MAGNETIC RESONANCE IMAGING (MRI)
CitiScan's 16-channel MR enables faster and higher-resolution scans, resulting in superb image quality and potentially more accurate diagnosis. CitiScan staff are trained to alleviate any insecurities or concerns (eg: claustrophobia) that patients may have.
Magnetic Resonance Imaging (MRI) is a completely painless scanning procedure that uses magnetism and radiofrequency pulses to gather signals from certain parts of the body. MRI is often used to gain more information about the body where other tests such as X-rays or ultrasounds have detected a problem. MRI does not use radiation, required for many other types of imaging, and is not known to have any long term harmful effects.
You will be asked to fill in a safety questionnaire before your scan to ensure that it is safe for you to enter the MRI machine and be exposed to the magnet. This is because there are many implants such as pacemakers or certain wires or clips that may be in your body, or other articles such as hearing aids or devices that may be around your body that could make the test unsafe. It is important you read the questionnaire carefully and answer all the questions. If there is anything you don’t understand or if you are unsure if it applies to you, please ring the hospital or private radiology practice where you are having the scan and ask for further information. You will not be scanned if you have any implants that may make the scan unsafe.
Please bring any previous X-ray or ultrasound scan films that may be relevant to why you are having the scan. It is important you do not wear any makeup or hairspray as many of these products have minute metal particles that may interfere with the scan and reduce the quality of your images or cause the area to heat up and, on the rare occasion, burn your skin. You will not be able to take anything into the scan room with you however lockers are available. You will find it easier to bring with you only the things you need for the scan. Objects that you usually wear or have in your pockets should be left at home if at all possible. Such items include watches, jewellery, mobile phones, belts, safety pins, hair pins and credit cards. Take all medications as you normally would, unless you are otherwise advised.
during your examination
After entering the scan room, you will be asked to lie on the scan table. The part of your body to be scanned will be carefully positioned and secured so you are comfortable and more likely to remain still. Your head may be inside or outside the scanner depending on the distance between it and the body part to be scanned. Both ends of the machine are open and will not close. It is well lit inside and you may have a mirror to look out of the scanner. When the scan begins, you will hear a very loud knocking noise. This will last for the length of each scan. You will be able to talk to the radiographer between each scan and you will be given a buzzer to press in case you are not comfortable or want to come out of the machine at any time. An MRI scan may involve the injection of a special dye (called contrast) into the veins during the scan.
The test can take anywhere between 10 minutes to over an hour to complete. This depends on the part of the body being imaged and what techniques are required to give the doctor the information requested.
after your examination
There should be no after effects of the MRI scan.
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