MAGNETIC-RESONANCE-IMAGING OF THE THORACIC AORTA

Magnetic resonance imaging (MRl) is well-suited for imaging the vascul ar system and is of particular value in. assessing the anatomy and pat hologies of the thoracic aorta. The intrinsic contrast between the blo od pool and the vascular structures allows excellent depiction of intr a- and extravascular anatomy and eliminates the need for intravenous c ontrast agents. A large field of view provides a complete evaluation o f the mediastinum and chest. Both qualitative and quantitative techniq ues are available, which can yield physiological data in addition to a natomical information. The multiplanar capability offers images in any plane, allowing an accurate assessment of the longitudinal extent of disease and providing images perpendicular to vessels, even when tortu ous. MRI currently represents an essential component of the imaging st rategies available to assess the thoracic aorta and may come to functi on as a gold standard for certain conditions. As the technology contin ues its rapid evolution, MRI will most likely be able to serve as an e ffective noninvasive evaluation to provide all of the anatomical, path ological, and physiological information required of a comprehensive ex amination of the thoracic aorta.