LAB TEST
Abdominal MRI scan
An abdominal magnetic resonance imaging scan is an imaging test that uses powerful magnets and radio waves. The waves create pictures of the inside of the belly area. It does not use radiation (x-rays). Single magnetic resonance imaging (MRI) images are called slices. The images can be stored on a computer, viewed on a monitor, printed on film or scanned to a disk. One exam produces dozens or sometimes hundreds of images.
How the Test is Performed
You may be asked to wear a hospital gown or clothing without metal zippers or snaps (such as sweatpants and a t-shirt). Certain types of metal can cause blurry images. You will lie on a narrow table. The table slides into a large tunnel-shaped scanner. Some exams require a special dye (contrast). Most of the time, the…
How to Prepare for the Test
You may be asked not to eat or drink anything for 4 to 6 hours before the scan. Tell your health care provider if you are afraid of close spaces (have claustrophobia). You may be given a medicine to help you feel sleepy and less anxious. Your provider may also suggest an open MRI, in which the machine is not as close…
How the Test will Feel
An MRI exam causes no pain. You may get medicine to relax you if you have a problem lying still or are very nervous. Moving too much can blur MRI images and cause errors. The table may be hard or cold, but you can ask for a blanket or pillow. The machine makes loud thumping and humming noises when turned on. You can…
Why the Test is Performed
An abdominal MRI provides detailed pictures of the belly area from many views. It is often used to clarify findings from earlier ultrasound or CT scan exams. This test may be used to look at: Blood flow in the abdomen Blood vessels in the abdomen The cause of abdominal pain or swelling The cause of abnormal blood test…
What Abnormal Results Mean
An abnormal result may be due to: Abdominal aortic aneurysm Abscess Cancer or tumors that involves the adrenal glands, liver, gallbladder, pancreas , kidneys, ureters, intestines or bladder Enlarged spleen or liver Gallbladder or bile duct problems Hemangiomas Hydronephrosis (kidney swelling from the backflow of…
Risks
MRI does not use ionizing radiation. No side effects from the magnetic fields and radio waves have been reported. The most common type of contrast (dye) used is gadolinium. It is very safe. Allergic reactions are rare but can occur. If you have a history of severe allergic reactions to other medicines you should…
References
Al Sarraf AA, McLaughlin PD, Maher MM. Current status of imaging of the gastrointestinal tract. In: Adam A, Dixon AK, Gillard JH, Schaefer-Prokop CM, eds. Grainger & Allison's Diagnostic Radiology: A Textbook of Medical Imaging . 7th ed. Philadelphia, PA: Elsevier; 2021:chap 18. Levine MS, Gore RM. Diagnostic imaging…
This is a summary. Read the full article at www.ucsfbenioffchildrens.org (reviewed 05/07/2022).
This page is general information and is not medical advice. It does not replace a registered doctor, and it is not a prescription or a recommendation to use any medicine or test. Prices are listed prices and may change. Always follow the advice of your doctor or pharmacist.