Which kind of waves are used in sonography?

Infrared waves

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Micro waves

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Sound waves

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Ultrasonic waves

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Solution

The correct option is C Ultrasonic waves
Sonography is a medical imaging technique that uses high-frequency sound waves and their echoes. Since high-frequency sound waves are needed for sonography, ultrasonic waves are used. Ultrasonic waves are high-frequency waves with a frequency greater than $20 k H z$

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