Modern mri. Types of MRI machines

After the invention of magnetic resonance imaging, the popularity of such a device rose to a high level. This is due to the fact that such devices are capable of diagnosing all human organs and tissues, excluding the development of serious diseases. The basis of the MRI procedure is the appropriate equipment, presented in the form of a tomograph. The tomograph is a large capsule, inside of which there is free space. Such a unit saves every day not hundreds, but thousands of people around the world, providing an opportunity to make accurate diagnoses. What are tomographs, as well as the effect of MRI power on diagnostic procedures.

Characteristics of the tomograph

Patients often have a question about which tomograph is better for MRI to choose so that the results are as accurate as possible? Of considerable importance is the power of the unit, as well as its structural structure. The main characteristics of MRI include the following factors:

Power. This value for tomographs is measured in Tesla. Tomographs are divided into four types according to their power: low-field, medium-field, high-field and ultra-high-field. We will dwell on the capacities of the units in more detail below.
Research time. The duration of the study is influenced by such a factor as the power of the tomograph. The more powerful the unit, the faster the diagnostics.
Possibility of using contrast agents. If the MRI examination procedure is performed without the use of contrast agents, then the final result will not be as accurate as when contrast is used.
Possibility of diagnostics of various organs and systems. Appropriate devices are selected depending on which part of the body needs to be examined.
Types of tomographs. Tomographs are of two types: open and closed type. The open type is intended mainly for obese people, as well as patients suffering from claustrophobia.
Patient weight. The weight of the patient is essential, since standard ones are designed for weights from 80 to 200 kg. For patients with a larger body weight, special veterinary devices are used.
Product manufacturer. The most popular models of tomographs are brands such as Siemens and Philips.

What parts of the body can be diagnosed on an MRI

With the help of magnetic resonance procedures, it is possible to examine the following human organs and systems:

head;
vascular system;
bone tissue;
joints;
spine.

It should be noted that the MRI procedure allows diagnosing the whole organism, revealing all pathologies and abnormalities. But here it is important to note that the more organs are examined in one session, the less effective the device is. Let us consider in more detail how the units differ depending on their power.

Low-field tomographs

Low-floor units have a power limit of 0.3 to 0.5 Tesla. These are quite good units, the main advantage of which is significant energy savings. The cost of the examination procedure on low-field tomographs is several times lower than on high-field ones. Of the advantages of low-field tomographs, this is all.

On low-field units, low-quality images are obtained, which significantly affects the information content of the results. On such devices, small neoplasms may not be noticed, which will lead to the need to carry out diagnostics again. On the low-field magnetic tomograph apparatus, tractography of the brain pathways, as well as dynamic type angiography, are performed.

It is important to know! Low-field devices do not allow diagnosing tumors and aneurysms in the brain, so it is recommended to use more powerful equipment.

Mid-field tomographs

The power of mid-field devices varies from 0.5 to 1 Tesla. There are devices mainly in medical institutions of the state type. In private clinics, such units are not installed, since they practically do not differ from low-power ones, and their cost is similar to high-field types.

It is important to know! Mid-field tomographs have gained less popularity than low-power ones, so they can only be found in budget clinics.

High Power MRI Machines

The magnetic field strength of high-field units ranges from 1 to 1.5 Tesla. Experts recommend it is better to do MRI on high-voltage tomographs. To cool such units, a special type of coolers is used, presented in the form of a cryogenic helium substance.

Equipment of this type is one of the most popular, therefore it is used not only in the Russian Federation, but throughout the world. When asked which device is best for MRI diagnostics, we can safely say that these are high-field tomographs. Such units allow diagnosing any human organs and systems from the brain to the feet.

The scanning time of tomographs of this type is 1.5-2 times less than that of low-floor units. Devices with the “Tim” function are capable of diagnosing all human organs from head to toe. Equipment of this type costs from 350 to 500 dollars.

