Magnetic resonance [MR] angiography is a rapidly evolving field in MR imaging, the main goal of which is a noninvasive tool for visualizing blood vessels. The acquisition of continuous images of the blood vessels, comparable to the conventional DSA images, as well as the functional evaluation of blood-flow velocities and flow patterns are the subject of continuing developments. The basic principles of the various techniques and their clinical applications are reviewed and the practical limitations in specific anatomic regions discussed. The review concludes with a survey of future developments.