Angiography

With the angiography one can represent vessels in the body exactly. When to use this study and how it works, read here!

Angiography

In the angiography Vessels are visualized using diagnostic imaging techniques such as X-rays, magnetic resonance imaging (MR angiography) or computed tomography (CT angiography). The doctor can thus diagnose and assess vascular diseases. Read all about the angiography, how it is done and the risks it presents.

Product Overview

angiography

  • What is an angiography?

  • When do you perform an angiography?

  • What do you do with an angiography?

  • What are the risks of angiography?

  • What do I have to consider after an angiography?

What is an angiography?

Angiography is a radiological examination in which the vessels are filled with contrast medium and visualized using X-ray, magnetic resonance tomography or computed tomography and imaged on the so-called angiogram. Depending on the type of vessel, the angiography of the arteries (arteriography), the veins (phlebography) and the lymph drainage pathways (lymphography) are differentiated.

When do you do an angiography?

Angiography is used to diagnose illnesses associated with narrowing or occlusion of the vessels.

Angiography: heart

Angiography on the heart is also known as coronary angiography. It makes the coronary vessels visible, which can be changed or closed in the context of a coronary heart disease or a heart attack. In addition, the heart interiors can be displayed and their size and function can be assessed.

Angiography: Eye

With the help of so-called fluorescence angiography, the doctor can diagnose age-related macular degeneration (retinal disorder) by assessing the fine blood vessels of the retina. Instead of the contrast agent, a special green dye (fluorescein) is used.

Angiography: brain

With the cerebral angiography (Latin: Cerebrum = brain), both the blood vessels in the brain, as well as the supplying vessels in the neck area represent, if there is a suspicion of brain tumors, cerebral hemorrhage or vascular disease.

Angiography: legs

The arteriography of the leg and pelvic vessels serves to detect vascular constrictions, for example in diabetics. The venography is carried out in cases of suspected thrombosis and treatment planning in convulsive spasms.

If there is a contrast medium incompatibility can be carried out on the legs of a CO2 angiography, in which the contrast agent is replaced by carbon dioxide.

For these diseases, the examination is important

  • aneurysm
  • arteriosclerosis
  • carotid stenosis
  • cerebral hemorrhage
  • renal artery stenosis
  • Raucherbein
  • Raynaud's syndrome
  • stroke
  • Vena cava syndrome
  • venous insufficiency

What do you do with an angiography?

Before the actual examination, your doctor will make a history and explain the risks and benefits of the procedure. In addition, the blood values ​​are measured and tested for a possible contrast agent allergy.

In conventional angiography, a thin plastic tube (catheter) is first inserted into the artery, vein or lymphatic vessel, usually under local anesthesia, and advanced to just before the vessel section to be examined. After injection of the contrast agent that fills the vessels, the corresponding body region is X-rayed. The contrast agent appears white on the x-ray as it absorbs the x-rays. Thus, the vessel interiors are distinguished on the angiogram. Finally, the catheter is removed and a pressure dressing applied over the puncture site.

A special form is digital subtraction angiography, in which images are taken before and after the contrast agent distribution. A computer removes identical areas on both images, making the changes in the contrast-filled vessels particularly visible.

In contrast, the contrast agent in CT angiography and MR angiography need not be injected directly into the vessel to be presented, but is usually administered via a brachial artery or arteria. For time-of-flight MR angiography (TOF angiography) no contrast agent is needed, as the images are created by the magnetization of fresh incoming blood.

More about the symptoms

  • echolalia
  • virilization
  • dizziness
  • cyanosis
  • facial paralysis
  • neglect
  • delirium
  • coma
  • amnesia
  • apraxia

What are the risks of angiography?

Angiography is a relatively uncomplicated study. Injecting the contrast agent may cause a sensation of warmth or an unpleasant taste in the mouth. These harmless side effects disappear immediately after the injection.

In rare cases, individuals are hypersensitive to the contrast agent or develop an allergic reaction.Allergy as well as renal insufficiency or hyperthyroidism (hypothyroidism) must be clarified before the examination, as in these cases no contrast agent may be given.

Vascular puncture may result in bleeding, bruising, thrombosis (clots), emboli (vascular occlusion by thrombosis), vascular injury, or infection.

What do I have to consider after an angiography?

After angiography You should take care and drink as much as possible so that the contrast medium is eliminated quickly. In addition, you should avoid heavy physical work in the following days. If you suddenly experience dizziness, headache, nausea or palpitations, please notify a doctor immediately.


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