label: NHLBI Coronary Artery Dissection Type B
label_lc: nhlbi coronary artery dissection type b
description: "Parallel tracts or double lumen separated by a radiolucent area during contrast injection with no persistence after dye clearance. (Adapted from: Coronary artery angiographic changes after PTCA: Manual of Operations NHLBI PTCA Registry 1985-6:9)"