The Magnetic Resonance Imaging (MRI) is a diagnostic tool that utilises strong magnetic field and radio frequency waves to create images of the body. No X-rays or radioactivity is involved. The magnetism and radio frequency are safe as they cause no known biological harm to cells or chromosomes at the current strength.
The Department operates three MRI scanners consisting of 1.5 Tesla superconducting magnets and one high field 3.0 Tesla system. One of the 1.5T MR system is located at Neuroradiology's newly setup Outpatient Imaging Centre since March 2015.
The 3T scanner has double the magnetic strength of a 1.5 MRI system. This results in significantly higher signal-to noise ratio which allows for more accurate imaging and clearer depiction of the blood vessels of the brain. This is especially useful in patients with stroke, brain tumours and epilepsy.
In addition to fast and accurate clinical imaging, our MRI scanners are also able to perform functional MRI (fMRI) and proton spectroscopy. The fMRI studies can be done in real time, thus enabling the result to be known immediately and removing the need for repeat studies.
Cerebrospinal fluid flow (CSF) studies are regularly done in addition to the routine scanning of patients with headaches, giddiness and stroke or transient ischaemic attacks (TIA).
The availability of advanced imaging techniques such as diffusion and perfusion imaging has greatly improved diagnostic workshop of complex neurological conditions.
Pre-surgical localisation of brain tumours and other lesions is carried out regularly. These stereotactic procedures enable the surgeon to precisely locate the lesion during the operation.
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