Magnetic Resonance Imaging (MRI)
An MRI scan, unlike a CT scan or X-ray, does not use radiation to capture the images - it uses the property of magnetic resonance. An MRI scan combines images to create a 3D picture of the patient’s internal structures. It is used to detect abnormalities in small structures of the brain such as the pituitary gland and brain stem. Sometimes a contrast agent (dye) is administered intravenously to better visualise certain structures or abnormalities.
How is it performed?
- Before the scan begins, the patient is asked to change into a hospital gown and all metal objects, like jewellery, dentures and so on, must be removed.
- While performing the scan, it is important that the patient lies still in order to obtain the clearest images. If they are unable to do so, a mild sedative might be given.
- The patient lies down on a table that slides into the MRI machine.
- Once the scan begins, the table slides into the machine till the part of the body that needs to be scanned is under the circular magnetic structure.
- A technician then takes several images of the suggested area. The test normally takes 30 to 60 minutes.
- The patient may be given a contrast solution through an IV, usually gadolinium, to take images of certain parts of the body, particularly the blood vessels.
- Once the scan is completed, the table is pulled out of the machine and the patient can leave the room.
- The images are then sent to the radiologist for examination.
- The MRI scanner makes loud banging noises during the procedure. Our MRI scanner has a wide bore, specifically to cater to claustrophobic patients and an immersive audio-visual experience to help them stay calm.
- There are no risks associated with an MRI scan. However, there is a slight chance of developing an allergic reaction to a contrast solution.
