Since the introduction of balloon angioplasty for the relief of coronary artery stenoses and of anginal symptoms in patients with coronary artery disease by Andreas Griintzig in 1977, the field of interventional technology and treatment strategies has grown enormously. For the reduction of hemodynamically significant coronary artery stenoses balloon angioplasty is the standard and reference method with a high primary success and low complication rate. Because of the relatively high recurrence rates of 30-40% of balloon angioplasty a whole family of different angioplasty techniques has been...