An echocardiography uses high-frequency sound waves to show the heart during contraction and relaxation.

Name: An echocardiography uses high-frequency sound waves to show the heart during contraction and relaxation.
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This statement is true. Echocardiography is a noninvasive imaging test that uses high-frequency sound waves, also known as ultrasound, to produce images of the heart's structure and function during contraction and relaxation.

An Echocardiography Uses High-Frequency Sound Waves to Show the Heart