Standing waves in ultrasound therapy are associated with:

Standing waves in ultrasound therapy are associated with:

• A. Increase in energy intensity and pressure
• B. Decreased energy transmission
• C. Tissue cooling
• D. No significant effect

Answer: (A)

Standing waves occur when the ultrasound wave reflects off a boundary and interferes with the incoming wave, creating a pattern of nodes and antinodes. At an antinode, the acoustic pressure and energy density are higher, so the local energy intensity increases beyond the incident wave. In therapeutic contexts, this means certain regions can experience greater energy delivery and heating, along with stronger mechanical effects. Because of this, standing waves are best described by an increase in energy intensity and pressure. They don’t inherently imply a general drop in transmission, tissue cooling, or no effect.

Standing waves occur when the ultrasound wave reflects off a boundary and interferes with the incoming wave, creating a pattern of nodes and antinodes. At an antinode, the acoustic pressure and energy density are higher, so the local energy intensity increases beyond the incident wave. In therapeutic contexts, this means certain regions can experience greater energy delivery and heating, along with stronger mechanical effects. Because of this, standing waves are best described by an increase in energy intensity and pressure. They don’t inherently imply a general drop in transmission, tissue cooling, or no effect.