What diagnostic test is combined with cardiac catheterization to visualize an artery after injecting a contrast dye?

The correct choice is arteriography, which is indeed the diagnostic test used in conjunction with cardiac catheterization to visualize arteries following the injection of contrast dye.

Arteriography specifically refers to the imaging of arteries, and it provides detailed pictures that help in assessing conditions affecting these blood vessels. During the procedure, a catheter is inserted into the blood vessel, typically through the groin or wrist, and advanced to the area of interest. Once the contrast dye is injected, imaging technology captures the flow of the dye, allowing for visualization of the arterial anatomy, blockages, or abnormalities.

This diagnostic technique is critical in cardiology as it allows healthcare professionals to visualize blood flow and identify issues such as coronary artery disease, aneurysms, or the presence of clots. It plays a significant role in planning potential interventions or surgeries.

While angiography is often used interchangeably with arteriography in casual conversation, technically speaking, angiography refers to the general imaging of blood vessels, which includes both arteries and veins. Therefore, arteriography is the more specific term that directly addresses visualizing arteries after the introduction of contrast dye. Other options like ultrasound and CT scans do not specifically combine with cardiac catheterization in the same manner for this particular purpose