Angiography is a method of examining blood vessels to accurately assess changes inside the vessels.
It is based on X-rays. Since ordinary X-rays do not show the inside of the blood vessels well, a suitable contrast is used. The contrast fills the vessels and strongly absorbs the X-rays, making it visible on the images as a uniform shadow, following the course of the vessels.
The examination is used primarily to diagnose thrombotic changes in the vessels and to visualize abnormal structure and course of the blood vessels. A special type of angiography is coronary angiography, which allows the evaluation of coronary vessels in the heart.
Preparation for angiography
- You should arrive for the test on an empty stomach.
- You must tell the doctor if you are allergic to any medication.
- You will be asked to sign a consent form
- contrast is injected before the examination.
Course of the angiography examination
During the examination the patient is placed in a lying position on a movable table. The area to be examined is anesthetized, and then the doctor inserts a guidewire into a large vessel with a special needle, through which a catheter is then inserted. While contrast is being injected through the catheter, a series of about 20 X-ray images are taken. The patient should lie still during the examination. After the examination, a tourniquet should be applied to stop bleeding.
The examination lasts from 1 to 2 hours.
NOTE: Any discomfort occurring during the examination should be reported to the doctor.
After the examination, the patient should remain in the hospital for 24 hours. During this time you should rest and not do any major, unnecessary movements. The decision whether angiography is necessary is made by your doctor.
Indications for angiography
- liver tumors
- coronary artery disease
- brain tumors, in order to visualize pathological vessels
- suspicion of aortic aneurysm
- vascular changes in the brain
- funduscopic examination
- atherosclerotic lesions in the carotid arteries.
- Contraindications to angiography
Hyperthyroid goiter with allergy to iodine agents
high blood pressure
Contraindications to angiography
- Hyperthyroid goiter with allergy to iodine agents
- high blood pressure
- hemorrhagic diathesis.