Overview

CTA uses timed iodinated contrast boluses and rapid CT acquisition to visualize arterial and venous anatomy noninvasively.

Technique

Bolus timing multiphase acquisition and postprocessing such as MIP and three dimensional rendering optimize vessel visualization.

Clinical Uses

Pulmonary embolism detection aortic dissection peripheral arterial disease and preoperative vascular mapping.

Limitations and Safety

Iodinated contrast nephrotoxicity risk and radiation exposure require patient selection and optimization.