MRI (Magnetic Resonance imaging) is one of the greatest advances in medical imaging used to visualize detailed internal structures. MRI does not utilize ionizing radiation but rather it utilizes a powerful magnetic field and a computer to produce detailed images of the body. Body MRI is used to evaluate organs of the chest and abdomen, including the heart, liver, bile ducts, spleen, adrenal glands, kidneys, pancreas and bowel. It is also used to evaluate both the male and female reproductive organs such as prostate, testicles, uterus and ovaries. Blood vessels throughout the body can be examined in a non-invasive manner (MR Angiography). Most recently MR is used to evaluate the breasts and to guide breast biopsies.

MR Enterography is a new alternative to evaluate the small bowel and colon without the use of ionizing radiation. It is an excellent non-invasive method utilized as an alternative to CT in patient with certain conditions such as Crohn’s Disease, Ulcerative Colitis, and bowel malignancies.

Preparation for the examination:

You must not eat or drink for TWO hours prior to the exam. You can continue to take your medications unless you are instructed otherwise.

MR Safety:

MRI is a unique environment. Safety is paramount. Powerful magnetic fields are used to create pictures of the inside of the body. The MRI is a giant magnet 5 times the strength of those used to pick up cars in a junk yard. The magnet is always on. Special shielding is put in place around the MRI machine for everyone’s protection.

A technologist will perform the examination. The technologist has been trained to provide a safe environment. Prior to proceeding with the examination you will be asked several safety questions as it relates to the MRI environment. Questions will be asked related to prior surgery, injuries and medications. If you have certain implantable medical devices and medications you will not be allowed to enter the MRI environment. You may have received a card from your physician identifying the device that has been implanted. Please check the card before you come for your appointment and call if you have a question. It is important to bring the card with you on the day of the examination.

You may be asked to get a routine x-ray prior to entering the MRI environment if there is a question of a foreign body that may be ferromagnetic especially if it is near your eyes (i.e. sheet metal worker or history of shrapnel).

Once the technologist has deemed it is safe for you to enter the MRI environment you will be asked to remove your wallet and probably your watch. The MRI magnet will erase the magnetic strip on credit cards and will stop the battery in you watch.

If you have any questions about whether the MRI will be safe for you, call and ask to speak with the MRI technologist or a Radiologist, a physician who will be reading the examination.

How is the study performed?

Please arrive 1 hour prior to your appointment. You will be asked to drink a negative oral contrast agent, called VoLumen, over the course of an hour which allows for better visualization of the intestines during the exam.

Prior the exam, you will be asked to change into a patient gown. Please DO NOT enter the scan room with any metallic objects including watches, keys, jewelry, hairclips, or coins. Credit cards and ATM card magnetic codes will be erased by the magnetic field, and should be kept outside of the MRI scanner at all times. Patients with metallic or electronic implants should alert the technologist prior to entering the room as the MRI may adversely affect these items. (Please see MR safety section)

You will be positioned on a movable exam table. Straps and cushions may be applied to assist in positioning and in certain cases a special device (coil) may be used to concentrate the magnetic field on the body part being examined.

Once you are in the scanner, prior to the exam beginning, 0.5 mg of Glucagon IV will be administered. Glucagon is a natural hormone secreted by the pancreas and aides in reducing bowel motion during the exam, to allow for improved assessement of the bowel. The effects of the Glucagon only last 8 to 11 minutes. Mid way through the exam, an additional 0.5 mg of Glucagon IV will be given. Near the end of the exam, a contrast agent (Gadolinium) will be administered by a nurse or technologist through a small catheter placed in a vein. The catheter is usually inserted prior to the procedure with the injection taking place during the procedure. Please notify the nurse or technologist prior to the exam if you have Diabetes or a Pheochromocytoma.

During the exam, you will be asked to remain motionless. The technologist may ask you to hold your breath during certain portions of the exam. You will hear faint hums and the thumping sound of the radio waves during the exam. You will be in constant contact with a caring, courteous technologist who will be there to assist you if the need arises. Please feel free to bring your favorite CD, as we have head phones available, to make your MRI experience more pleasurable.

The entire exam usually takes between 20 and 30 minutes. The technologist will check for completeness of the exam and acquire any additional images, as needed. If you had an IV inserted prior to the exam, it will be removed, and your exam will be complete.

Who will interpret the examination?

Your examination will be interpreted by a Radiologist, who is a Physician (M.D.) specifically trained to supervise and interpret radiology examinations. He/she will analyze the images and send a signed report to your primary care or referring physician, who will discuss the results with you. Upon request, you can arrange a consultation with the Radiologist who interpreted your examination.