MRI - (Magnetic Resonance Imaging), MR, and MR Arthography

MRI scans in St Louis


Magnetic resonance imaging (MRI) is a noninvasive medical test that helps physicians diagnose and treat medical conditions.  MRI uses a powerful magnetic field, radio frequency pulses and a computer to produce detailed pictures of organs, soft tissues, bone and virtually all other internal body structures.  MRI provides very detailed information that is not always visible using other methods.  The images can then be examined on a computer monitor by a radiologist.  MRI does not use ionizing radiation (x-rays).  Detailed MR images allow physicians to evaluate various parts of the body and determine the presence of certain diseases.

Imaging Areas

arms and legs, blood, blood vessels, bone, brain, breast, lungs, children, abdomen, gall bladder, head, neck and thyroid, heart, hormone, joints, kidney, pelvis, liver, muscles and tendons, pancreas, uterus, fallopian tubes, ovary, spine

Typical Preparations

Follow any pre-test instructions given to you. Dress comfortably and avoid wearing metallic items including, but not limited to jewelry, hairclips, underwire bras and hearing aids. You will be asked to remove all external metal objects prior your exam. If you have implanted metal stents, clips or a pacemaker, please bring any documentation you have regarding when they were placed and the manufacturer/model numbers. Please let us know if: • You are claustrophobic • You have a pacemaker, insulin pump or any other metal object implanted in or on you • You are pregnant or suspect you might be • Your referring physician prescribed a sedative. Please bring it with you and tell us • You are in kidney failure • You are on dialysis • You have an allergy to MRI dye *If you have an allergy to CT contrast dye or iodine, there is no cross reactivity with MRI contrast. MRI contrast can be safely administered. *Nursing Mothers Below is the American College of Radiology’s recommendation for nursing mothers who receive MRI contrast (gadolinium) Because of the very small percentage of gadolinium-based contrast medium that is excreted into the breast milk and absorbed by the infant’s gut, we believe that the available data suggest that it is safe for the mother and infant to continue breast-feeding after receiving such an agent [6]. Ultimately, an informed decision to temporarily stop breast-feeding should be left up to the mother after these facts are communicated. If the mother remains concerned about any potential ill effects to the infant, she may abstain from breast-feeding from the time of contrast administration for a period of 12 to 24 hours. There is no value to stop breast feeding beyond 24 hours. The mother should be told to express and discard breast milk form both breast after contrast administration until breast feeding resumes. In anticipation of this, she may wish to use a breast pump to obtain milk before the contrast-enhanced study to feed the infant during the 24-hour period following the examination. Source: ACR website http://www.acr.org/~/media/ACR/Documents/PDF/QualitySafety/Resources/Contrast%20Manual/2013_Contrast_Media.pdf/#2013_Contrast_Media_Manual.indd:.27756:10190

Offices of Service & Attending Physicians

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