Figure 2.

Central illustration. Compared strategy between the angiographic guidance and the intravascular imaging guidance in patients with heavy calcified lesion undergoing RA-assisted PCI. Angiographic guidance, coronary angiogram pre and post stent implantation is shown in (A). Imaging guidance, coronary angiogram and intravascular imaging (IVUS or OCT) pre and post stent implantation is shown in (B). (C,D) illustrated that the intravascular imaging guidance resulted in a greater number of RA burrs and larger RA burrs used, larger stent diameter and longer stent length. Forest plot presented odds ratio for one-year clinical outcomes compared between the angiographic guidance and the intravascular imaging guidance (E). Intravascular imaging guidance had a significantly lower incidence of 1-year MACE. RA, rotational atherectomy; PCI, percutaneous coronary intervention; OCT, optical coherence tomography.