Which term is another name for frame averaging in real-time ultrasound?

Which term is another name for frame averaging in real-time ultrasound?

• A. Frame averaging
• B. Persistence
• C. Read-zoom
• D. Spatial compounding

Answer: (B)

Temporal averaging of consecutive frames smooths the ultrasound image by blending what the system sees over time. This approach is described as persistence, because the display keeps data from earlier frames around long enough to mix with newer information. The result is less speckle and a more uniform look, though moving structures may blur if persistence is high. Read-zoom is simply enlarging the image digitally and does not involve averaging frames. Spatial compounding combines data from multiple angles to improve contrast and resolution, which is a spatial rather than temporal technique. So, persistence is the term used for frame averaging in real-time ultrasound.

Temporal averaging of consecutive frames smooths the ultrasound image by blending what the system sees over time. This approach is described as persistence, because the display keeps data from earlier frames around long enough to mix with newer information. The result is less speckle and a more uniform look, though moving structures may blur if persistence is high. Read-zoom is simply enlarging the image digitally and does not involve averaging frames. Spatial compounding combines data from multiple angles to improve contrast and resolution, which is a spatial rather than temporal technique. So, persistence is the term used for frame averaging in real-time ultrasound.