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Magnetic Resonance Imaging (MRI)

What is Magnetic Resonance Imaging (MRI)?

MRI uses a strong magnetic field and radio waves to produce detailed images of soft tissues, bone, fat, cartilage, ligaments, tendons, muscles and the internal organs of your body. MRI does not use ionising radiation.

At Queensland X-Ray we can provide referrers and patients with a choice between 3T and 1.5T scanners. The process whilst in the scanner is often quicker with a 3T scanner, however scan times depend on what body part is being imaged.

3T MRI

The most advance MRI scanner available clinically...

1.5T MRI

Produces superior cardiac images, even over it's more powerful brother....

Wide-bore MRI

Our scanner at Coorparoo features an ultra-wide bore of 70cm for improved patient comfort...

What should patients expect when they arrive for their appointment?

When arriving, patients will be asked to complete an MRI questionnaire. This is to ensure any objects that are not MRI safe will not be taken into the MRI room. Patients may be asked to change into a gown as clothing may have metallic components which would interfere with the pictures that are to be taken. Because the MRI equipment has a strong magnetic field, patients will also be asked to leave all loose items, including watches, jewellery, keys, cigarette lighters and credit cards, outside the examination room in a locker.

The magnet makes a knocking and humming sound when scanning, which is 70-100db (as loud as a lawnmower). To help lessen this noise, patients are given earplugs and, if possible, headphones as well. In some circumstances patients can listen to music with these headphones, so the noise is less disturbing. When the knocking stops, the computer processes the images for a few seconds before the next scan.

The MRI radiographer will position patients on the MRI table and explain what to expect. Patients will be given a ‘buzzer’ to squeeze if there is discomfort at any point during the scanning process. It is very important to remain as still as possible during the scans to avoid any blurring of the images. Between scans, the MRI radiographer will communicate with the patient to ensure they are comfortable and inform them of the progress of the examination.

In some cases, it may be necessary to show the blood supply to the body region being scanned. A special fluid (called contrast or Gadolinium) may be injected, usually into the vein on the inside of the elbow, or on the back of the hand. Sometimes, an unusual smell or taste can be associated with this injection. As with any injection, there is a small chance of an allergic reaction. Although this is rare, a reaction can be very serious. It is important to advise the staff performing the examination of any past reaction to MRI contrast.

How long does it take?

The examination will take between 15 minutes and one hour to complete, depending on the area of body being examined.

Is there any special preparation?

No preparation is required for an MRI of the brain, spine, joints, breast or heart. Scans of the breast to query cancer need to be scanned between days 5-10 of their menstrual cycle. If a patient does not have a menstrual cycle they can be scanned at any time. Scans of the upper abdomen and pelvis require fasting for six hours prior to the scan. Scans of the small or large bowel require a bowel prep kit (Go Kit) which the patient can collect from the practice at least 24 hours prior to the appointment.

Please bring any previous films to the appointment.

It is important to advise the referring doctor, the receptionist, and the radiographer if:

• Patients have a pacemaker, cerebral aneurysm clips or a surgically implanted medical device or implant;

• It is possible that patients are pregnant; or

• Patients have a history of working with metal.

What should I do if I am claustrophobic?

When booking the scan, patients should inform the receptionist if they may be claustrophobic, and sedation for the scan will be organised. It is important to remember that if sedation is required, patients will not be allowed to drive for 24 hours.

If the patient is claustrophobic, when booking the MRI - ask for a referral to our wide bore MRI scanner at Coorparoo Brisbane.

How much does it cost?

Most MRI studies will attract a Medicare rebate for an MRI examination if referred by a specialist (a gap fee may also apply). If referred by a non-specialist (i.e. general practitioner) patients will not be eligible for a Medicare rebate for their scan.

Please consult the receptionist at the practice for information on the costs associated with the examination. This will be discussed in full at the time of booking the appointment.