What do MRI and ultrasound have in common as diagnostic imaging techniques? Choose three correct answers.

Both MRI and ultrasound are noninvasive: neither requires surgery or instruments to enter the body. They are considered low risk for tissue damage and do not use ionizing radiation. MRI uses radio waves, but ultrasound uses sound waves, so “uses radio waves” is not common to both; ultrasound also does not produce tomographic images in the same way MRI does.

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