Check vessels of the brain with angiography
Angiography - a method of research vascular, with a view to ascertain their condition and operation. It is performed using x-ray, during which uses a special contrast agent. When there is suspicion of vascular brain pathology or need a good diagnosis is angiography of brain vascular (cerebral angiography).
When doing angiography of cerebral vascular
This procedure is performed if it is necessary to identify the source of bleeding, if you suspect a brain tumor, for the presence of stenosis, thrombus or aneurysm, which lead to the violation of cerebral circulation. With angiography can reveal excessive vascular tortuosity or anomalies in their structure.
Indications for angiography of cerebral vascular
- Complaints causeless headaches and dizziness
- The emergence of regular or periodic nausea,
- Vegetative-vascular dystonia,
- The need to study the problems following traumatic brain injury,
- Patient complaints on pain in the neck,
- The presence of ischemic disease of cerebral vascular,
- A history of stroke or mini stroke.
With the help of cerebral angiography, it is possible not only to detect vascular disorders, but also to determine how they are expressed and disseminated.
This form of diagnosis gives the opportunity to evaluate venous outflow of blood, condition of blood circulation in vascular bypass routes (collaterals). All this is necessary for prevention, diagnosis and treatment of many diseases associated with circulatory disorders in the vascular of the brain.
Contraindications to the procedure
As to any other procedure for angiography of cerebral vascular there are contraindications. They relate both to the procedure and with contrast substance injected into the bloodstream. As a contrast agent are used compounds of iodine. The amount of contrast depends on the volume of the survey, it can be 5-10 ml.
Cerebral angiography is done in the following cases:
- allergic reactions to iodinated contrast agents,
- individual intolerance,
- acute or chronic renal failure that prevents the use of a contrast agent,
- exacerbation of chronic diseases,
- pregnancy or lactation,
- diseases associated with bleeding disorders,
- myocardial infarction,
- the age of 2 years,
- mental illness.
The types of cerebral angiography
Depending on the extensiveness of the research conducted the review or selective angiography of brain vascular. When the overview angiography a contrast agent is injected into the bloodstream through a large artery feeding the brain. Due to the spread of the contrast with the blood in the smaller vascular becomes possible to visualize. Selective angiography is performed aiming diagnosis. A contrast agent is delivered locally to the artery that feeds only a certain part of the brain.
At this stand diagnosis
There are also direct (carotid and vertebral) and indirect cerebral angiography. Carotid angiography involves injection of contrast into the carotid artery. When vertebral injection of contrast is performed through the vertebral artery. The indirect method means that access to the vertebral or carotid artery is carried out through another large vessel, it may be femoral or brachial artery. Then usual long catheter and injected contrast.
The method of obtaining information angiography of brain vascular may be a traditional x-ray, computed (on the basis of x-ray images) and magnetic resonance.
How is the survey
- The aseptic conditions of the procedure,
- The presence of a brigade of doctors: a radiologist, an anesthesiologist, kardioreumatology.
The process of examination of the patient takes about half an hour. The procedure is considered invasive, because there is a puncture to access an artery, where the catheter is to be introduced. Therefore, angiography of cerebral vascular is often combined with other interventions in the body that occur through access via major blood vascular, for example, with the removal of the aneurysm.
To avoid complications associated with the penetration of infection through the place of catheterization, the skin is treated with antiseptic solution. Then local anesthesia. Puncture (puncture) of the vessel is performed with a special needle. Through a flexible catheter is introduced to supply contrast. Usually the puncture is made in the places through which it is easy to get to the desired vascular.
Through a special catheter into the blood of injected contrast agent. After contrast enhancement is performed series of radiographic images of cerebral vascular.
These pictures show different phases of circulation: capillary, arterial and venous. Modern medical equipment allows to make layered shotsthe blood vascular of the brain for further formation of three-dimensional images using special computer programs.
When the shooting is completed, the patient removes the catheter, stops the bleeding. Next comes the decoding of the received information. A transcript and a statement or clarification of the diagnosis involved the vascular surgeon and the radiologist.
The patient after the procedure, angiography should for some time remain under the supervision of medical professionals.
Do I need any special preparation for the procedure
Preparations for the angiography of cerebral vascular is very important for the quality of the procedure. Adult patients should be familiar with the process, the objectives of the study and its possible consequences. Only then they can make an informed decision, which shall be in writing. In the case when cerebral angiography need a minor patient, all decisions are made by parents.
Stages of preparation
- Information and written consent of the patient,
- The introduction of sedatives before the procedure to relieve anxiety and tension,
- The provision of research on an empty stomach (need to abandon the dinner before and Breakfast the day of the procedure).
If you have experienced allergic reactions to contrast agents, but the necessity of this examination can be applied ANTIALLERGICS. In the excessive excitement of the patient sedatives can be assigned to a second time, on the day of the procedure of angiography of brain vascular.
Advantages of cerebral angiography
- The ability to create a three-dimensional image,
- Visualization of blood vascular, which allows the doctor to detect blood clots, hematomas, aneurysms,
- The possibility of individual approach to the patient, and therefore accurate diagnosis.
Modes and programs of this examination can be very wide, so you can always choose the optimal variant in each particular case. The absence of inaccuracies in the diagnosis allows to promptly and accurately identify problem areas in the vascular to understand why disease or disorders in the blood vascular of the brain. Adequate diagnosis is the main condition of proper treatment.
Similar procedure: rheovasography.