MRI
What is an MRI?
Magnetic Resonance Imaging (MRI) is a diagnostic imaging technique that uses a strong magnetic field and radio waves to create detailed images of the inside of the body. During an MRI, the patient lies on a table that slides into a tube-like machine. The machine contains powerful magnets that align the hydrogen atoms in the body. Radio waves are then used to cause these atoms to emit signals, which are detected by the machine and converted into images by a computer. MRIs are particularly useful for examining soft tissues, such as the brain, spinal cord, and joints. They are non-invasive and do not use ionizing radiation like X-rays or CT scans.
Marlborough Medical Imaging manages the MRI on behalf of Pacific Radiology here in Marlborough.
“The staff were really pleasant and I was surprised how fast and easy the process was.”
Preparation for MRI
Duration of the scan and any preparation required depends on the MRI being requested and our friendly booking team will provide you with all required the information when making an appointment.
Because MRIs use powerful magnets, it’s essential that you take off any metallic things that could interfere with the scanner’s magnetic field and make the scan unsafe. Just let us know what it is and where it is.
It is important that you inform us if you have any implants or are pregnant.
During
Our state-of-the art MRI scanners are large, open at both ends and are often described as a short tunnel. Some parts of the body require the MRI technologist to place a piece of equipment either on top of you or around you. Once you are in position, you will be moved slowly into the scanner, either head first or feet first until the area of interest is in the middle of the scanner (tunnel). It’s important to keep still so we can get clear images.
As the scanner is very noisy, we will give you earplugs to protect your hearing, and headphones to allow us to communicate during your scan. Music can be played in the background, feel free to pick your favourite music or radio station.
Your scan will take on average 30 minutes, but may take between 10 minutes and two hours depending on what images are needed. Before the scan begins, your technologist will tell you how long it takes, so you know what to expect.
If you think you might suffer from claustrophobia, please let us know beforehand so we can provide techniques to keep you comfortable during your scan. Occasionally a calming medication (sedative) may be required to help you complete your scan. We advise that this is prescribed by your GP.
You will have a call button should you need to talk to the staff during your scan.
After
In most cases, you can eat, drink, exercise and go about your day as soon as the scan is completed. We will advise you before the scan should this not be the case.
If you had sedation for your scan, you will need somebody to drive you home, and to take it easy for the rest of the day.
The images taken during the examination are interpreted by one of our team of expert radiologists. We will then send your results to your doctor within 24-48 hours after a detailed report has been written. In urgent cases, results are made available as soon as possible. Your doctor will discuss the important findings and next steps with you.