Angiography is a type of X-ray used to check the blood vessels.
Blood vessels don't show up 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 spot 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 be used to help diagnose or investigate a number of problems affecting the blood vessels, including:
Angiography may also be used to help plan treatment for some of these conditions.
Angiography is carried out in a hospital X-ray or radiology department.
For the test:
The test can take between 30 minutes and two 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 is also a very small risk of more serious complications occurring, 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 angiogram, depending on which part of the body is being looked at.
Common types include:
There is also a type of angiography used to check the eyes called a fluorescein angiogram. This is different to the angiograms mentioned above and isn't covered in this topic.