Ultra high-field devices

The power of such units is from 3 to 7 Tesla. These are sufficiently high power indicators that allow MRI of the spine to be performed in the most detailed form. The scope of such units is research complexes. Installing such machines in private clinics is not rational, since the cost of the procedure will increase by 3-4 times, which will affect the number of people who want to be examined.

A high degree of information content is a very important indicator in the diagnosis. Usually, the need for diagnostics on ultrahigh-field devices arises when it is necessary to study the brain in detail.

It is important to know! The doctor may prescribe an MRI to the patient if he has suspicions of a casuistic disease.

Summing up, it should be noted that in comparison with computed tomography, MRI is the most accurate, painless and safe way to diagnose human internal organs. From the foregoing, it follows that the power of the apparatus is an important factor that affects the accuracy of the final results. Patients, before agreeing to undergo an MRI, should make sure what type of equipment is installed in the office. Many patients resort to diagnostics on low-power or medium-power devices, which is due to the low cost of the procedure. In order for the doctor to be able to make a correct and accurate diagnosis, the MRI procedure must be carried out on a high-field unit.

The use of accurate diagnostic methods to detect the disease at the earliest stages is one of the main principles of modern medicine. Therefore, high-field magnetic resonance imaging 3 Tesla is prescribed quite often - this technique allows you to diagnose a variety of pathologies.

Indications for holding

High-field MRI is highly accurate and is prescribed:

For the initial examination;
In difficult cases;
To conduct studies that cannot be performed on less powerful tomographs.

The method gives a lot of photographs, where sections of organs are displayed. Reducing the distance between slices increases the accuracy of the result, as the chance of missing an important detail is minimized.

Diagnosis is difficult;
For scanning the vessels of the heart and brain;
For diagnostics of joints and internal organs.

MTR on a high-field tomograph provides a study in a short time.

The absence of radiation allows you to repeat the diagnosis as many times as necessary without harming the body.

Advantages of MRI diagnostics at the Central Clinical Hospital of the Russian Academy of Sciences

Safe, without radiation exposure, multiple re-execution of the study is possible
High diagnostic efficiency
Experienced doctors guarantee the accuracy of the diagnosis and the quality of the protocol

Contraindications

Since high-field MRI involves closed devices to ensure the proper level of field strength, diagnostics are not without drawbacks:

Restriction for the use of the device by the size of the patient - weight and waist circumference;
High noise level during operation;
The impossibility of examining patients if constant monitoring of the work of organs is required;
Difficulty using appliances for those who cannot lie still. Partially, this problem can be solved with the help of anesthesia.

All contraindications can be divided into two groups.

Absolute: the patient has electronic or metal implants, a pacemaker, or a bone fixation device.

Relative: pregnancy, claustrophobia, mental pathology, heart failure, serious condition.

In addition, tattoos with metal-containing dyes are a contraindication.

What is the difference between high-field MRI?

Diagnostic tomographs are of two types - open and closed.

The closed apparatus is similar to a large tube in which the patient is located during the examination. Diagnosis is made by means of a magnetic field.

Magnetic resonance imaging is a fairly common diagnostic procedure, which is carried out in almost all hospitals in Moscow. Public hospitals have backed up equipment, but even that can separate healthy organs from inflamed tissue. Modern clinics are equipped with more innovative equipment, but many still wonder where to get an MRI in Moscow?

Passing an MRI

MRI diagnostician

Head of the department, doctor of medical sciences.

Magnetic resonance imaging is prescribed in very rare cases in order to confirm the alleged diagnosis of the doctor and in order to determine the location of the tumor, damage to the tissues of internal organs, brain damage after a stroke, etc. Tomography is not able to give pain and negatively affect the human body. Compared to modern equipment that uses ultrasound, tomography shows more accurate results. Tomography is able to show organs from the inside in the form of cuts and at the same time it will not be visualized, bone tissue will not interfere.

