Angiography is a type of X-ray used to check blood vessels.
Blood vessels do not show clearly on a normal X-ray, so a special dye needs to be injected into your blood first.
This highlights your blood vessels, allowing your doctor to see any problems.
The X-ray images created during angiography are called angiograms.
Angiography is used to check the health of your blood vessels and how blood flows through them.
It can help to diagnose or investigate several problems affecting blood vessels, including:
Angiography may also be used to help plan treatment for some of these conditions.
Angiography is done in a hospital X-ray or radiology department.
For the test:
The test can take between 30 minutes and 2 hours. You'll usually be able to go home a few hours afterwards.
Read more about what happens before, during and after angiography.
Angiography is generally a safe and painless procedure.
But for a few days or weeks afterwards it's common to have:
There's also a very small risk of more serious complications, such as an allergic reaction to the dye, a stroke or a heart attack.
Read more about the risks of angiography.
There are several different types of angiography, depending on which part of the body is being looked at.
Common types include:
There's also a type of angiography that's used to check the eyes, called fluorescein angiography. It's different to the other types of angiography and is not covered in this topic.