During the MRI of the pituitary gland the patient is lying down, face up. To ensure complete immobility of the patient, his head is fixed by means of specially designed fasteners - this is necessary to obtain a clear and qualitative MRI image.
The surface with the patient lying on it is loaded into the capsule of the tomograph, while the magnetic frame should be at the site of the projection of the investigated area.
During the procedure, the patient is completely alone: the doctor performs manipulations behind the wall, in front of the monitor, but can talk to the subject through a "hands-free" connection. If the diagnosis is carried out by the child, it is allowed to simultaneously find in the immediate vicinity of one of the relatives.
The procedure of MRI of the pituitary gland can last an average of 45 minutes. However, this time can vary, depending on the number of required images, the class of the device, and also whether the contrast gain was applied.
MRI of the pituitary gland with contrast
The doctor can make images obtained with MRI of the pituitary gland more informative if he uses the introduction of contrast - a special substance that is injected into the circulatory system by injection. What does it give? When contrasting, the substance injected into the bloodstream allows the doctor to visualize the entire vascular network at the desired site. Practically in all cases, this makes it possible to assess the location and size of the lesion, to determine the presence of a connection with nearby organs, and to determine the intensity of the blood flow.
MRI of the pituitary gland with contrast is often prescribed to patients who are undergoing surgery to remove tumor formations in this part of the brain. Contrast substance accumulates in areas with increased blood supply - for example, in tissues in which the tumor process is actively developing. As a result, the necessary visual contrast is created, which makes it possible to see a tumor even of a small size.
Of the most common contrast substances, one can name preparations based on gadolinium salts (Magnevist, Omniskan and others), less often - mainly with CT, iodine preparations (Omnipak, Hexabrix, etc.) are used.
MRI of the pituitary gland without contrast or contrast?
The doctor can prescribe to the patient a simple procedure for the pituitary MRT, or MRI using contrast enhancement. As a rule, paramagnetic substances are used for this, which are introduced by intravenous injection immediately before the procedure. The amount of the drug administered is determined individually, based on the weight of the patient.
Is it necessary to use contrast enhancement? This is determined on an individual basis. If you want to define clear boundaries of the tumor, its structure, the state of healthy tissue near the tumor, then the use of contrasting is fully justified. Most often, contrast is used in patients who are being prepared for an operation to remove tumors of the pituitary gland.
MRI of the pituitary gland of the Turkish saddle
During the MRI of the pituitary gland, the doctor must differentiate pathological foci, given their location. If the pathological inclusion is located in the area of the Turkish saddle, then the adenoma of the pituitary gland can be diagnosed, and for localization over the saddle, craniopharyngioma, meningioma, astrocytoma, aneurysm.
Also, the "empty Turkish saddle" syndrome, which is characterized by a defect in the diaphragm and degenerative changes in the pituitary gland, can be identified.
The listed diseases are considered very serious. They manifest themselves by such symptoms as severe persistent headaches, thyroid dysfunction, adrenal and cardiac disorders, and autonomic nervous system failures.
No other type of study will allow to obtain such information about the disease, which is provided by the MRI of the pituitary gland. Therefore, if there are indications for the procedure, then do not delay. Even if any pathologies are found, the chances of recovery are always very high.
MRI of the pituitary gland to the child
If a doctor prescribes a pituitary MRT to a child, it usually does not occur before 5-6 years of age. To obtain a high-quality image from a tomograph, the patient should remain stationary while inside the device. Provide a steady state to a small child is very difficult. In addition, he may be frightened while in an enclosed space.
To avoid these difficulties, children can use an open access device to carry out MRI. However, even with such an investigation, the child should be as immovable as possible.
Often, when examining children to parents or other close people, the baby is offered to be present during the procedure. To do this, the person who will be next to the child must remove all metal accessories and clothing from himself.
If the child is restless or moody, then in some cases, before the procedure, it is recommended that special sedatives be introduced to calm the baby and ensure the normal quality of the pictures.