Intracoronary Ultrasound (IVUS) is a modern diagnostic cardiology test performed in a hospital or clinic by a specialized interventional cardiologist. It is an Intracoronary Ultrasound, i.e. an ultrasound that is carried out inside the coronary artery and through which the morphology of the narrowing of the coronary arteries is recorded with the greatest possible precision. In this way, the doctor obtains information about the composition and shape of the plaque and accordingly forms the decision to open the vessel, the type and size of the stent, etc.

Modern IVUS systems provide the possibility of detailed visualization of the vessel walls, while with the use of radio frequency waves one can evaluate the composition of the atheromatous plaque. Color Doppler flow (Chroma-flow), can be added to IVUS imaging to check stent deposition in the lumen. New "zero-contrast" angioplasty techniques using IVUS are potentially safe and effective in selected patients with severe kidney disease.