Inclusion Criteria  Adults Patients ≥18 years of age Patients undergoing percutaneous coronary intervention with planned rotational atherectomy and planned drug-eluting stent implantation of a lesion with target vessel reference diameter ≥2.5 mm and ≤ 4.0mm, lesion length ≥ 5 mm and moderate to severe calcification by angiography Patients eligible for percutaneous coronary intervention  Exclusion Criteria  Patients in cardiogenic shock Planned surgery (cardiac and non-cardiac) within 6 months after the index procedure unless the dual-antiplatelet therapy can be maintained throughout the perisurgical period Patients undergoing primary percutaneous coronary intervention for ST-segment elevation myocardial infarction Subject is pregnant, nursing, or is a woman of child-bearing potential who is not surgically sterile, < 2 years postmenopausal, or does not consistently use effective methods of contraception Patient has any other serious medical illness (e.g., cancer, end-stage congestive heart failure) that may reduce life expectancy to less than 12 months Currently participating in another investigational drug or device study Patients referred to coronary artery bypass grafting after heart team discussion  Angiographic Specific Exclusion Criteria:  Lesion(s) with angulation > 45 degrees by visual estimate Lesion(s) stenosis through which a guidewire will not pass. Last remaining vessel with compromised (<30%) left ventricular function Saphenous vein grafts Angiographic evidence of thrombus Angiographic evidence of significant dissection at the treatment site Lesion(s) with previously placed stent within 10 mm (visual estimate)