No special preparation is usually needed for an MRI of the elbow. However, you will need to remove any metal objects from your body, such as jewelry or hearing aids, as these can interfere with the MRI machine. You may also be asked to wear a hospital gown during the exam.It is important to inform your doctor if you have any metal implants or devices, such as a pacemaker, artificial joint, or cochlear implant, as these may prevent you from having an MRI. You should also inform your doctor if you are pregnant or have any other medical conditions that may be affected by the magnetic field of the MRI.