Figure 1 Milestones in coronary angioplasty Figure 1 | Milestones in coronary angioplasty. The evolution of percutaneous coronary intervention (PCI) is reported as a timeline. The key steps include the first balloon angioplasty performed on patients by Andeas Grüntzig, the introduction into clinical practice of drug-eluting stents to prevent restenosis, and the development of bioresorbable stents, which can be defined as the 'third revolution' of interventional cardiology. Indolfi, C. et al. (2016) Bioresorbable vascular scaffolds — basic concepts and clinical outcome Nat. Rev. Cardiol. doi:10.1038/nrcardio.2016.151