Which ultrasound mode delivers energy continuously for the entire treatment time?

Which ultrasound mode delivers energy continuously for the entire treatment time?

• A. Pulsed ultrasound
• B. Continuous ultrasound
• C. Stochastic ultrasound
• D. Intermittent ultrasound

Answer: (B)

Delivery of energy over time is defined by the duty cycle. In continuous ultrasound, the energy is on for the entire treatment duration, giving a 100% duty cycle. This means tissue receives a constant wave throughout the session, leading to steady heating or continuous mechanical interaction depending on settings. Pulsed ultrasound alternates on and off, reducing the average energy delivered and allowing cooling between bursts, which is useful when you want non-thermal effects or to limit heating. Intermittent and stochastic modes aren’t established for delivering continuous energy; they imply cycles with breaks or nonstandard patterns. Therefore, the mode that delivers energy continuously for the whole treatment is continuous ultrasound.

Delivery of energy over time is defined by the duty cycle. In continuous ultrasound, the energy is on for the entire treatment duration, giving a 100% duty cycle. This means tissue receives a constant wave throughout the session, leading to steady heating or continuous mechanical interaction depending on settings. Pulsed ultrasound alternates on and off, reducing the average energy delivered and allowing cooling between bursts, which is useful when you want non-thermal effects or to limit heating. Intermittent and stochastic modes aren’t established for delivering continuous energy; they imply cycles with breaks or nonstandard patterns. Therefore, the mode that delivers energy continuously for the whole treatment is continuous ultrasound.