The Sound of Tissue is 1550m/s. What frequency ultrasound wave should you use to make sure you probe 65mm into the body?
To calculate the frequency of the ultrasound wave that should be used to probe 65mm into the body, you need to use the formula:
frequency = speed / wavelength
First, convert the depth of penetration from millimeters to meters. Divide 65mm by 1000 to get the depth in meters:
65mm ÷ 1000 = 0.065m
Next, you need to calculate the wavelength of the ultrasound wave using the formula:
wavelength = speed / frequency
Since you want to solve for frequency, rearrange the formula:
frequency = speed / wavelength
Now, substitute the values into the formula:
frequency = 1550m/s / 0.065m
frequency ≈ 23846.15 Hz
Therefore, the frequency of the ultrasound wave should be approximately 23846.15 Hz to probe 65mm into the body.