Bolus Tracking

Bolus tracking is a technique used in CT angiography to visualize vessels more clearly. This method individualizes the timing of a volume of contrast media delivery to a region of interest. The image is scanned once the region of interest reaches a certain level of contrast. This method of imaging is primarily used to evaluate arteries, such as the aorta, pulmonary artery, cerebral and carotid arteries. Images acquired from a bolus track, can be manipulated into a maximum intensity projection (MIP) or a volume rendered image (VRI).