How Is an MRI Test Done? Step-by-Step Procedure Explained

If your doctor has recently recommended an MRI scan, it’s completely normal to feel a little anxious or curious about what’s going to happen. The good news is that an MRI is a painless, non-invasive procedure — and once you know exactly what to expect, the whole experience becomes much less intimidating. In this guide, we’ll walk you through how an MRI test is done, from the moment you arrive at the diagnostic centre to the time you walk out with your results.

What Does MRI Actually Mean?

Before we get into the procedure, let’s clear up the basics. MRI stands for Magnetic Resonance Imaging. It’s a medical imaging technique that uses powerful magnetic fields and radio waves to create detailed images of the inside of your body — organs, tissues, bones, and more. Unlike X-rays or CT scans, MRI does not use radiation, which makes it a safer option for many patients, including pregnant women (in certain situations) and children.

Doctors use MRI scans to diagnose a wide range of conditions, from brain disorders and spinal problems to joint injuries and tumors.

Before the Scan: Preparation You Should Know About

A successful MRI begins well before you lie down in the machine. Preparation matters, and your diagnostic centre will usually guide you through it — but here’s what typically happens:

Filling Out a Safety Questionnaire When you arrive, you’ll be asked to complete a detailed safety form. This covers questions about metal implants (like pacemakers, cochlear implants, or surgical clips), previous surgeries, allergies, and any existing medical conditions. This step is non-negotiable — metal objects inside the body can be dangerous in a magnetic field, so the medical staff needs to know everything beforehand.

Changing Into a Gown You’ll be asked to remove all metal-containing items — jewellery, hairpins, watches, belts, hearing aids, and even some types of underwire bras. You’ll likely change into a hospital gown. This is to ensure nothing interferes with the magnetic field during the scan.

IV Line for Contrast (If Required) Some MRI scans require a contrast dye, usually gadolinium, which is injected through an IV line into your arm. This contrast agent helps highlight specific areas of the body — such as blood vessels, inflammation, or tumors — making the images much clearer. Not every scan needs contrast, and your doctor will have already decided this before your appointment.

Discussing Any Concerns With the Technologist Before the scan begins, the MRI technologist — the trained professional who operates the machine — will explain the procedure to you. This is a great time to mention if you suffer from claustrophobia, have anxiety, or have any questions. In some cases, a mild sedative can be arranged in advance if needed.

Inside the MRI Room: What You’ll See

The MRI room looks clinical and slightly futuristic. At the centre of it sits the MRI machine itself — a large, tube-shaped scanner with a narrow table that slides in and out. The room is often cool in temperature, and you may notice the absence of any windows due to the magnetic shielding required.

You’ll also be given earplugs or headphones before the scan begins. This is important — MRI machines are genuinely loud. They produce repetitive knocking, thumping, and buzzing sounds throughout the scan. Some centres play music through the headphones to help patients relax, which is a small but meaningful comfort.

Step-by-Step: How the MRI Scan Actually Happens

Step 1 — Positioning on the Table

You’ll lie flat on the MRI table, typically on your back. The technologist will position you carefully depending on the body part being scanned. For a brain MRI, a special frame called a coil may be placed around your head. For a knee or shoulder MRI, a coil will be positioned around the relevant joint. These coils help receive the radio wave signals and produce sharper images — think of them as signal antennas.

Pillows and straps may be used to help you stay still and comfortable. Staying still during the scan is important because even small movements can blur the images.

Step 2 — Sliding Into the Scanner

Once you’re positioned correctly, the table will slowly slide into the opening of the MRI machine. How far you go in depends on what part of the body is being scanned. For a brain scan, your entire upper body may go inside. For a knee scan, only your leg may enter the machine.

If you feel uncomfortable at any point, you’ll have a call button or squeeze ball in your hand that you can press to alert the technologist immediately. They’re watching you through a window and can hear you through an intercom at all times.

Step 3 — The Scan Begins

Once you’re in position, the actual scanning begins. The machine creates a strong magnetic field around you, and radio waves are directed at the body part being examined. Your body’s hydrogen atoms respond to these waves, and the signals they send back are picked up by the coils and converted into detailed images by a computer.

You won’t feel the magnetic field. You won’t feel the radio waves. What you will feel is the table occasionally vibrating slightly, and what you will certainly hear is the loud, rhythmic noise of the machine working. This is completely normal.

Step 4 — Staying Still and Breathing Normally

During the scan, the technologist will sometimes ask you to hold your breath for a few seconds — especially during abdominal or chest scans. This prevents breathing movement from blurring the images. At other times, you simply breathe normally and try to remain as still as possible.

The technologist communicates with you through the intercom periodically, letting you know how much time is left or asking how you’re feeling.

Step 5 — Contrast Injection (If Applicable)

If your scan requires contrast dye, the technologist will pause the scan midway to administer the injection through the IV line already in place. You might feel a brief cool sensation or slight warmth as the dye enters your bloodstream — this is normal. The scan then continues.

Some patients worry about reactions to contrast dye. Serious allergic reactions are rare, but the medical team is always prepared to respond if needed. You’ll be monitored after the injection.

Step 6 — The Scan Is Complete

When all the required images have been taken, the table slides back out. The technologist will come in to remove the coils, disconnect any IV lines, and help you off the table if needed.

That’s it — the scan itself is over.

How Long Does an MRI Take?

The duration varies depending on the body part being scanned and how many images are needed. A simple MRI (like a knee or shoulder) may take 20 to 30 minutes. A more complex scan — such as a full spine, brain with contrast, or abdominal MRI — can take 45 minutes to over an hour.

It can feel long, especially if you’re lying still in a noisy machine. But most patients find it manageable once they know what to expect.

After the Scan: What Happens Next?

Once the procedure is done, you can get dressed and go about your day. There’s no recovery time needed — unless you were given a sedative, in which case you’ll need someone to drive you home.

The images captured during your MRI are then reviewed and analysed by a radiologist, a specialist doctor trained to interpret medical imaging. They’ll prepare a detailed radiology report, which is sent back to your referring doctor.

At Al-Noor Diagnostic Centre, we ensure that MRI reports are prepared with precision and shared promptly so your doctor can make informed decisions about your care without unnecessary delays.

A Few Tips to Make Your MRI Experience Smoother

• Arrive early — give yourself time for paperwork and preparation without feeling rushed
• Wear comfortable, metal-free clothing — it reduces the time spent changing
• Communicate openly — if you have claustrophobia or anxiety, let the team know in advance
• Bring your referral and past reports — helps the radiologist give a more accurate reading
• Ask questions — no question is too small when it comes to your health

Why Choose Al-Noor Diagnostic Centre for Your MRI?

At Al-Noor Diagnostic Centre, patient comfort and diagnostic accuracy are at the heart of everything we do. Our MRI facility is equipped with advanced imaging technology, operated by experienced technologists, and supported by qualified radiologists who deliver precise, timely reports. We understand that visiting a diagnostic centre can be stressful, and we’re committed to making every step of the process as smooth and reassuring as possible.

Whether you’ve been referred for a brain scan, a musculoskeletal assessment, or an abdominal investigation, you can trust that you’re in capable, caring hands.

Final Thoughts

Understanding how an MRI test is done can take away a lot of the fear that surrounds it. It’s a safe, painless, and remarkably detailed diagnostic tool that helps doctors see what other tests simply cannot. From preparation to the final image, the process is designed with your safety and comfort in mind.

If you have an upcoming MRI or want to book one, reach out to Al-Noor Diagnostic Centre. Our team is always ready to guide you — before, during, and after your scan.