The sound level of 3.47 10⁻² W/m² ultrasound used in medical diagnostics is 105.4 dB.
Sound intensity, also known as acoustic intensity, is defined as the power carried by sound waves per unit area in a direction perpendicular to that area.
dB = 10 Log(I/I₀)
where;
I₀ is threshold sound intensity = 10⁻¹² W/m²
dB = 10 Log(3.47 x 10⁻² / 10⁻¹²)
dB = 105.4 dB
Thus, the sound level of 3.47 10⁻² W/m² ultrasound used in medical diagnostics is 105.4 dB.
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