Which parameter relates to tissue heating?

Which parameter relates to tissue heating?

• A. Attenuation
• B. Absorption
• C. Scattering
• D. Reflection

Answer: (B)

Tissue heating comes from energy that is absorbed by the tissue. When ultrasound energy is absorbed, it is converted into heat, and the amount of heat generated depends on how much energy the tissue absorbs per unit length—the absorption coefficient. Attenuation describes the overall loss of beam intensity due to both absorption and scattering, but heating is specifically tied to absorption, not scattering or reflection. Scattering and reflection mainly redirect energy rather than convert it into heat. So the parameter that directly relates to tissue heating is absorption because it quantifies the portion of energy turned into heat inside the tissue.

Tissue heating comes from energy that is absorbed by the tissue. When ultrasound energy is absorbed, it is converted into heat, and the amount of heat generated depends on how much energy the tissue absorbs per unit length—the absorption coefficient. Attenuation describes the overall loss of beam intensity due to both absorption and scattering, but heating is specifically tied to absorption, not scattering or reflection. Scattering and reflection mainly redirect energy rather than convert it into heat. So the parameter that directly relates to tissue heating is absorption because it quantifies the portion of energy turned into heat inside the tissue.