Angiography is an X-ray examination of blood vessels.
From the usual research, this method differs in that the blood vessels introduce a contrasting substance - an organic compound of iodine, without which X-ray vessels will not be visible.
Conduct an angiography after a general clinical examination of a patient, in cases where another diagnostic method was not successful.
With angiography of the vessels, defects can be found in their development and damage (narrowing, aneurysms, malformation), perforation, as well as defects and damage to various internal organs, malignant and benign formations.
Variants of angiography of vessels
Depending on the task, the angiography of the brain, arteriography, venography, angiography of the heart, lymphography, fluorescence angiography are distinguished.
Investigations of brain vessels are called Cerebral angiography - after the introduction of contrast in a short period of time, make several angiograms, which reflect the venous, arterial, capillary phases of the blood circulation.
Angiography of the brain Can be direct and indirect. Allocate carotid and vertebral straight cerebral angiography. Carotid method is the most commonly used - the contrast is injected into the neck, into the carotid artery. Vertebral angiography of the brain is characterized by the fact that the iodine compound is injected into the vertebral artery. With indirect cerebral angiography, the drowsiness or vertebral artery approach through another large vessel, for example through an artery on the thigh: enter a long catheter and inject a contrast.
Arteriography - a method of diagnosis of arteries, which allows to detect neoplasms located around blood vessels, blockage and narrowing of the arterial lumen, various violations of the bleeding.
Venography Designed for diseases of the veins on the arms and legs. The study allows you to see deeply arranged and superficial veins in the picture, their length and localization, to diagnose thrombosis or varicose enlargement. In some cases venography is prescribed for the evaluation of heart rhythm pathologies, definition of heart failure. More detailed information on heart disease is given by the angiography of the heart - a study by which the chambers of the heart and arteries are studied.
Conduct Angiography of the heart For medical and diagnostic purposes. With its help it is possible to find out various vascular pathologies (thrombosis, narrowing of the expansion, blockage), to estimate blood pressure in the heart and pulmonary artery, myocardial contractility.
Lymphography Is conducted for the study of lymphosystems and is prescribed for malignant tumors of the uterus, ovaries. With this study, you can assess the degree of disease and the effectiveness of the chemotherapy or lymphatic drainage surgery.
Fluorescent Angiography - is a method of research of eye vessels and fundus in inflammations and dystrophic processes in the vasculature and retina, hypertension, diabetic retinopathy, glaucoma. In addition, using fluorescent angiography, they study the tuberous conjunctiva and iris in various diseases. In contrast, sodium fluorosine is used - 10% solution. Enter the contrast in the vein on the elbow - 3-5 ml, but before that, it is shown how it is tolerated by the patient.
Contraindications to angiography
It is impossible to conduct angiography of blood vessels in acute infections and inflammatory diseases, in severe conditions, with mental illness, serious renal, hepatic and heart failure, with iodine allergy.