Calculate ultrasound wavelength, resolution and penetration depth by frequency.
Higher frequency shortens the wavelength and improves resolution, but attenuation rises in proportion to frequency, so penetration falls. That inverse relationship is why deep abdominal imaging uses low frequencies and superficial structures use high ones. Transducer selection is entirely governed by this trade-off, and no amount of gain recovers signal that has been attenuated below the noise floor.
Ultrasound Physics
λ = c ÷ f; axial resolution = spatial pulse length ÷ 2; attenuation ≈ 0.5 dB/cm/MHz
This is an educational physics tool. It is not intended for clinical diagnostic decisions or equipment configuration, which must be handled by qualified sonographers and medical physicists.
λ = c ÷ f; axial resolution = spatial pulse length ÷ 2; attenuation ≈ 0.5 dB/cm/MHz Higher frequency shortens the wavelength and improves resolution, but attenuation rises in proportion to frequency, so penetration falls. That inverse relationship is why deep abdominal imaging uses low frequencies and superficial structures use high ones.
Transducer selection is entirely governed by this trade-off, and no amount of gain recovers signal that has been attenuated below the noise floor.
This calculator takes 4 inputs: Transducer frequency, Propagation speed in tissue, Cycles per pulse, Imaging depth. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.