MRI Defecating Proctorgram

What is MRI Defaecating Proctogram?

This is an examination of the pelvis and rectum (back passage) and the way the muscles around this area work. This test is commonly used to assess pelvis prolapse or in people with obstructive defaecation.

Why do I need the study?

The decision to request this study is made by the doctor and specialist team responsible for your care. The information obtained from the study will allow your doctor to decide the best treatment for you.

Where will the procedure take place?

The procedure will take place in the MRI scanner within the X-ray department.

Who will be performing the study?

A specially trained Consultant Radiologist and a MRI Radiographer with special expertise in using MRI equipment will work together during the examination.

How do I prepare for the study?

For the test to be successful we require your back passage to be empty. You are asked to use suppositories prescribed by your doctor to help you open your bowels. You are asked to follow the instructions below regarding insertion of the rectal suppositories.

Using Suppository

Preparation: Glycerine suppository (1 tablet – 4g FOR RECTAL USE ONLY) 4 hours before the procedure, this can be brought from any pharmacy or supermarket.

The suppositories are for rectal use only and should be used as follows.

1. Remove plastic wrapping.
2. Lie on left side and draw your knees up towards your chest, with your right leg drawn up a little more than your left.
3. Using your forefinger (index finger) or middle finger, whichever you find easier, gently push the suppository into the rectum, pointed end first. The suppository should be inserted into the rectum as far as possible.
4. Lower your legs into a comfortable position to help you hold the suppository in place.
5. The suppository will encourage a stool motion to empty the rectum. Stay in the facility of a toilet. This will often happen within 30 minutes if there are stools in the rectum / lower bowel.

 Contraindications

The suppositories are not suitable for children or infants. Do not use if pregnant or breast feeding.

Caution

The suppositories must not be taken by mouth. Do not use if sensitive or allergic to glycerine. This product contains gelatine and purified water. If you accidentally swallow a suppository, see a doctor straight away.

What happens during MR Defaecating proctogram?

When you get to the X-ray department a member of staff will talk to you to check that it is safe for you to have an MRI scan.

You will then be asked to change into an examination gown, removing any jewellery, hearing aid, credits cards and any attached medical devices etc.

Please ensure your bladder is also empty prior to the examination.

You will be asked to lie on the scanning table and the tip of the catheter tip syringe will be inserted into the bottom to allow small quantity of special water based gel into the rectum. The tube will then be removed and you will be asked to lie on your back. You will then be asked to clench, relax, and push the gel out while pictures are taken.

During the procedure, the radiographer will be able to see only your face on a video camera- we will try to ensure adequate privacy for the examination.

Will it hurt?

The scan itself is painless, although you may fell slight discomfort and fullness when the gel is inserted. If the skin around the back passage is sore or you have haemorrhoids it can be a little uncomfortable.

You will probably already have had your back passage examined by the doctor sending you for this test, so the risk of causing any damage to your back passage during the study is felt to be very low.

How long will the procedure take?

The timing for the scan is short however, you may remain in the MRI department for up to 45 minutes to 1 hour.

What happens afterwards?

Once your examination is completed, the MRI staff will provide some wipes to remove any residual gel and will be able to use the toilet. Images will be examined in detail by a Consultant Radiologist and the results will be sent to the doctor who requested the test.

Any complications or risk?

This is generally a safe procedure with no known risk or complications.

Who can I contact for further information?

If you have any questions regarding the procedure or you require further information, please speak to your doctor or contact the MRI department on 01582 718126, 01582 2479