Reasons for lesion uncrossability as assessed by intravascular ultrasound. - Salem H; Mintz GS; Matsumura M; Zhang M; Usui E; Seike F; Fujimura T; Noguchi M; Hu X; Jin G; Li C; Fall KN; et al. (Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions, 2022)