fig7

Figure 7. Combination of RA and high-pressure balloon dilatation for eruptive CCNs. (A) Severe mid-RCA stenosis resulting in distal vessel CTO; (B) IVUS showing extensive long-segment calcification with eruptive CCNs; (C) Rotational atherectomy performed with a 1.5mm burr, followed by pre-dilatation with 2.75 and 3.0 mm NC balloons to high pressure, then PCI with overlapping drug-eluting stents (DESs); (D) Post-treatment IVUS showing good stent apposition. CCNs: Calcified coronary nodules; RA: rotational atherectomy; IVUS: intravascular ultrasound; RCA: RIGHT coronary artery; NC: non-compliant; PCI: percutaneous coronary intervention; CTO: chronic total occlusion.