What is an MRI Scan?

An MRI scan (Magnetic Resonance Imaging) is a medical imaging technique that uses strong magnetic fields and radio waves to create detailed images of the organs and tissues inside your body. Unlike X-rays or CT scans, MRI does not use ionizing radiation, making it a safer option for many patients.

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Magnetic Resonance Imaging

  • How It Works:

    1. Magnetism – A powerful magnet aligns the hydrogen atoms in your body.
    2. Radio Waves – These waves disrupt the alignment of the atoms.
    3. Signal Detection – When the radio waves are turned off, the atoms return to their normal state, releasing signals that are picked up by the MRI scanner.
    4. Image Creation – A computer processes these signals to generate detailed images of body structures.

  • Uses of MRI:

    ✅ Brain & Spinal Cord – Detects strokes, tumors, multiple sclerosis, or spinal injuries.
    ✅ Joints & Muscles – Helps diagnose ligament tears, arthritis, and other musculoskeletal conditions.
    ✅ Heart & Blood Vessels – Assesses heart function, detects aneurysms, and examines blood flow.
    ✅ Organs – Examines the liver, kidneys, pancreas, and other internal organs for diseases or abnormalities.

  • Types of MRI Scans:

    🔹 Functional MRI (fMRI) – Measures brain activity.
    🔹 Contrast MRI – Uses a special dye (gadolinium) for enhanced imaging.
    🔹 Magnetic Resonance Angiography (MRA) – Focuses on blood vessels.

    • You’ll lie inside a large tube-like machine.
    • It can be noisy, so you may be given earplugs or headphones.
    • The scan can take 30-90 minutes depending on the area being examined.
    • You must stay still to get clear images.
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How to Prepare for your MRI Scan

An MRI scan (Magnetic Resonance Imaging) is a medical imaging technique that uses strong magnetic fields and radio waves to create detailed images of the organs and tissues inside your body. Unlike X-rays or CT scans, MRI does not use ionizing radiation, making it a safer option for many patients.

Learn MRI Scan Prep

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Treatment Options after MRI

The treatment you receive after an MRI scan depends on what the scan reveals. After reviewing your results with your doctor they may recommend some of the following

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frequently asked questions

MRI Scan FAQs

What is an MRI scan used for?

MRI scans help diagnose conditions related to the brain, spine, joints, organs, and blood vessels. They are commonly used to detect tumors, injuries, infections, and neurological disorders like multiple sclerosis or stroke.

Is an MRI scan painful?

No, an MRI scan is painless. However, you may feel discomfort from lying still for an extended period or from contrast dye injection (if required).

How long does an MRI scan take?

MRI scans typically last 30–90 minutes, depending on the body part being examined and whether contrast dye is used.

Can I eat or drink before an MRI?

Regular MRI: No fasting required.

MRI with contrast dye: You may need to avoid food/drinks for 4–6 hours before the scan.

Can I have an MRI if I have metal implants?

It depends on the type of metal. Some implants (like pacemakers, cochlear implants, or metal fragments) may interfere with the MRI machine. Always inform your doctor about any implants before the scan.

Is an MRI safe during pregnancy?

MRI scans are generally safe during pregnancy, but they are usually avoided in the first trimester unless absolutely necessary. If contrast dye is needed, your doctor will assess the risks.

What if I'm claustrophobic?

Ask about an open MRI (available at some facilities).

You may be given a mild sedative to help you relax.

Listening to music or using an eye mask can also help.

How do I get my MRI results?

A radiologist analyzes the scan and sends a report to your doctor.

Results are usually available within a few hours to a few days.

Your doctor will discuss the findings and next steps with you.

Can I drive after an MRI?

Yes, unless you were given sedation. If sedated, arrange for someone to drive you home.

What should I do if I feel unwell after an MRI?

If you experience allergic reactions (rash, difficulty breathing) after contrast dye, seek medical help immediately.

Mild side effects like headache or nausea usually resolve on their own.

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