When treating small superficial areas like fingers with ultrasound, what is the best frequency to use?

When treating small superficial areas, such as the fingers, utilizing a frequency of 3 MHz is ideal because it provides a more effective therapeutic effect for those specific regions. Higher frequencies, like 3 MHz, are absorbed more quickly by superficial tissues, which allows for deeper penetration into smaller areas and promotes better tissue healing through increased thermal effects and enhanced cellular metabolism.

This frequency is particularly important in targeting areas with less tissue mass, like fingers, where precision in treatment depth is crucial. The 3 MHz frequency ensures that the ultrasound waves can effectively interact with the superficial structures, making it more beneficial for conditions such as minor sprains or tendonitis in the fingers.

The other options—1 MHz, 2 MHz, and frequencies higher than 3 MHz—are either better suited for deeper tissues or may not achieve the same level of efficacy in superficial treatments, thereby making 3 MHz the best choice in this scenario.