An invasive procedure, performed along with cardiac catheterization; a miniature sound probe (transducer) on the tip of a coronary catheter is threaded through the coronary arteries and, using high-frequency sound waves, produces detailed images of the interior walls of the arteries. Where angiography shows a two-dimensional silhouette of the interior of the coronary arteries, IVUS shows a cross-section of both the interior, and the layers of the artery wall itself.
Your doctor uses IVUS to:
- View the artery — from the inside out , making it possible to evaluate the amount of disease present, how it is distributed, and in some cases, what it is made of
- Determine the need for further treatment (angioplasty or bypass surgery)
- Determine the need for aggressive management of risk factors prior to onset of symptoms and advanced disease
- Determine the predictors of transplant coronary artery disease
IVUS has played a role in important research studies looking at internal changes to the artery – such as evaluating the role of vulnerable plaque and the impact of cholesterol lowering medications on regression.
This information is about testing and procedures and may include instructions specific to Cleveland Clinic. Please consult your physician for information pertaining to your testing.