Which set of numbers listed corresponds to the diathermy frequencies in the material?

Which set of numbers listed corresponds to the diathermy frequencies in the material?

• A. 13.56, 27.17, 40.68
• B. 11.11, 13.56, 27.17
• C. 27.17, 40.68, 50.00
• D. 13.50, 27.15, 40.70

Answer: (A)

Diathermy devices are designed to operate at specific ISM radio-frequency bands so heating tissues occurs safely and predictably. The standard medical diathermy frequencies are 13.56 MHz, 27.12 MHz, and 40.68 MHz. The set that lists 13.56, 27.17, and 40.68 MHz matches this typical triad (27.17 is essentially the same value in common labeling due to rounding in some specs). The other sets include frequencies that aren’t part of the standard medical diathermy allocations or deviate noticeably from these common values, so they don’t align with what the material uses.

Diathermy devices are designed to operate at specific ISM radio-frequency bands so heating tissues occurs safely and predictably. The standard medical diathermy frequencies are 13.56 MHz, 27.12 MHz, and 40.68 MHz. The set that lists 13.56, 27.17, and 40.68 MHz matches this typical triad (27.17 is essentially the same value in common labeling due to rounding in some specs). The other sets include frequencies that aren’t part of the standard medical diathermy allocations or deviate noticeably from these common values, so they don’t align with what the material uses.