MRI

What to Expect During an MRI Scan

Understanding the process can help you feel more at ease during your appointment. Here’s what to expect before, during, and after your MRI scan.

Before the Scan

• You may be asked to change into a procedure gown.
• You’ll need to remove all metal objects, including jewellery, glasses, and hearing aids.
• You’ll complete a medical questionnaire to ensure it’s safe for you to undergo the procedure.
• Inform the radiographer if you have any implanted medical devices, such as:

• Cardiac pacemakers
• Internal defibrillators
• Cochlear implants
• Metal fragments or implants

During the Scan

• The scan usually takes 20 to 60 minutes, depending on the type of examination.
• You’ll be positioned on a table that slides into the MRI tunnel, which is open at both ends.
• You will be given a call button to alert the radiographer at any time.
• The radiographer will monitor you from outside the room and speak with you during the scan.
• Earplugs will be provided to block the loud knocking sounds from the scanner.
• You must lie very still during scan intervals to ensure clear images.
• You may be given breathing instructions or asked to hold your breath briefly during certain sequences.
• If contrast is required, a trained nurse or radiologist will insert an IV line to administer the contrast agent. This may be necessary for:
  • Abdominal imaging
  • Spinal inflammation
  • Brain and tumour assessment
• For specific exams like MR Prostate, a rectal catheter or coil may be inserted discreetly by a nurse or radiologist.

After the Scan

• You can resume your normal activities immediately, unless sedation was administered.
• If you had sedation, please ensure someone drives you home.
• Results are usually available within 2 hours, and your referring doctor will discuss the findings with you.

Preparing for Your MRI Scan

Proper preparation ensures accurate results and a smooth experience:

• Referral Required: You’ll need a referral note from a specialist for your MRI scan.
• Authorisation: Medical aid pre-authorisation is typically required. Our practice will obtain this on your behalf. You are responsible for any shortfalls or exclusions.
• Billing: Private patients must settle their accounts on the day of the procedure.
• Contrast Use: If your scan requires contrast, inform the radiographer if you have renal (kidney) issues, as contrast agents may affect kidney function.
• Medical Questionnaire: Complete the MRI safety questionnaire thoroughly and honestly, especially regarding any implanted devices, metal fragments, or previous surgeries.
• If Sedated: Arrange for someone to accompany you or drive you home if you will receive sedation.

Safety Considerations

MRI is a safe and non-invasive procedure for most people. However, the strong magnetic field used in MRI can pose risks if you have metal implants or certain devices.

Devices That May Prohibit MRI Scanning:

• Cardiac pacemakers
• Internal defibrillators
• Cochlear implants
• Brain aneurysm clips
• Certain metal prosthetics or fragments

Always notify the radiographer about any implanted device or foreign metal in your body before the scan.