Acute diffuse thickening like ‘halo’ of the coronary tunica adventitia after rotational atherectomy

Generally, a low-density, irregular-shaped area that appears outside the tunica media on intravascular ultrasound (IVUS) after coronary debulking, such as rotational atherectomy or coronary orbital atherectomy, is an indication of coronary perforation. Over time the perforation can be susceptible to enlargement and patients become hemodynamically unstable. Although very rare, acute diffuse thickening of the coronary artery wall which consists of...