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.