Things you need to know about a brain MRI test!

Has your doctor told you to have a `(Brain MRI)` of your head? When you hear that, you may be a little scared and curious, right? "What is an MRI? What does it look at? Will it hurt? How long will it take?" Many questions like that must be coming to your mind. So today, we will talk about this `Brain MRI` simply, in a way that you can understand. After reading this, you will have a better understanding of MRI, and you will no longer have any unnecessary fear.

What is Brain MRI?

Simply put, a `Brain MRI` is a painless test that takes very clear, detailed pictures of the inside of your head, especially the brain and its associated parts. This is called `Magnetic Resonance Imaging`, and `MRI` is an abbreviation for `Magnetic Resonance Imaging`.

Imagine, this is like taking a picture of the inside of your head with a super camera. But this uses a special technology that combines a large magnet, radio waves, and a computer. The most important thing is that it does not use radiation like X-rays. Therefore, there is no need to worry about unnecessary radiation entering the body.

Compared to other existing testing methods, such as a CT scan or an X-ray, MRI is the most sensitive and clearest way to see inside the head, especially the brain.

Why is an MRI sometimes done with 'contrast'?

Yes, in some brain MRI tests, doctors inject a special liquid called contrast material into the body. This often uses a substance containing a rare metal called gadolinium .

When this `contrast` is injected into the body, it changes the magnetic properties of the water molecules around it. What happens then? The `MRI` images become clearer, especially certain parts are highlighted better. This makes it possible to make a diagnosis more accurately and easily.

When you use `Contrast`, you can see things like this very clearly:

• Various tumors in the brain.
• Swelling and inflammation.
• The way blood is supplied to certain organs.
• The condition of the blood vessels.

Not only that, this contrast also helps to identify conditions such as multiple sclerosis, stroke, dementia, and various infections.

If you need to have a contrast material for your MRI, the medical staff will insert a small tube, called an IV line, into a vein in your arm or hand. This is where the material is given into your body. These contrast materials are generally safe drugs. Minor side effects can sometimes occur, but serious reactions are rare.

Are head MRI and brain MRI the same thing?

No, actually, a head MRI and a brain MRI are two names for the same test. Both of these take pictures of the delicate structures inside your head. Doctors often focus on the brain with this test. But in addition to the brain, many other things inside the head, such as facial bones, blood vessels, and nerves, can be clearly seen in these images.

What exactly can be checked with a brain MRI?

A `Brain MRI` can get a clear picture of many things inside your head, including:

• Your brain and its different parts.
• Blood vessels that connect to the brain.
• Your skull and facial bones .
• The delicate structures of the inner ear .
• The eyes and their supporting tissues, for example the optic nerves.
• Other large nerves (the ones in the head are called `cranial nerves`).
• The soft tissues , fat, muscle, and connective tissue surrounding the skull.

What does an MRI show in the brain?

More specifically, a `Brain MRI` can check for any abnormalities in your brain or surrounding tissues. Here are a few examples:

• Inflammation and swelling.
• Some structural issues in the brain.
• Abnormal growths or masses.
• Brain fluid leaks.
• Bleeding in the brain (hemorrhage).
• White matter disease.

What symptoms would prompt an MRI?

Neurologists and other doctors recommend a brain MRI for a variety of reasons. The most important of these is to diagnose a new neurological condition based on your symptoms, or to monitor an existing condition.

Here are some of the conditions that can be diagnosed or monitored with a Brain MRI:

• A blood clot in the brain.
• Brain aneurysm (a bulging blood vessel).
• A brain hemorrhage.
• Brain infections, for example encephalitis.
• Brain damage caused by epilepsy.
• Brain tumors and cysts.
• Some chronic neurological diseases, for example, multiple sclerosis (MS).
• Dementia is a disease of memory loss.
• Hydrocephalus (accumulation of water on the brain).
• Pituitary gland problems, for example, pituitary adenoma.
• Stroke.
• Problems with brain development or structure, for example, Chiari malformation and malformations of cortical development.
• Traumatic Brain Injury (TBI) is an injury to the brain caused by head injuries.

Also, your doctor may recommend an MRI if you have one or more of these symptoms:

• Frequent migraines and/or chronic headaches.
• Having a fit (seizures)
• Vertigo and frequent, severe dizziness.
• Hearing loss for no apparent reason.
• Vision impairments that cannot be detected by an eye exam.
• Hormonal imbalances related to the hypothalamus and/or pituitary gland.
• Significant changes in thinking and behavior.
• Severe body weakness and fatigue.

In addition, doctors use MRI scans before and after head surgeries to help prepare for the surgery and to monitor recovery after surgery. They also use MRI scans to check for injuries, bleeding, and swelling in the event of a major head injury.

Who performs a Brain MRI?

Your `Brain MRI` (also known as `Head MRI`) will be done by a `radiologist` or `radiology technologist` . A radiologist is a doctor who takes and analyzes these types of images to diagnose disease. A radiology technologist is a healthcare professional who is specially trained and certified to perform an `MRI` scan.

How does this MRI machine work?

The way a `Magnetic Resonance Imaging (MRI)` machine works is a bit complicated, but in simple terms it goes like this:

This machine sends an electric current through coils of wire, creating a temporary magnetic field inside your body, in this case inside your head. Then, a special part of the machine (called a transmitter/receiver) sends radio waves into and out of your body. The hydrogen atoms in your body respond to this magnetic field and the radio waves.

