the vessel lumen as an "extraluminal cap". The staining appears even after contrast clears the lumen

D Spiral radiolucent luminal filling defects. Often persitant staining after contast clears from the vessel.

E New and persistant filling defects in the vessel lumen.

F Lesions that progress to impaired flow or total occlusion.