The rectum is the lower part of the large bowel, near the anus (back passage).
Magnetic resonance imaging (MRI) is a type of scan that uses strong magnets to generate meaningful signals from the imaged part of our body. These signals are detected by an antenna and processed by a computer to create images (or pictures) of the inside of your body.
Most of the MRI scanners are ‘O’ shaped and appear like a narrow tunnel with a table, on which you lie, slides into the tunnel. Both ends of the scanner are open. Some other MRIs are shaped like a C and other can look like a normal bed (open MRI).
1. Provide more detailed images of the rectum.
2. To help show if there is any evidence of cancer in the rectum
3. To show the size and extent of rectal cancer within the pelvis and accurately stage rectal cancer
4.To assess the involvement of pelvic lymph glands or other organs within the pelvis
5.To help in planning radiotherapy treatment for rectal cancer.
6. To follow up patients who had treatment for cancer rectum to look for recurrence.
You will be asked to complete a questionnaire and safety check. You will then change into a hospital gown and lie on the MRI scanner table.
The MRI machine produces loud knocking noises, you will either be given earplugs or headphones to listen to music of your choice.
The scan can take 30-40 minutes where you are required to lie as still as possible.
Nothing usually happen from the machine itself.
Some patients develop contrast allergy to MRI contrast which is extremely rare.
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