What is the trade-off of using higher frequency transducers?

• A. Improved penetration with reduced resolution
• B. Improved resolution with reduced penetration
• C. No change in resolution or penetration
• D. Increased lateral resolution only

Answer: (B)

Higher frequency transducers provide shorter wavelengths, which improves spatial resolution (especially axial resolution) because the system can distinguish structures that are closer along the beam path. However, higher frequency waves are more attenuated as they travel through tissue, so they lose energy more quickly and imaging depth decreases. This combination—better detail with shallower penetration—embodies the trade-off.

So the best answer reflects improved resolution with reduced penetration. The other options don’t fit because higher frequency does not improve penetration, and the trade-off isn’t limited to lateral resolution only (axial resolution also improves, and depth is reduced).