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MRI Of The Brain (Magnetic Resonance Imaging)

MRI is a modern study of brain structures by recording an RF signal when a patient is placed in a device with a high magnetic field, which allows doctors to conduct a high-quality diagnosis of brain diseases/ injuries. Unlike other methods of radiation diagnostics, such as computed tomography, radiography, during MRI we get more diagnostic information, the accuracy of which is now the highest among all methods of radiation diagnostics of brain structures. In addition, with an MRI of the brain, the patient is not exposed to ionizing radiation; therefore, this procedure is safer for health than other diagnostic methods.

BASIC INDICATIONS FOR MRI OF THE BRAIN

Diseases of the vascular system of the brain. In most cases, patients are referred for MRI test in east Delhi if the person has suffered a stroke or if there has been a hemorrhage in the brain. In this case, you can accurately see the affected area and understand how severe the hemorrhage was in order to use certain drugs to improve the patient's condition.

Endured various head injuries, especially those accompanied by neurological disorders, such as malfunctioning of the senses.

Oncological processes of the brain (primary tumors, secondary changes - metastases). In this case, MRI allows you to monitor the situation and see how much the tumor has increased or decreased after treatment.

Infectious diseases that occur with damage to the nervous system, such as meningitis, encephalitis, brain abscess, which, if improperly treated or absent, can lead to death.

Congenital anomalies of the substance of the brain for a long time may not produce significant symptoms, but under certain conditions (increased blood pressure, trauma, etc.), cause complications ending in temporary disability or disability.

Epilepsy, a condition accompanied by a malfunction of the cerebral cortex, in this situation it is necessary to see which part of the brain is damaged and what is its general condition.

Where to do an MRI of the brain

MRI- the gold standard for brain research, is the most accurate, safe and informative method of radiation diagnostics, both for assessing the anatomical structure of the brain and for visualizing pathological changes in its structure, and some specific studies can evaluate brain metabolism, but at the same time it requires the availability of modern expensive equipment in a medical institution, as well as highly qualified specialists who can make the correct diagnosis h based on studies.

Brain MRI is a painless procedure, as a result of which, using the influence of a magnetic field, and layered, detailed images of brain structures are obtained. MRI is a safe method of examination, i.e., when scanning, X-ray (ionizing) radiation is not used, and the patient is not "irradiated" during the procedure, as a result of several examinations it is possible to go through at a time. It is good to know the MRI test cost in Noida before undergoing the treatment.

If necessary, MRI of the brain is performed with contrast. A contrast agent is used to study processes in the organ or tissue under study in more detail. When injected into a vein, the blood flow brings a contrast medium to the zone of interest, after which a targeted study of this zone is performed, this allows you to identify and confirm the presence, as well as evaluate the dynamics of oncological and inflammatory processes in the brain.

Why is Magnetic Resonance so Noisy?

In past years, magnetic resonance imaging (MRI diagnostic labs in Delhi) has become one of the most requested tests within a diagnostic imaging service thanks to its great potential to differentiate the different tissues that make up the human body, but why is it so noisy? It is the question that many patients ask themselves at the end of the test.

The Magnetic resonance machine basically consists of a powerful magnet, mostly superconductors, with a transmitter and a radio wave receiver, in addition to all the electronics necessary to coordinate its operation. The magnet creates a powerful magnetic field even more powerful than that of the earth, the transmitter, in turn, emits radio waves that are directed towards the patient, these waves excite the protons of the different tissues and the receiver picks up the signal emitted with which will create the image.

There are four magnets, one main, the largest and most powerful, and the other three smaller ones are the gradients, which are inside a large metal coil called a gradient coil. This coil is composed of copper electromagnets that create a secondary magnetic field in each of the three directions of space and fulfill a fundamental function since they are responsible for spatially locating the RM signal and coding it in order to create the image.

What is so much acoustic noise? To create the magnetic field an electric current has to be applied and when this is applied in the presence of a static magnetic field they produce variable magnetic forces that act on the gradient coil (mechanical vibration) and cause it to expand and contract rapidly in a matter of milliseconds producing movements or vibrations generating noise that is manifested throughout the room, so we can say that the main responsible for the noise generated by the magnetic resonance machine are the gradient coils.

There are other factors that contribute to generate noise such as the modification of acquisition parameters, acoustic noise tends to improve with the reduction of the thickness of cut, the field of vision (FOV), RT (repetition time) and ET (echo time) but this may affect the resulting image.

On the other hand, the acoustic noise characteristics have a spatial dependence depending on the position and the size of the patient; the levels can vary by about 10dB.

Studies conducted including a variety of pulse sequences where several gradients are applied resulted in this type of sequences (3D and GR) being among the strongest with levels ranging from 103-113 dB. Other studies also measured the acoustic noise generated by echo planar (EPI) and FSE (fast spin echo) sequences in 1.5T, noise levels ranging from 114 to 115 dB and in 3T levels in the range of 126 to 131 dB for these noise levels the use of hearing protection is recommended.

