What is arteriography?

Arteriography is indeed characterized by the insertion of a catheter into an artery, which is then carefully threaded through the vascular system to the area of interest, such as the carotid artery. This procedure is often utilized to visualize the arteries and assess conditions related to blood flow, obstructions, or abnormalities. During arteriography, a contrast dye is typically injected through the catheter, allowing for clearer imaging on X-rays or fluoroscopy. This technique is crucial for diagnosing vascular diseases, planning surgeries, or monitoring the effectiveness of treatments.

The other options do not accurately describe arteriography. The first option mentions assessing heart function using electrical signals, which pertains more to electrocardiograms or echocardiograms. The third option refers to measuring blood flow through veins, a function associated with venography rather than arteriography. The fourth option implies a different imaging modality, such as MRI (Magnetic Resonance Imaging), which does not specifically focus on arteries or involve catheter insertion for contrast-enhanced imaging.