What to expect
when you come for MRI?
Prior to the examination,
you will be asked questions to satisfy a safety
You will need to change into a hospital gown, and all your
belongings, especially magnetic cards and jewellery should be stored
in the locker provided.
The procedure will be
carried out in the MRI Suite of the Neuroradiology department, NNI.
Inside the scan room, you will be given a pair of disposable
earplugs so as to reduce the thumping noise produced during the
scan. There is a 2-way intercom system, and you will also be given a
hand buzzer as a precaution. Throughout the examination, it is
important for you to stay absolutely still as any slight movement
during the scan will adversely affect the image quality. The entire
procedure may take up to half an hour: longer if intravenous
contrast media is used, for flow studies and tumour follow-up. In
certain situations such as children or ICU patients
requiring mechanical ventilation, scan times may be prolonged due to
safety precautions. All monitoring equipment in the Scan room is MR
compatible, including anaesthetic machine.
aspect of MRI.
MRI is generally a safe
procedure. However, strong magnetic fields influence wires and
ferrous metallic objects and may cause discomfort or even
life-threatening accidents due to movement, heating, or
electromagnetic stimulation. The purpose of the MR safety questionnaire is,
determine if there is an increased risk during MR scanning arising
from metallic objects implanted surgically or accidentally. You
inform your healthcare professional if there is the slightest
suspicion any such implants are placed in your body.