That shows an MRI of the brain vessels?
The abbreviation MRI stands for magnetic resonance imaging. It is a modern methods of instrumental diagnostics, which allows to visualize the tissue structure of the study area and to identify the presence of various pathological inclusions. This study has been widely used to diagnose changes in the vessels of the brain in various diseases.
The principle of the imaging technique
The method of MRI is a physical phenomenon in which atomic nuclei absorb magnetic field, and in response, emit electromagnetic wave (nuclear resonance). With the help of modern equipment check rejected under magnetic field, radio waves with subsequent imaging of the tissue structure of the investigated area of the body.
That shows an MRI of the brain vessels?
To date, the diagnosis applied MRI of the brain and blood vessels. The study allows the layers to visualize the investigated area of the body. There are several types of MRI, in which it is also possible a more detailed study. These include:
- Defining the functional state of the arteries and veins of the brain with the help of conducting this type of imaging with vascular program (includes additional digital processing of the received data). In vascular mode of research increasingly focuses on functional status, in particular on the volume of the blood, pulsation of arteries, as well as the completeness of the outflow of venous blood.
- MRI angiography blood vessels – a technique with the additional introduction of contrast compounds, which largely emits electromagnetic waves to influence the magnetic field. Angiography allows to study in more detail the form of the arteries and veins.
- The study of the brain – focuses on the state directly tissue, particularly their structure and possible presence of pathological inclusions (tumors).
To identify the cause of disturbances of structure or of functional status disorders of blood flow in the brain, additionally, it may be an MRI of the neck vessels, as they are responsible for the blood supply of the head.
Hypertension no longer a death sentence?
The cardiologist said that there is finally a cure for hypertension …
MRI of the vessels of the head is indicated for the diagnosis of a number of pathological processes with disruption of the blood supply to the tissues of the brain. These include:
- Tumors of the arteries or veins, including the hemangioma.
- Congenital malformations (vascular malabsorption).
- Suffering a head injury, accompanied by the consequences of a violation of the functional state of the vasculature and innervation of the walls of arteries.
- Various infectious and inflammatory diseases of the brain (encephalitis) and meninges (meningitis).
- Ischemic (due to a sharp violation of nutrition) or hemorrhagic (after hemorrhage in the tissue) brain stem stroke.
Usually visualization of brain tissue with blood vessels is appointed by the doctors of different specialties in case of presence of symptoms, including pronounced periodic headaches, disturbances of consciousness, frequent and pronounced vertigo and tinnitus of unknown origin. Also, MRI allows a more accurate diagnosis in those cases when other methods of instrumental diagnostics have not given reliable results.
What brings MRI?
Using qualitative visualization of the structure of brain tissues, arteries and veins, your doctor may identify a number of indicators and diagnostic criteria of the pathology, which include:
- Structural changes in the brain tissue and pathologic entities.
- Violation of the integrity of the walls of the veins or arteries.
- Atherosclerosis (deposition of cholesterol in the arterial wall with the formation of atherosclerotic plaques, which reduce clearance).
- Signs of multiple sclerosis – a degenerative-dystrophic process, which is accompanied by a gradual substitution of narocito (cells of the nervous system) connective tissue.
- Aneurysm – a pathological formation of extensions in the form of protrusions of the wall.
- Malformation of cerebral vessels of different caliber – a malformation accompanied by the formation of a vascular plexus in the form of a node, which is characterized by weak walls and significantly increases the risk of bleeding.
- Visualization of the presence of intravascular thrombi and accurate determination of their location for subsequent treatment.
- Detection of intracranial hematomas (hemorrhages), which may be the result of trauma or hemorrhagic stroke.
MRI is a modern method of instrumental diagnostics, which has a number of advantages. In particular, magnetic resonance imaging refers to a safe, highly informative, non-invasive (characterized by the absence of damage to tissues during the study), precise and informative (the technique allows to visualize even small changes) diagnostic techniques.
Thanks to the informative value and safety of magnetic resonance imaging has become widespread in clinical medicine. She can diagnose a significant number of diseases, including in children and pregnant women.