What is the purpose of a bolus chase run in imaging?

The purpose of a bolus chase run in imaging is to ensure consistent contrast distribution within the vascular system or specific anatomical structures. During this imaging technique, a rapid injection of contrast material is followed by imaging sequences that capture the passage of the contrast agent through the area of interest shortly thereafter.

This method is particularly important in vascular imaging, such as during CT angiography or other contrast-enhanced studies, because it allows for a clearer understanding of blood flow dynamics and the accurate visualization of vascular structures. By using the bolus chase approach, radiologists can obtain higher quality images as the contrast enhances the visibility of the vascular anatomy and helps delineate any abnormalities, such as blockages or malformations.

While other options touch on relevant imaging concepts, they do not directly relate to the specific purpose of a bolus chase run. For example, measuring blood viscosity does not pertain to the function of a bolus chase; preventing radiation exposure is more about safety protocols in imaging rather than the operation of this specific technique; and visualizing soft tissue anomalies is typically not the primary aim of a bolus chase run, which focuses instead on enhancing vascular visibility.