When the patient asks about technical issues like this we cannot use a very technical language since the patient would not understand us, we have to find a way to make ourselves understood in order to satisfy their curiosity. A patient informed about the MRI test cost in Noida that is going to be performed tends to collaborate and feel safer.

The 3 Main Trends In Diagnostic Imaging Of 2019

The technology is not modern but its applications could be surprising.

The prospects for diagnostic imaging in 2019 seem very similar to what was discussed in 2018. Artificial intelligence (AI) and wearable devices are again on the list, along with even more apps for mobile imaging devices. This ranking of the 3 main trends in diagnostic imaging is no surprise. However, in 2019, it will be interesting to observe a better understanding and more applications of these already existing technologies.

Trend 1. Artificial intelligence deserves a closer look

The interest and development of applications on the subject of artificial intelligence will remain high. Although artificial intelligence is explored as an additional eye on image analysis, it will not replace the human factor. MRI scan centers in east Delhi do much more as compared to the most advanced algorithm can do because they don't focus exclusively on images. Their purpose includes communication, image quality assessment, image optimization, training, procedures, policy definition, and more. Becoming an expert in all these essential skills would require a level of "general artificial intelligence" of at least 20 years- if not perhaps more.

Trend 2. Wearable diagnostics

Wearable medical devices will do more in imaging than during 2019. Although many medical devices have limitations and some are controversial, the list of their applications- from measuring ECGs to alerting people overexposed to UV rays- is exploding. One of the most recent inventions for diagnostic imaging is the MEG wearable brain scanner.

The lightweight MEG is "worn as a helmet and can measure brain activity while people make natural movements like nodding, stretching, drinking tea and even playing ping-pong." The wearable scanner offers better imaging possibilities to patients with disorders that cause body movements.

Another wearable device is an MRI glove. Worn close to the skin, it can provide clear and consistent images of moving joints and tendons.

The advantages of the images produced by the MRI glove include the provision of a clear map of the anatomy of the hand, which helps in multiple aspects, from surgery to the most accurate prosthesis design.

Trend 3. Mobile applications for brain and body

Although there are many health apps for mobile devices, there are not many applications approved by the Food and Drug Administration (FDA) for diagnostic imaging. However, mobile technology will continue to affect the medical profession in diagnostic imaging.

Together, these developments allow radiologists to report, collaborate, and consult doctors in other specialties with the same certainty that they would have following an assessment at their reporting workstations.

Concluding

There will be technological advances that will help improve the diagnoses and speed with which they can be processed. Finally, greater flexibility through mobile access for radiologists will help doctors, nurses, and other professionals involved in the care continuum to be better informed and closer to the patient.

High-Precision MRI Finds Physical Source of Depression

Functional magnetic resonance imaging (fMRI) of the brain can help predict the response to antidepressant treatment.

Predicting the effectiveness of antidepressant treatment would be possible through functional magnetic resonance imaging (fMRI) observation of the brain, according to the results of a study published in the medical journal Brain. MRI tests in east Delhi provides a precise response to the 90% treatment response.

MRI FOR EARLY DIAGNOSIS

During the study, the researchers observed that brain activity in the event of errors on a cognitive task is related to the response to MRI treatment. In fact, patients who display the most activity in two brain networks in the event of an error while performing a cognitive task are less likely to respond to antidepressant treatments.

Depression: magnetic resonance imaging to verify the effectiveness of treatment

Brain imaging techniques work. However, it is impossible to think of using them always to verify the effect of psychotherapy.

In recent weeks, a well-recognized journal has published an interesting study which shows that it is possible to evaluate the goodness of psychotherapy through magnetic resonance imaging. A research that, according to the authors, will lead in the future to use brain imaging to identify the best treatment of depression in every single patient is far from being a reality.

Depression: the triggers

Today we know that depression arises from a combination of biological factors - such as genetics - and psychological and environmental factors. These include stress, social problems, difficulties in interpersonal relationships, a tendency to overestimate the negative aspects and minimize the positive ones, etc. For a person with a high biological predisposition, minimal adverse external events are enough to generate a depressive episode.

Photographing alterations

The combination of these triggering factors leads to the development of depression: change in mood, alterations in sleep, reduction in interests, alterations in appetite, and reduction of energy are just some of the symptoms. Beyond the triggering cause is the brain. In depression, real structural and physiological changes occur. Modifications that can be "photographed" thanks to imaging techniques such as functional magnetic resonance. Alterations that, with an integrated approach between psychotherapy and the use of drugs, can improve - as well as the symptoms of the depressed person until they disappear entirely.

A little sustainable hypothesis

The study in question has exploited this knowledge by photographing the changes of a depressed brain that gradually returns to normal functioning when psychotherapy begins to function. However, we see difficult applications in clinical practice. At the moment, it would not be feasible to make a functional MRI to see if a patient responds to psychotherapy or a drug. It is, in fact, much simpler - and less expensive - to evaluate the answer with more traditional methods, which is talking with the patients and observing the change in their thoughts and feelings. MRI test labs are waiting for some hi-tech company to find a way to make a smartphone capable of performing an MRI.

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