Magnetic Resonance Imaging, Pelvis, Endorectal Coil

What This Test Is

Magnetic resonance imaging uses a strong magnet and radio waves to create detailed pictures of the inside of the body without radiation. For this exam, a small device called an endorectal coil is placed into the rectum to bring the imaging sensor close to the pelvic organs, which can improve the clarity of the images.

Why It Is Done

Doctors may order this exam to look more closely at the prostate, rectum, or other pelvic structures. It is commonly used to help evaluate prostate cancer, rectal conditions, or other abnormalities seen on earlier imaging. Your care team will explain the specific reason for your exam.

How to Prepare

You may be asked to follow bowel-preparation instructions before the exam, such as using an enema or changing your diet for a short time. Tell your care team about any implanted medical devices, metal in your body, allergies, or pregnancy concerns, because strong magnets can affect certain implants. Wear comfortable clothing and remove metal objects.

What to Expect During the Exam

The endorectal coil is gently inserted into the rectum while you lie on the exam table. You will lie still inside the MRI scanner, which makes loud tapping or knocking sounds. The scan may take some time, and you may be given earplugs or headphones. Let the technologist know if you feel uncomfortable at any point.