A hearing aid is an electroacoustic device used to amplify and modulate sound for people with hearing loss. A hearing aid consists of three parts i.e. a microphone, an amplifier and a receiver. The microphone picks up sound and turns them into electronic signals. The amplifier amplifies the electronic signals. The receiver is a small speaker that changes the electric signals back to sounds and delivers the sound to the ear.
Hearing aids are considered as unsafe in a MRI room as the strong electromagnetic fields can damage the components of the device and must therefore be removed.
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