Magnetic Resonance Imaging (MRI) is an advanced technology that uses magnetic fields and radiofrequency waves to produce images of various parts of the body including, bone, soft tissue, ligaments, muscles, joints, blood vessels and other internal organs.
Overview
MRI is a medical imaging procedure that uses strong magnetic fields and radio waves to produce cross-sectional images of the body. MRI can give different information about structures in the body than can be obtained using standard X-Ray, Computed Tomography (CT) or Ultrasound. In some cases, a contrast agent may be required to show internal structures or abnormalities more clearly.
MRI does not use ionising radiation. There are no known harmful side effects associated with temporary exposure to a strong magnetic field, but for important safety considerations please see the preparation below.
Preparing for an MRI scan
Please bring your referral (letter from your practitioner) and your Medicare and/or Pension Healthcare card with you to your appointment. It is important to bring all previous imaging relating to the region being scanned.
In most cases, no special preparation is needed. However, there may be some circumstances in which you will be given specific instructions to follow before the exam and our staff will inform you at the time of booking, if necessary.
- Musculoskeletal scans usually require no special preparation.
- Upper Abdominal MRI (including Liver, Pancreas, and Kidney (Renal), requires 4-hour fasting.
- MRCP (Magnetic Resonance CholangioPancreatography) requires 8-hour fasting.
The MRI scanner uses a strong magnetic field, which will move ferromagnetic objects. You must let your doctor know if you have:
- A pacemaker
- Aneurysm clips
- Cochlear implants
- A neurostimulator
- Metal implants
- Steel surgical staples or clips
- An implanted drug infusion device
- Any implant made partially or wholly of iron or steel
If you are pregnant, please inform your referring doctor and the radiographer.
Prior to your scan remove any coins, wallets, jewellery, watches, keys, dentures or partial plates. It is best to leave any valuables at home.
Scanning
For your safety you will be required to complete a questionnaire, prior to the examination. Our qualified and experienced radiographer will perform the MRI scan.
You may be asked to change into a gown.
The radiographer will ask you to lie on the MRI table and you will be positioned according to the region of the body being imaged. A specialised coil will be placed over the relevant anatomy and the MRI table will move into the scanner for the duration of the scan.
When the MRI scan starts, you will hear some loud knocking noises. These sounds occur whenever the MRI images are being taken. You will be provided with earplugs or headphones with music to help block out the MRI noise. While you are having your scan done, you can communicate with the technologist at any time through an intercom system and you will be provided with an emergency button.
The MRI scan can take 15 to 30 minutes and may take longer for multiple regions. It is very important that you remain still during the scanning time as movement will degrade the quality of the images.
To allow the radiologist to see the anatomy/pathology more clearly, you may require an injection of an MRI specific contrast agent. If so, you will be asked to give your consent to the injection. MRI contrast agents typically have few or no side effects.
After the exam, you can go back to your everyday activities.
If you have further questions about your MRI exam, our staff will be happy to answer them.
For severe cases of claustrophobia, light sedation can be provided. Please discuss this with your referring practitioner prior to booking. Four hours fasting is required and you must bring someone to drive you home after the MRI scan.
Results
Results may be provided electronically to your referring doctor or specialist.
Synergy Radiology strongly advises that you return to your practitioner, in order for your doctor to discuss your radiology report with you.
We understand that some patients are anxious about having tests performed. If you do have any questions or concerns, please do not hesitate to ask our staff.
FAQs
How long does the MRI scan take?
The MRI scan can take 15 to 30 minutes and may take longer for multiple regions. It is very important that you remain still during the scanning time as movement will degrade the quality of the images.
Can I sleep during my scan?
Yes, the MRI scanner can be quite noisy, but you will be provided with earplugs or headphones with music to help block out the MRI noise.
Can someone come into the scan room with me?
If you are claustrophobic and require a friend or family member to accompany you, it will be permitted provided that they meet the safety requirements after completing the safety questionnaire.
Are there any physical effects of having an MRI scan?
Prolonged exposure to radio waves during the scan may lead to slight warming of the body. This is a normal effect but please notify the radiographer if the heating effects become uncomfortable.
How strong is the magnetic field?
The MRI field strength is 1.5 or 3.0 Tesla- which is a strong magnetic field. It is important to comply with all safety procedures and instructions given by the qualified MRI staff.
Can I bring my own music to listen to?
Yes, but it is not always possible to use headphones. Alternatively, earplugs will be provided. If you do have any questions, please ask at the time of booking.
What if I am claustrophobic?
You will be reassured by an experienced MRI radiographer but in severe cases of claustrophobia, light sedation can be provided. Please discuss this with your referring doctor prior to booking. Four hours fasting is required and you must bring someone to drive you home after the MRI scan.
Can my MRI scan be bulk billed?
Our MRI scanners at Auburn, Campsie and Norwest medical imaging are partially funded scanners which enables us to Bulk Bill referrals for specific regions and indications determined by Medicare.
Rouse Hill medical imaging now Bulk Bill Specialist and specific region GP Medicare eligible referrals.
Will the radiographer performing my scan, be able to tell me the results?
It is the radiographer’s duty to perform the test and ensure the images are clear for the radiologist (specialist) to interpret them.
