Cochlear (ear) implants, clips used for brain aneurysms, metal coils placed within blood vessels, any kind of cardiac defibrillator or pacemaker generally means you cannot be placed in an MRI machine. [2] X Research source Some metallic implants pose a some risk to health and safety and the accuracy of the exam. However, depending on how long the devices have been in place before the exam it might be safe to undergo the exam with some of the following in place: artificial heart valves, implanted drug infusion ports, artificial limbs or metallic joint prosthetics, implanted nerve simulators, metal pins, screws, plates, stents, and surgical staples.
Pregnancy History of kidney problems Allergy to iodine or gadolinium History of diabetes[3] X Research source
An MRI is a large tube with holes on either end. You’ll be placed on a moveable table that slides into the tube while a technologist monitors you from another room. Magnetic fields and radio waves provide an internal reading of your body, used to detect things like brain tumors or brain cancer, chronic conditions, and other abnormalities. The procedure, however, is painless as you do not feel the magnetic fields. The MRI machine makes a lot of noise while the procedure is taking place. Many patients opt to bring earplugs and listen to music or books on tape during the process. Exams vary in length, but some can be quite long. It occasionally takes up to an hour for an exam to be completed.
All jewelry [7] X Research source Eyeglasses Hairpins/Barrettes containing metal Dentures Watches Hearing aids Wigs Underwire bras
This form will also ask questions about allergies and any past reactions you have had to contrast materials used in imaging procedures. Some MRIs require an intravenous injection of a contrast material called gadolinium, which can cause an allergic reaction in rare instances. [8] X Research source
During the MRI, you will be able to hear and speak with your doctor or MRI technician. In some cases, you may be asked to perform some simple tasks, such as tapping your fingers or answering some easy questions. [9] X Research source Stay as still as possible during the procedure. You will be instructed to stay still to ensure that the images will be clear. Just try to breath normally and stay still.
