ARDMS (American Registry for Diagnostic Medical Sonography) Practice Test

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Which control on the ultrasound system should be adjusted if it is necessary to reduce the amount of noise in the image?

Amplification
Compression
Demodulation
Reject

The correct answer is: Reject

When using an ultrasound system, the reject control is responsible for reducing noise in the image. Amplification is used to adjust the overall brightness of the image, compression is used to adjust the dynamic range of the image, and demodulation is used to remove undesirable artifacts from the image. Therefore, the reject control is the best option for reducing noise specifically.