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Description of Magnetic Resonance Imaging (MRI)

MRI creates cross‑sectional and three‑dimensional images of your body using magnetic fields and radio‑frequency signals. Unlike X‑ray or CT, MRI does not use ionising radiation, making it suitable for repeated imaging and long‑term monitoring.

MRI is commonly used to evaluate:

  • Brain and neurological symptoms
  • Spine and nerve conditions
  • Musculoskeletal injuries (tendons, ligaments, cartilage, joints)
  • Abdominal and pelvic organs (liver, kidneys, bowel, uterus, prostate)
  • The heart and blood vessels
  • Tumours, infections, inflammation, and complex diseases

MRI provides exceptional clarity of:

  • Soft tissues
  • Muscles, tendons, ligaments, cartilage
  • Nerves and the spinal cord
  • Organs and internal structures
  • Blood vessels (using MRA techniques)

The scan is performed by a qualified MRI technologist and interpreted by an experienced radiologist. Modern MRI systems reduce noise, improve comfort, and provide fast, high‑resolution imaging.

Frequently asked questions about Magnetic Resonance Imaging (MRI)

How do I prepare for a MRI?

General preparation guidelines:

  • Remove all metal (keys, jewellery, credit cards, hairpins, piercings)
  • Avoid makeup and hairspray (may contain metallic particles)
  • Wear loose clothing without metal zips or bring a change of clothes
  • Bring any previous X‑ray, CT, ultrasound, or MRI studies
  • Notify staff if you are pregnant or breastfeeding
  • Some scans require fasting (you will be advised if needed)

If you are claustrophobic, sedation may be provided. Please arrange a support person to drive you home if sedation is used.

Most MRI scans require little preparation, but safety screening is essential due to the strong magnetic field/

You must inform staff if you have:

  • Pacemakers or cardiac implants
  • Cochlear implants
  • Surgical clips or aneurysm clips
  • Neurostimulators
  • Metal fragments in the eye
  • Insulin pumps or drug infusion devices
  • Magnetic dental implants
What happens during the MRI scan?
  • You may be asked to change into a gown.
  • You will lie on a padded table that moves into the MRI scanner.
  • A buzzer will be given to you to alert staff at any time.
  • Earplugs or headphones are provided because MRI is noisy.
  • The scan consists of several sequences, each lasting 30 seconds to a few minutes.
  • It is important to remain still to ensure clear images.
  • Some scans require brief breath‑holding.
What is a contrast injection?

Some MRI exams require an IV contrast agent (gadolinium) to highlight blood vessels, inflammation, or abnormal tissue. Contrast is generally very safe. Inform staff if you have kidney issues or previous contrast reactions.

How long does a MRI scan go for?

Most MRI scans take 15–30 minutes. More specialised studies may take 40–60 minutes. You can usually go home straight after the procedure unless sedation was used.

Risks and Safety

MRI is extremely safe when proper screening is completed. There are no known long‑term side effects.

Risks are mainly related to:

  • Metal implants interacting with the magnet
  • Rare allergic reactions to contrast
  • Claustrophobia

Benefits of MRI

  • No radiation
  • Exceptional soft‑tissue imaging
  • Safe for children and long‑term monitoring
  • Highly accurate diagnostic information
  • Ability to image almost any part of the body in any direction

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Should you have any questions or require any assistance, please don’t hesitate to get in touch. Our team is committed to supporting you and your patients every step of the way.