The tomograph apparatus in most cases has the form of a large capsule, where the patient is placed using a movable table. Diagnostics is carried out for an hour and at the same time you can’t move, but lie in a motionless position and listen to the instructions of the technologist. If a person is afraid of closed spaces, tomography can be performed using anesthesia. In this case, the patient is strictly forbidden to eat and drink a few hours before the procedure.

Feelings during the examination are individual for each, a person during a tomography may experience nausea, warmth in the part of the body where the examination is performed, tinnitus, anxiety, slight tingling, etc. What you should definitely tune in to is a long and exhausting stay on the table, which can take up to 60 minutes. Any sensation should be controlled and announced to the technologist.

The contrast element has been used in magnetic resonance therapy for several years. Prior to this, the contrast was studied in detail and studied in relation to the human body, after which it was proved to be harmless and effective in providing information when scanning a particular human organ. Contrast is used intramuscularly, administered to the patient during tomography or immediately before it. With the use of this substance, the device shows significantly improved results and visualization of the affected tissues of the internal organs.

The patient will hear the preliminary results of the study immediately after the end of the procedure, and a more detailed description of the diagnosis on the second day with confirmation of the disease on the pictures taken. After an accurate diagnosis of the disease, the patient is prescribed high-quality and effective treatment.

The tomogram also has its own contraindications, which you should definitely talk to your doctor about, find out all the questions of interest up to the diet. In no case should diagnosis be ignored and postponed for a long time, otherwise the primary symptoms can turn into serious health problems.

Where is the best place to get an MRI?

The search for the best study can be searched for by patient reviews, which will suggest not only a good hospital or clinic, but also a good specialist who understands the results of a tomogram.

The quality and the most detailed results can be shown by an innovative technique that has gone through numerous studies and developments with the best approach to the human body. Making an MRI in Moscow with the help of new equipment will be a little more expensive, but it is worth remembering that a high-quality diagnosis and a correct diagnosis also depend on the specialists who perform the scan. So do not rely only on the expensive cost of the procedure and equipment. To conduct an MRI in Moscow, where it is better and inexpensive, you can find out from your doctor.

The price of the examination

The price of the procedure is already included in the cost of the procedure. The equipment is expensive to maintain and requires a lot of money to carry out even one diagnosis.

The cost of the study increases if the use of anesthesia is required. This will also require the presence of an anesthesiologist and the availability of anesthesia.

MRI, the cost of diagnostics in Moscow can be the most affordable for many patients, since almost everyone can present a medical insurance policy at the nearest clinic, which significantly reduces the cost of the procedure or the services provided.

MRI in Moscow price increases by half or even more when used during contrast diagnostics. Contrast is an innovative and expensive drug used in magnetic resonance imaging as a tool for better visualization of problem areas of tissues or internal organs.

Addresses of clinics in Moscow

Addresses of clinics with MRI equipment in Moscow:

Scientific center of Rosmedtekhnologii. The center has the latest MRI equipment in Moscow and is located at Profsoyuznaya street, house number 86.
Moscow Kuznetsov Center. In his practice, he uses a powerful apparatus for scanning people who are overweight or who are afraid of confined spaces. Location of the research center: Partizanskaya street, building 41.
specializing in neurosurgery. The Academy is located at the address: Moscow, 4th Tverskaya-Yamskaya street, 16.
The latest modern equipment is also available at the Diagnostic Medical Center No. 1. A medical institution should be looked for at the address: Miklukho-Maklaya street, house 29, building 2.

