Which imaging test uses a catheter inserted into a carotid artery to visualize cerebral blood vessels with dye?

Which imaging test uses a catheter inserted into a carotid artery to visualize cerebral blood vessels with dye?

• A. MRI
• B. X-ray
• C. Arteriography
• D. CT Scan

Answer: (C)

Arteriography is the imaging test that visualizes cerebral blood vessels by threading a catheter into a carotid artery and injecting a radiopaque dye. The dye highlights the arteries on X-ray images, letting doctors see the pathway of the vessels and identify problems like aneurysms, stenosis, or malformations. This approach is invasive and distinct from MRI or CT, which map brain tissue rather than outlining vessels with a catheter-delivered dye, and from plain X-ray, which doesn’t reveal the vessels with contrast in the same targeted way.

Arteriography is the imaging test that visualizes cerebral blood vessels by threading a catheter into a carotid artery and injecting a radiopaque dye. The dye highlights the arteries on X-ray images, letting doctors see the pathway of the vessels and identify problems like aneurysms, stenosis, or malformations. This approach is invasive and distinct from MRI or CT, which map brain tissue rather than outlining vessels with a catheter-delivered dye, and from plain X-ray, which doesn’t reveal the vessels with contrast in the same targeted way.