@med.guide3d: How Rotational Atherectomy Procedure (3D Animation) Rotational Atherectomy is used to treat hardened blockages caused by Coronary Artery Disease. Doctors use a tiny rotating burr to grind down calcium deposits inside the artery. This helps restore blood flow and allows better stent placement. #atherectomy #cardiology #heartdisease #medicalanimation #3danimation