TOP of the best medical centers with MRI

Any metro station Sokol (9) Schukinskaya (8) Southwestern (7) Tushinskaya (7) Molodezhnaya (6) Maryina Roshcha (5) Dynamo (5) Prospekt Mira (5) University (5) VDNKh (5) Novoslobodskaya (5) Mayakovskaya (5) October Field (5) Belyaevo (5) Park of Culture (4) Begovaya (4) Frunzenskaya (4) Vernadsky Avenue (4) Paveletskaya (4) Kuzminki (4) Sokolniki (4) Tekstilshchiki (4) Belorusskaya (4) ) Volzhskaya (4) Krylatskoye (4) Kuntsevskaya (4) Otradnoye (3) Lyublino (3) Profsoyuznaya (3) Aviamotornaya (3) Kaluga (3) Novye Cheryomushki (3) Medvedkovo (3) Pushkinskaya (3) Kantemirovskaya (3) Kashirskaya (3) Serpukhovskaya (3) Polezhaevskaya (3) Voikovskaya (3) Petrovsko-Razumovskaya (3) Rizhskaya (3) Komsomolskaya (3) Kievskaya (3) Student (3) Airport (3) Sports (3) Academic (3) Dobryninskaya (3) Taganskaya (3) Troparevo (3) Konkovo (3) Elektrozavodskaya (2) Bibirevo (2) Slavyansky Boulevard (2) Nakhimovsky Prospekt (2) Street 1905 Goda (2) Trubnaya (2) Tsvetnoy Boulevard (2) Smolenskaya (2) Kropotkinskaya (2) Babushkinskaya (2) Nagatinskaya (2) Avtozavodskaya (2) Tulskaya (2) River Station (2) Skhodnenskaya (2) Ilyich Square (2) Rimskaya (2) Alekseevskaya (2) Planernaya (2) Dostoevskaya (2) Tverskaya (2) Kutuzovskaya (2) Krasnye Vorota (2) Volokolamskaya (2) Mitino (2) Pyatnitskoye highway (2) Savelovskaya (2) Cherkizovskaya (2) Shchelkovskaya (2) Exhibition (2) Zhulebino (2) Baumanskaya (2) Semenovskaya (2) Timiryazevskaya (2) Vykhino (2) Maryino (2) Dmitrovskaya (2) Ryazansky prospect (2) Sukharevskaya (2) Marxistskaya (2) Polyanka (2) Mendeleevskaya (2) Pervomaiskaya (2) Pionerskaya ( 1) Filevsky Park (1) Borisovo (1) Shipilovskaya (1) Chekhovskaya (1) Enthusiasts Highway (1) Sviblovo (1) Izmailovskaya (1) Novokuznetskaya (1) Tretyakovskaya (1) Barrikadnaya (1) Krasnopresnenskaya (1) Perovo ( 1) Volgogradsky prospect (1) Rokossovsky boulevard (1) Dmitry Donskoy boulevard (1) Novoperedelkino (1) Myakinino (1) Strogino (1) Arbatskaya (1) Business center (1) Lermontovsky prospect (1) Varshavskaya (1) Dubrovka ( 1) Proletarskaya (1) Altufyevo (1) Partizanskaya (1) Preobrazhenskaya Square (1) Novogireevo (1) Tsaritsyno (1) Orekhovo (1) Kitay-Gorod (1) Printers (1) Krasnogvardeyskaya (1) Nagornaya (1) Oktyabrskaya (1) Shabolovskaya (1) Cherepkovo (1) Kurskaya (1) Leninsky Prospekt (1) Yasenevo (1) Botanical Garden (1) Kolomenskaya (1) Volgogradsky Ave (1) Preobrazhenskaya Sq. (1) Okhotny Ryad (0) Southern (0) By price By rating

Like any other technique, the “model range” of magnetic resonance imaging devices includes tomographs with a variety of characteristics from economical models that are easy to maintain, to “flagships” with advanced diagnostic capabilities. People who are far from medicine usually do not understand the characteristics of medical equipment, so they choose a clinic for an examination based on such criteria as the cost of the procedure and its distance from home (or work).

Let's figure out which MRI machine is better, what characteristics of MRI tomographs you should pay attention to, and how these characteristics can be useful for the timely diagnosis of the disease.

