Angiography catheter sites

Angiography is a procedure doctors do to look at blood vessels in the body.

• First, the doctor puts a thin tube or "catheter" through the skin and into a blood vessel. They move the tube to the part of the blood vessel that is narrow or blocked. They use the catheter to inject a special dye called "contrast" into the blood vessel.
• Then, they do a type of imaging called "fluoroscopy" to see inside the body. Fluoroscopy is a moving X-ray. The dye shows up on the X-ray and shows how blood moves through the body. This can show if a blood vessel is blocked, damaged, or abnormal.