MRI of the brain: how are they doing?
For a long time the study of pathologies of the headThe brain was hampered by the lack of instruments to show an objective picture. After the invention of the MRI method, which gives accurate images of internal organs, medical diagnostics made a significant step forward. And what is an MRI of the brain, how does this examination?
MRI is Magnetic Resonance Imaging. During the examination with a powerful magnetic field, pulse-radio frequency and computer receive an image. The device does not use X-rays: this procedure is absolutely harmless.
The MRI device is surrounded by a roundmagnet, a cylindrical tube and a movable plane on which the patient lies. There are open devices on the sides, convenient for those who are overweight and who suffer from claustrophobia.
Where do the MRI of the brain? This is very expensive equipment, so they have only large diagnostic centers.
Good image quality is obtained on tomographs with a magnetic field induction of 1.0 Tesla. Survey on devices with a lower field will be cheaper, but not high enough.
The procedure is as follows: The patient is placed on a moving plane, and the device is placed around the head. The peculiarity lies in the fact that it is absolutely necessary to lie down. To fix the body can use belts and pillows.
Sometimes, an imaging-enhancing contrast agent is required to be inserted into the vein.
MRI of the brain lasts about 45 minutes. Therefore, small children are anesthetized.
During the examination, there are no unpleasant sensations. The patient may experience a slight heating of the area under study.
After MRI there are no side effects. If they occur, then as a reaction to anesthesia (coordination disorder, nausea) or to a contrast agent (rare cases of allergy).
MRI of the brain allows you to identify:
- condition of the blood vessels of the brain;
- multiple sclerosis, other diseases of the nervous system;
- contusion of the head;
- violation in the inner ear and in the eye.
- problems in the pituitary gland;
- deviations in the development of brain structures.
Knowing what an MRI of the brain is like doing this procedure, remember the contraindications. They are the presence of prostheses with metal parts, implants, pacemaker.