What is the key effect of the vasodilator used in imaging?

The primary effect of using vasodilators in imaging procedures is to enhance visualization of vascular structures. Vasodilators work by relaxing the smooth muscles in the blood vessels, leading to the dilation or widening of these vessels. This dilation results in increased blood flow through the vascular system, which is crucial in imaging studies such as angiography. By improving blood flow and filling smaller vessels, the contrast between structures becomes more pronounced, making it easier for radiologists to visualize and assess vascular anomalies, blockages, or other conditions. This enhances the overall diagnostic quality of the imaging study, allowing for more accurate and reliable interpretations.