Shockwave Lithoplasty Compared to Cutting Balloon Treatment in Calcified Coronary Disease - A Randomized Controlled Trial

The trial will be composed of two cohorts: * Patients treated with up-front rotational atherectomy * Patients in whom atherectomy is not planned Randomization to either cutting balloon angioplasty or intravascular lithotripsy will occur as follows in the 2 cohorts: * After rotational atherectomy is safely completed In the rotational atherectomy arm * After safe and successful wire crossing in patients in whom atherectomy is not planned. The trial is designed to demonstrate non-inferiority between cutting balloon angioplasty and intravascular lithotripsy in each cohort with regards to the primary endpoint of post-procedural stent area as measured by intravascular imaging at the site of maximal calcification.