What is an MRI – and how is it done?
In this article, we will describe what is an MRI, and how it is done.
An MRI (Magnetic Resonance Imaging) scan is a painless and non-invasive medical imaging procedure that uses strong magnetic fields and radio waves to produce detailed images of the internal structures of the body. Here’s a step-by-step guide on how an MRI is done:
Preparation
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Removal of metal objects: You’ll be asked to remove any metal objects, such as jewellery, glasses, or clothing with metal fasteners
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Change into a gown: You’ll be given a hospital gown to wear to prevent any metal objects from interfering with the scan
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Inform about metal implants: If you have any metal implants, such as a pacemaker or artificial joint, you’ll need to inform the MRI staff.
MRI Procedure
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Lie down on the table: You’ll lie down on a motorised table that slides into the MRI machine
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Head or body coil: A coil will be placed around the area of your body being scanned. This coil helps to receive the radio signals
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MRI machine: The table will slide into the MRI machine, which is a large, cylindrical tube
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Magnetic field and radio waves: The MRI machine will create a strong magnetic field and send radio waves through your body
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Images created: The signals will be used to create detailed images of your internal structures.
During the scan
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Stay still: You’ll need to remain still during the scan to ensure clear images
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Breathing instructions: You may be asked to hold your breath or follow specific breathing instructions
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Noise: The MRI machine can be loud (with a repetitive thumping sound), so you may be given earplugs or headphones to wear.
- Time: It can take 30-45 minutes.
After the scan
A normal MRI of the lumbosacral spine
Summary
We have described what is an MRI, and how it is done. We hope it has been been helpful.