Characteristics of various MRI machines

Pay attention to the following characteristics of the tomograph:

magnetic field strength, measured in Tesla;
the duration of the examination of one part of the body;
type of MRI machine;
the age of the device and its manufacturer.

The intensity of the magnetic field of the tomograph and the capabilities of the device

The resolution of MRI systems is determined by the intensity of the magnetic field of the device. Here you can draw an analogy with the camera. The better the camera, the clearer, brighter and more detailed the pictures are. With tomographs, everything is exactly the same. The better the device, the more detailed the images will be and the more informative the examination will be. The cost of such a device and the price of examination on such a device will be higher than on "budget" tomographs.

Let's look at the numbers.

Low-field tomographs: below 0.5 Tesla. Such devices make up the majority of all tomographs that clinics in Russia and the CIS countries are equipped with. They are economical and easy to operate. Accordingly, the cost of examinations on such devices is quite low. The information content of the examination on such tomographs is low, since the resolution of the image allows you to distinguish objects with a size of at least 5-7 mm. On low-field tomographs, it is not possible to conduct a qualitative examination of the heart, a functional study of the brain, and dynamic MR angiography. On a low-field tomograph, an examination can be carried out to exclude gross pathology. For example, for the diagnosis of herniated discs or large tumors. Also, low-field tomographs significantly exceed the capabilities of computed tomography in terms of the information content of the study of the brain.
Mid-field tomographs: 0.5-1 Tesla. Such tomographs are also found in medical institutions, but they have not received much distribution, since their cost does not differ much from the cost of high-field tomographs, and the information content of the examination is not much better than that of low-field models.
High-field tomographs: 1-1.5 Tesla. High-field MRI is the "Gold Standard" of diagnostics in the world. To date, the examination on such devices has the best price / quality ratio. The resolution of high-field MRI makes it possible to distinguish objects 1–2 mm in size in images.
Ultrahigh-field tomographs: 3 Tesla. Such devices make it possible to examine such complex anatomical formations as the brain, to perform spectroscopy, tractography, and MR angiography of cerebral vessels. In fact, one study makes it possible to obtain comprehensive information not only about the structure, but also the functioning of any organ or tissue of the human body.

The duration of the examination of one part of the body

The higher the power of the tomograph (magnetic field strength), the faster the scan takes place. For example, high-field MRI machines with Tim-technology allow you to scan the entire body in one pass.

Types of MRI machines

Developed and used tomographs of open and closed types. A closed tomograph is a tube or capsule in which the patient is placed as a whole. Problems with examining in a closed CT scanner can occur in patients with claustrophobia and children who are afraid to be alone in a confined space.

Open-type devices are a table above which the main working part of the device is located. When the patient lies on the table, there is an open space to the right and left of him. The disadvantage of open circuit tomographs is the weak magnetic field strength. Usually it is about .5 or 1 Tesla. Accordingly, such a device is not suitable for searching for small neoplasms or diagnosing minor dysfunctions of a particular organ.

In a number of Russian clinics, tomographs have been installed to examine the patient's limbs, in which only a person's arm or leg is placed, and the patient himself sits next to the apparatus.

Maximum table load

Depending on the design features of the apparatus, the examination can be performed on patients with varying degrees of obesity. There are devices for which the maximum allowable weight of the patient is 120 kg, there are those in which you can examine a person weighing 200 kg.

The service life of the tomograph and its manufacturer

Now Russian-made tomographs have appeared on the medical equipment market, however, according to practitioners, the best MRI devices are produced by companies such as Philips and Siemens.

According to the power of the magnetic field, there are 3 main types of MRI machines - low-, medium- and high-field. When prescribing magnetic resonance imaging, doctors compare image quality, diagnostic goals, and the cost of the examination. The strength of the magnetic field is measured in units called "Tesla".

What are MRI machines?

