MRI cannot be performed without confirmation and documentation of the type of implant and MRI compatibility. If you have the pamphlet, bring it to the attention of the scheduler before the exam. Many implanted devices will have a pamphlet explaining the MRI risks for that device. These devices may interfere with the exam or pose a risk. Tell the technologist if you have medical or electronic devices in your body. some older cardiac defibrillators and pacemakers.some types of metal coils placed within blood vessels.some types of clips used for brain aneurysms. ![]() People with the following implants may not be scanned and should not enter the MRI scanning area without first being evaluated for safety: In most cases, an MRI exam is safe for patients with metal implants, except for a few types. mobile phones, electronic watches, and tracking devices.pins, hairpins, metal zippers, and similar metallic items, which can distort MRI images.jewelry, watches, credit cards, and hearing aids, all of which can be damaged.They can interfere with the magnetic field of the MRI unit, cause burns, or become harmful projectiles. Metal and electronic items are not allowed in the exam room. Leave all jewelry and other accessories at home or remove them prior to the MRI scan. ![]() If you have claustrophobia (fear of enclosed spaces) or anxiety, ask your doctor to prescribe a mild sedative prior to the date of your exam. See the MRI Safety During Pregnancy page for more information about pregnancy and MRI. Pregnant women should not receive gadolinium contrast unless absolutely necessary. Therefore, pregnant women should not have an MRI in the first trimester unless the benefit of the exam clearly outweighs any potential risks. However, the baby will be in a strong magnetic field. MRI has been used since the 1980s with no reports of any ill effects on pregnant women or their unborn babies. Women should always tell their doctor and technologist if they are pregnant. Some conditions, such as kidney disease, may prevent you from having an MRI with contrast material. The radiologist should also know if you have any serious health problems and what surgeries you have undergone. A gadolinium contrast agent is less likely to cause an allergic reaction compared to the iodinated contrast agents used in CT scanning. However, the contrast material used for an MRI exam is based on gadolinium and does not contain iodine. ![]() Usually, you will be instructed not to eat or drink anything for several hours before your procedure.īecause your procedure may require use of contrast material that is swallowed or injected into your bloodstream, the radiologist or technologist may ask if you have allergies of any kind, including allergies to food or drugs, hay fever, hives or allergic asthma. Guidelines about eating and drinking before an MRI exam vary at different facilities. You may be asked to wear a gown during the exam or you may be allowed to wear your own clothing if it is loose-fitting and has no metal fasteners.
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