Everything you need to know about MRI
How MRI scans work
The MRI machine is shaped like a large tube which is open at both ends. A magnetic field and radio-frequency pulses are used to create the image which means there is no radiation at all. The magnetic field is very strong so therefore no metal can be taken into the room. You must disclose any metallic implants when you make your booking.
What you can expect
MRI scans are loud due to switching electronic currents directed through coiled electromagnets. Ear plugs or headphones are used during the scan, allowing you to listen to music. You’ll also be given a buzzer to speak with the radiographer if necessary.
The day of the scan
Prior to scan Gown and cannula if required
Finalise appointment with reception
Request a MRI appointment
No, an MRI will not cause fillings in your teeth (if in proper condition) to dislodge or come out. The metal in most fillings is not affected by the MR system’s magnetic field. However, fillings and orthodontic braces may cause some distortion of the images if you are having a scan of your neck, brain or facial area.
Yes. MRI scans are often preferred for children as there is no radiation used. It is helpful to show your child some videos on Youtube of an MRI machine so they are aware of the loud noise and that they have to lie very still.