short note on ultrasound
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Ultrasound is a type of imaging. It uses high-frequency sound waves to look at organs and structures inside the body. Health care professionals use it to view the heart, blood vessels, kidneys, liver, and other organs. During pregnancy, doctors use ultrasound to view the fetus.
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Explanation:
ultrasound in the sound more than the 20,000 hertz. It can only be heard by animals like bat. Bats use This sound to locate their prey at night .
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