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MRI uses a strong magnetic field and radiowaves to produce images of cartilage, bone, muscle, ligaments, tendons, nerves, discs and other soft tissue. Complete the MRI safety form because some implants or devices cannot be scanned safely. Do not wear heavy eye make-up or jewellery. Abdominal or pelvic MRI examinations require fasting. Some examinations require injected contrast, which is not given if you have renal impairment. Earplugs or headphones are provided for the loud noises during scanning.