Angiography

[Monty]

In angiography, x-rays are used to produce detailed images of blood vessels. It is sometimes called conventional angiography to distinguish it from computed tomography (CT) angiography and magnetic resonance angiography. During angiography, doctors can also treat disorders of blood vessels. Angiography, although invasive, is relatively safe.

Angiography can provide still images or motion pictures (called cineangiography). Cineangiography can show how fast blood travels through blood vessels. (See also Coronary Angiography.)

[Ernesto]

Examination by X-ray of blood or lymph vessels, carried out after introduction of a radiopaque substance.

[Dianne]

Angiography is sometimes called conventional angiography to distinguish it from CT angiography (CTA) and magnetic resonance angiography (MRA). Angiography provides detailed images of blood vessels, commonly those in the heart, lungs, brain, and legs. Angiography can provide still images or motion pictures (called cineangiography).

IV contrast is injected through a catheter inserted into a blood vessel that connects with the vessel to be imaged. A local anesthetic or a sedative may be used. If the catheter is inserted into an artery, the insertion site must be steadily compressed for 10 to 20 minutes after all instruments are removed to reduce the risk of bleeding at the puncture site. Patients may also need to lie flat for several hours or be hospitalized to reduce this risk.

Angiography, although invasive, is relatively safe.