What is the most common frequency range used for ultrasound therapy?

The most common frequency range used for ultrasound therapy is between 1 MHz and 3 MHz. This frequency range is particularly effective for therapeutic applications due to its ability to penetrate tissues at varying depths and produce mechanical vibrations that facilitate tissue healing.

In clinical settings, 1 MHz is generally used for deeper tissue penetration, making it ideal for targeting structures located several centimeters deep, such as muscles and joint capsules. Frequencies around 3 MHz are typically used for superficial tissues, as they provide more localized heating of the skin and subcutaneous layers. The effective use of these frequencies allows healthcare providers to tailor treatment to the specific needs of the patient, enhancing outcomes during therapies.

Using frequencies outside this range, such as those below 0.5 MHz or above 3 MHz, tends to be less common for therapeutic ultrasound. Lower frequencies may not produce the desired therapeutic effects due to inadequate penetration, while higher frequencies can cause excessive heating in superficial tissues, leading to discomfort and potential tissue damage. Therefore, the selection of 1 MHz to 3 MHz strikes a balance between effective tissue penetration and therapeutic efficacy.