The resolution of tomograms is higher, the stronger the magnetic field. Power is the defining diagnostic factor that affects the resolution, the final image quality.

Low-floor equipment has the lowest price. The intensity of such devices does not exceed 0.5 Tesla, which does not allow obtaining high-quality cuts.

Low-tension tomographs are used when doctors do not set the task of obtaining high-precision tomograms. They are used for primary examination of the brain, parenchymal organs, when small economic costs are required.

Not every medical clinic has the ability to pay gigantic electricity bills, spend large amounts of money on maintenance and repairs. In such a situation, a low-field tomograph is the best option for a preliminary examination of the patient.

Mid-field models (with a strength of 0.5-1 Tesla) are limited in resolution (do not clearly show the structure of small foci), but clearly outline the contours of shadows larger than 0.5 mm in diameter.

High-field installations with a power of 1-3 Tesla are the gold standard of modern radiation diagnostics. Visualize foci with a diameter of more than 1 mm. If a 3 Tesla tomograph works in an institution, most of the nosological forms of soft tissues can be detected with high reliability.

What is the difference between an open MRI and a closed MRI?

According to the types of MRI scanners are divided into closed and open. The first variety has the form of a tunnel in which the patient is located on the diagnostic table. Along the contour is a case with a powerful magnet. The devices have a limit on the permissible weight. On average, in most medical centers in Russia, devices with a maximum weight of up to 130 kg are installed. To prevent the units from working at maximum capacity, radiologists at each clinic impose different limits on the weight of patients.

The open design has top and bottom magnets. The open space allows for attendants to be nearby. Scanning on such devices is recommended for people with a fear of enclosed spaces. (about constructions, sort of like in the next section) Limited tension does not allow studying small details due to low resolution. Scanning on devices helps to identify the tumor, but additional examinations will be required to study the shape, structure, and size. Due to insufficient information content, examinations are not carried out on low- and medium-field tomographs when studying vessels, small anatomical structures. However, modern open-type devices with a power of 1.5 Tesla have been developed, which make it possible to scan through 1 mm.

The current trend in MRI studies is scanning on high-field installations, which allows you not to overpay money when pathological signals are detected on low-field tomograms (“the miser pays twice”).

The scan time depends on the power. Describing the differences between 1.5 and 3 Tesla MRI images, one must take into account the capabilities of the latter type of equipment to detect metastases, use many additional modes (included in the set of software applications supplied with the equipment). High-field tomographs make it possible to obtain sections every 0.8 mm, therefore they are used in oncology to detect a cancerous neoplasm at an early stage, to detect metastases.

Patients consider the power of 1.5 Tesla to be optimal for obtaining high-quality results, at least how much Tesla should be to achieve specific diagnostic tasks - you need to ask a radiologist.

The strength of the magnetic field determines the speed of operations. The greater the tension, the faster the scan, the less a person has to lie motionless on the diagnostic table.

What is the best machine to do an MRI?

High-field MRI 3 tesla, where to do it in Moscow and St. Petersburg, is not an entirely relevant question, since there are more than 70 devices in the cities. Among them are high-, medium-, low-floor, closed and open views. Some clinics offer scanning for children after anesthesia or drug sedation.

It is not a problem to search in St. Petersburg and Moscow open-type MRI, where you can do a study of the brain, parenchymal organs for people with a lot of weight, fear of enclosed spaces.

High-field tomographs show small pathological foci that are not visualized by low-field counterparts. High resolution settings are better for oncological search. If you need to study the behavior of a large focus during treatment, 1.5 Tesla is enough.

If you need to choose an MRI machine, we offer comparative characteristics of equipment of different magnetic intensity:

Tomographs with a power of 3 Tesla visualize nervous, cartilaginous and even bone tissue. Additional filters with high gradients are applied to improve image quality. Section thickness - from 0.5 mm;
The 1.5 Tesla settings allow you to make cuts from 1 mm, which does not allow you to detect smaller objects. Average scan time is about 30 minutes
Low-field installations have low resolution. They are not used in cancer search due to low specificity. The advantage of the installation is low cost. It is used for preliminary diagnostics, scanning of the whole body.