The computer analyzes these signals and creates very clear digital images of the structures inside your head, especially the brain. It is through these images that doctors can see exactly what is happening inside your head.

How should we prepare for an MRI scan?

Instructions for eating and drinking before a brain MRI may vary depending on the reason for your MRI. In most cases, you can eat normally and take your medications unless your doctor tells you otherwise.

However, this is very important: The MRI machine uses very strong magnets and radio waves. Therefore, if you have some metal objects in your head or body, they may heat up, move, or interfere with the operation of some electronic medical devices installed in your body. This can cause problems for your health and safety.

Therefore, if you have any metal objects or implanted medical devices in your body, you should definitely inform your doctor and MRI technologist about it before the MRI.

Some implants may require special planning and instructions. Others may not require special instructions, but an X-ray may be done before the MRI to see exactly where they are.

You need to inform the doctor about these things before the MRI!

If you have one or more of the following, be sure to mention it:

• Cardiac pacemaker
• Middle ear prostheses
• Cochlear implant (a hearing device)
• A clip used for brain aneurysms
• Vagal nerve stimulator
• Metal fragments stuck in the head or eye.

In addition, inform your doctor about these things:

• If you are pregnant (MRI is usually not performed during the first three months of pregnancy, unless absolutely necessary).
• If it is difficult to lie on your back for 30 to 60 minutes at a time.
• If you have claustrophobia (that is, the fear of confined, narrow spaces).

What are the things you should not bring into the MRI room?

When going for an MRI , leave all your jewelry and other metal devices at home, or remove them before the MRI. Metal and electronic items are not allowed in the examination room. They can interfere with the magnetic field of the MRI machine, heat up and cause burns, or move quickly and cause accidents.

Do not bring things like this:

• Jewelry, watches, credit cards, hearing aids (these can be damaged).
• Hairpins, metal hairpins, underwired brassieres, metal zippers (these can distort MRI images).
• Removable dentures.
• Pens, pocket knives, glasses.
• Body piercings.
• Mobile phones, electronic watches, tracking devices.

What happens during an MRI scan? How will you feel?

Most brain MRIs are painless. However, some people may find it difficult to remain still for 30 minutes or more. Others may feel a little nervous or anxious about being in the confined space of the MRI machine. Also, the machine makes some noise.

Here's what typically happens during a `Brain MRI` scan and how you might feel:

• First, you will be given a hospital gown suitable for the MRI scan.
• You will then be placed face up (in most tests) on a bed in the MRI machine.
• After you lie down on a bed, the technologist will slowly place a special helmet-like device (called a `head coil`) around your head. Some `head coils` have a mirror or a small screen attached to them. This allows you to see the light from the scanner or watch TV. This can help reduce claustrophobia, which is the feeling of being in a confined space.
• Then the technologist will slowly push you and the bed into the MRI machine.
• When the MRI scan begins, you will hear a lot of clicking and popping sounds as the machine takes the images. You may hear these sounds for several minutes at a time. Don't worry, this is normal. Before the test begins, you will be given earplugs or headphones to protect your ears from the noise. Sometimes you can listen to music through the headphones.
• The most important thing is to remain as still as possible during the test. This will allow you to get the clearest, best quality images.
• It is normal for the area around your head to feel a little warm while the images are being taken. If this is uncomfortable for you, tell the radiologist or technologist.
• The MRI technician will be able to watch you and talk to you at all times. There is a two-way intercom system while you are inside the scanner. You will also have a call button on your hand. If you have any questions or concerns, you can let the technician know.

Sometimes, as mentioned earlier, you may need to have a contrast dye for your MRI. If this happens, you will be given an IV (intravenous) dye before the MRI. You will feel some pain when the IV is inserted, but it will not be severe. You may feel some bruising afterwards. Some people may also experience a slight metallic taste in their mouth when the contrast dye is injected. This will go away after a while.

What do you do for people who have a little fear (claustrophobia)?

If you have claustrophobia, or a fear of confined spaces, tell your doctor in advance. Your doctor may prescribe a sedative or possibly anesthesia to help you relax during the test.

When doing a brain MRI, does the whole body go into the machine?

Most of the time, if you're just doing a head MRI or brain MRI, your entire body doesn't go into the tunnel of the MRI machine. It's usually just the head and shoulder area that goes into the machine.

How long does it take to do a brain MRI?

A brain MRI usually takes about 30 minutes to an hour . If you have an MRI with contrast, it may take a little longer.

Your doctor will be able to tell you exactly how long it will take, depending on the reason for your scan.

How long does it take to know the results of the MRI test?

After your MRI scan is done, a radiologist will carefully analyze the images. He or she will then send a signed report to your primary healthcare provider. The doctor will then tell you the results. The doctor will usually receive the report within a day or two.

You may need to have another test (follow-up exam). If so, your doctor will explain the reason for this.

Finally, the most important thing to remember (Take-Home Message)

Magnetic resonance imaging of the brain, or `Brain MRI`, is a very useful and generally very safe test. Doctors use it for a variety of reasons. If you are scheduled to have a `Brain MRI` scan and have any concerns, worries, or questions about it, don't hesitate to ask your doctor. They are always ready to answer your questions and support you.

Remember, this test is done to gain a clear understanding of your health condition and help you get the best treatment you need. So don't cause unnecessary fear.

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