Dynamic Pelvic MRI / Defecography

dynamic pelvic MRI defecography

What is Dynamic Pelvic MRI/ Defecography?

Your healthcare provider has recommended you for a Dynamic MRI, which is a special type of magnetic resonance imaging (MRI) that creates detailed cross-sectional images of the pelvic floor, a network of muscles that stretches between the pubic bone and spine and the abdominal organs it supports. Our team of sub-specialized physicians utilizes Dynamic MRI to evaluate various conditions such as:

  • obtain information about the structure of the pelvic floor and how well the pelvic muscles are working
  • determine which compartments of the pelvis are damaged and to help identify specific pelvic muscle defects
  • provide information for surgical and treatment planning
  • diagnose pelvic floor dysfunction (also called pelvic floor disorders), including:
    • one or more of the pelvic organs falling out of position (a condition called prolapse)
    • the stretching or tearing of the pelvic floor which may cause incontinence, pelvic pain and/or constipation

This exam does not use any radiation, but does involve:

  • A soft gel that acts as a contrast agent will be injected into the rectum.

Before Arriving for Your Exam

We encourage patients to utilize the IMI online registration option where you will be able to complete the MRI Screening Questionnaire and the MRI and Pregnancy form (if applicable). This will help speed up your registration process.

If you are claustrophobic (fearful of small, enclosed areas) or experience pain when lying on your back for more than 30 minutes, your referring physician may prescribe a relaxant or pain medication to help you through the exam. Please let the IMI Team know of any concerns upon scheduling your appointment, so we can make certain you have what you need to complete your exam successfully.

We don’t anticipate a long wait time, however, we want to make any waiting time as pleasant as possible. Consider bringing your favorite magazine, book or music with headphones to help you pass the time.

Unless you are told otherwise, you may follow your regular daily routine and take food and medications as usual.

Please leave your jewelry and valuables at home.

You will be asked to wear scrubs during the exam.

After Arriving

Please tell the technologist, radiology nurse and/or radiologist of any allergies you may have and if you are pregnant or nursing.

You will be asked to fill out a questionnaire which will determine if an MRI is safe for you. People with various implants (usually metallic), body piercings or with metal in their bodies (including some tattoos) may have difficulty with an MRI – which utilizes a strong magnetic field. The imaging physician needs to be informed of any of these potential problems.

You will be asked questions that verify the soft gel that acts as a contrast agent is safe for you.

During the Exam

An MRI machine consists of a large cylinder-shaped tube with a moveable table that slides into the center of the machine. For this exam, you will be asked to lie down on the scanning table, head-first with arms at your side.

A soft gel-like substance that acts like contrast material will be placed in your rectum. A cloth will be placed under you to absorb anything that may leak out during the exam.

Coils (special devices to improve image quality) will be placed on or around your pelvis.

The scanning table will slide your whole body into the magnet. During the scan, you will not feel anything but will hear intermittent humming, thumping, clicking and knocking sounds. Headphones will be provided to help mask the noise and to allow you to listen to music. As your images are taken, you must hold very still.

As part of the exam, you will be asked to “expel” the contrast material while scanning to simulate a bowel movement.

The technologist is always able to see and hear you during the exam.

clockThe MRI exam takes approximately 60 minutes depending on the exam specifics that are ordered.

After Your Exam

There are no restrictions placed upon you. You may eat or drive as normal. Your images will be examined by a radiologist and their report will be sent to your healthcare provider. Your healthcare provider will review the results with you.

documentsTo request a copy of your report or images, call us at 208-954-8130.


IMI Locations & Directions

IMI has 3 locations to serve you within the Boise, Meridian, and Eagle areas.

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