It is easier to explain the possibilities of different types of magnetic resonance imaging using the example of a camera. The better the color reproduction, the better the image. The loss of color reproduction when photographing leads to a decrease in emotional tone. Poor-quality images of the MRI machine do not show small pathological foci, which does not allow early detection of the tumor. Diagnostic errors in medicine are dangerous with negative consequences for the patient.

If a new MRI machine is installed in the clinic, this does not mean that it is the best. Before choosing equipment, you need to find out the power that affects the accuracy of diagnostics.

The higher the magnetic field induction, the clearer the quality of the tomograms. Strong magnets consume a lot of electricity, so the cost of scanning on such installations is higher.

What does an MRI machine look like?

The equipment for carrying out magnetic resonance imaging on the location of the patient resembles classical radiographic installations, consisting of a table and a tube. The difference is the location of the magnet around the circumference of the diagnostic table (closed systems).

Open MRI has a similar design. The difference is the location of the magnet on top and bottom. There is free space on the sides where a guardian or nurse can be. The open capsule does not cause discomfort to people with claustrophobia.

Scanning in an open way can be performed on a person with a large weight with restrictions on tomography on closed equipment (up to 120-130 kg).

MRI machines differ not only in power, scanning speed, image quality. During the procedure, the sound of the device is quite strong and unpleasant. To eliminate the drawback, new devices are supplied with headphones that are put on the person being examined. All high-floor installations are equipped with this “gadget”.

Why is the MRI machine noisy?

Vibrations from a strong magnetic field;
Fan blowing for cooling;
Acoustic system for communication with the doctor.

Each described component generates its own sound, which affects the overall noise level of the treatment room.

Too powerful magnet "knocks". It needs big fans to keep it cool. Low-field scanners create less noise.

The principle of operation of MRI on the example of ultrahigh-field tomographs

Under the influence of a strong magnetic field, vibrations of hydrogen protons occur. The emitted signal is registered by special sensors and processed by a computer. The more water the tissue contains, the stronger the MR signal.

The resolution depends on the strength of the magnetic field. If you ask the doctor to show the device before the start of the tomography, you can assess the quality of the diagnosis by its appearance. Three Tesla units have a large magnet around the periphery of the examination table.

Ultra-high-field installations are used for scientific purposes. The classical power of this type of MRI machine is 5-7 Tesla. Similar magnets in single copies are used in European countries. The high information content of the installations is used to study the functions and the finest structure of the brain tissue. Neurophysicists and neurophysiologists use ultrahigh-field devices to examine the somatosensory cortex.

There is a significant difference in the quality of tomograms between high-field and ultra-high-field tomographs. The latest models are not used in medicine due to the high economic costs of scanning, repair, and maintenance. To solve diagnostic problems, three-tesla magnets are sufficient to help obtain cuts through 0.8 mm.

Ultra-high-field MRI scanners detect small soft tissue changes more accurately than other analogues. The capabilities of the equipment are limited by a cutting step of 0.3-0.5 mm.

Innovative developments are of interest not only for the quality of scanning, but also for the possibility of research in a vertical position. Seated MRI is also possible, but such machines are very rare.

In conclusion, we describe the main advantages of the equipment:

Examination of vessels without contrasting on special modes included in the device;
The study of the functionality of the organ, structure (myocardium and white matter of the brain);
Availability of open and closed options;
Possibility to choose devices with different weight restrictions.

In terms of "price-quality" ratio, the best option is tomographs with a capacity of 1-1.5 Tesla.

Get a referral from your healthcare provider before visiting an MR imaging center. The document is necessary to determine the method, tactics of scanning. Competent solution of the clinical problem is a high probability of effective treatment.