What Is Frequency And Wavelength In Ultrasound?

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The Frequency and Wavelength in Ultrasound Diagnosis: As stated earlier, ultrasound uses a high frequency and is considered ultrasound when the frequency is higher the 20,000 Hz – which is inaudible to the human ear. And in medical imaging, frequencies from 2 to 15 MHz or even higher are used. Wavelength is the distance between 2 points in which are identical in one wave cycle, for example the distance between a crest to another crest in a wave cycle. The wavelength is measured with the formula v=f λ (v=velocity in ms^-1, f= frequency in Hz and λ=wavelength in meters). In ultrasound diagnosis, wavelength plays a big role in affecting the resolution of an image created through ultrasound. As seen in the formula for wavelength earlier, wavelength