Arteriography (Angiography): Procedure Overview
Arteriography, also known as angiography, is a medical imaging procedure that involves the use of contrast dye and X-rays to visualize the blood vessels, particularly arteries. This diagnostic technique helps healthcare professionals assess the structure and function of the arteries, identify blockages or abnormalities, and plan appropriate interventions. Here is an overview of the procedure:
1. Preparation:
– The patient is typically asked to fast for a few hours before the procedure, especially if the abdominal or pelvic arteries are being assessed.
– The patient may need to remove clothing and wear a hospital gown.
– An intravenous (IV) line is usually inserted into a vein for contrast dye administration.
2. Patient Positioning:
– The patient is positioned on an examination table, and the specific area to be examined is exposed.
3. Local Anesthesia:
– The skin over the area where the catheter will be inserted is cleaned and numbed with a local anesthetic.
4. Catheter Insertion:
– A thin, flexible tube called a catheter is inserted into an artery, usually in the groin (femoral artery) or wrist (radial artery). The catheter is threaded through the blood vessels to the area of interest.
5. Contrast Dye Injection:
– Contrast dye is injected through the catheter into the arteries. This dye makes the blood vessels visible on X-ray images, allowing for detailed visualization.
6. X-ray Imaging:
– X-ray images are captured as the contrast dye moves through the arteries. The fluoroscope, a specialized X-ray machine, provides real-time images of blood flow and vessel structures.
7. Series of Images:
– The imaging process involves taking a series of X-ray images at different angles to obtain a comprehensive view of the blood vessels.
8. Evaluation of Images:
– The radiologist or vascular specialist evaluates the images to identify any abnormalities, blockages, or other vascular conditions.
9. Post-Procedure Care:
– After the arteriography, the catheter is removed, and pressure is applied to the insertion site to minimize bleeding.
– The patient is monitored for a short period to ensure there are no complications.
10. Recovery:
– Patients are usually observed for a few hours after the procedure. Depending on the type of arteriography performed, some patients may be able to resume normal activities on the same day.
Risks:
– While arteriography is generally safe, there are some risks, including allergic reactions to the contrast dye, bleeding or infection at the catheter insertion site, and, rarely, damage to the blood vessels.
Applications:
– Arteriography is commonly used to assess conditions such as atherosclerosis, aneurysms, arterial blockages, and other vascular abnormalities. It plays a crucial role in the diagnosis and planning of interventions for various vascular disorders.