What can you do to achieve a higher frame rate?

What can you do to achieve a higher frame rate?

• A. Decrease the number of focal zones
• B. Decrease the line density
• C. Decrease the sector width
• D. All of the above

Answer: (D)

Frame rate is how many frames per second the ultrasound machine can display, and it depends on how much data must be collected for each frame. Each frame takes time to acquire, and anything that adds extra data or extra focusing steps slows that process. Reducing the number of focal zones cuts the amount of depth-specific focusing the system has to perform, speeding up each line. Lowering line density means fewer scan lines are needed to cover the same image area, so the frame is built faster. Narrowing the sector width reduces the angular sweep, so fewer rays are scanned per frame, also cutting acquisition time. Taken together, these adjustments reduce the work required per frame, allowing a higher frame rate. Of course, these changes can trade off image quality or field of view, but they directly increase frame rate, so all of the above together yields the highest frame rate.

Frame rate is how many frames per second the ultrasound machine can display, and it depends on how much data must be collected for each frame. Each frame takes time to acquire, and anything that adds extra data or extra focusing steps slows that process. Reducing the number of focal zones cuts the amount of depth-specific focusing the system has to perform, speeding up each line. Lowering line density means fewer scan lines are needed to cover the same image area, so the frame is built faster. Narrowing the sector width reduces the angular sweep, so fewer rays are scanned per frame, also cutting acquisition time. Taken together, these adjustments reduce the work required per frame, allowing a higher frame rate. Of course, these changes can trade off image quality or field of view, but they directly increase frame rate, so all of the above together yields the highest frame rate.